❓ A WA parliamentary question on notice regarding wastewater discharge into the Avon River, seeking clarification on definitions, content, safety, and monitoring practices related to wastewater and effluent from the Northam wastewater treatment plant.
AnsweredQoN 1234Legislative Assembly
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(b) will the Minister clearly define the differences between the technical definitions of- (i) ‘waste-water’, treated or otherwise; and (ii) ‘effluent’, treated or otherwise (that has a clear dictionary definition that includes discharged sewerage waste); (c) does ‘waste-water’ contain ‘effluent’; (d) does ‘effluent’ contain human waste such as faecal matter, urine, all other body fluids, and hair and skin in various stages of decomposition; (e) does Northam's ‘waste-water’, regularly dumped by the Water Corporation in the Avon River, contain ‘effluent’; (f) will the Minister provide accurate information regarding - (i) the metric volume of ‘waste-water’ dumped in the Avon River each year; (ii) exactly where it is dumped, by whom, and who oversees this; and (iii) how many dumping sites there are; (g) will the Minister advise what ‘effluent’, including human waste, and other toxic, harmful and biologically undesirable waste and contaminants, is contained within this ‘waste-water’ - (i) prior to its treatment; (ii) after its treatment; and (iii) when dumped in the Avon River; (h) will the Minister advise what percentage ‘effluent’, including human waste, and other toxic, harmful and biologically undesirable waste and contaminants, is contained within this ‘waste-water’ - (i) prior to its treatment; (ii) after its treatment; and (iii) when dumped in the Avon River; (i) will the Minister advise what actual chemical elements, singularly and in combination, are contained in this ‘waste-water’ - (i) prior to its treatment; (ii) after its treatment; and (iii) when dumped in the Avon River: (j) will the Minister advise what facts show that this ‘waste-water’ is not hazardous to human health; (k) will the Minister advise what facts show that this ‘waste-water’ is not hazardous to the bio-diverse eco-systems, including all species of flora and fauna, within or in close proximity to the Avon River; (l) will the Minister advise what facts show that this ‘waste-water’ has no negative impacts to the bio-diverse ecosystems on the lower reaches of the Avon River and the upper reaches of the Swan River; (m) will the Minister advise of the last time the Avon River was tested for ‘waste-water’ contamination and what the result was; (n) will the Minister advise of the last time the Avon River was tested for any form of contamination and what the result was; (o) is the dumping of ‘waste-water’ in the Avon River, in the 21st Century, an acceptable, hygienic and totally safe practise; and (p) will the Minister swim at the location/s where ‘waste-water’ is dumped in the Avon River; and (i) if not, why not?
(ii) ‘effluent’, treated or otherwise (that has a clear dictionary definition that includes discharged sewerage waste);
(d) does ‘effluent’ contain human waste such as faecal matter, urine, all other body fluids, and hair and skin in various stages of decomposition; (e) does Northam's ‘waste-water’, regularly dumped by the Water Corporation in the Avon River, contain ‘effluent’; (f) will the Minister provide accurate information regarding - (i) the metric volume of ‘waste-water’ dumped in the Avon River each year; (ii) exactly where it is dumped, by whom, and who oversees this; and (iii) how many dumping sites there are; (g) will the Minister advise what ‘effluent’, including human waste, and other toxic, harmful and biologically undesirable waste and contaminants, is contained within this ‘waste-water’ - (i) prior to its treatment; (ii) after its treatment; and (iii) when dumped in the Avon River; (h) will the Minister advise what percentage ‘effluent’, including human waste, and other toxic, harmful and biologically undesirable waste and contaminants, is contained within this ‘waste-water’ - (i) prior to its treatment; (ii) after its treatment; and (iii) when dumped in the Avon River; (i) will the Minister advise what actual chemical elements, singularly and in combination, are contained in this ‘waste-water’ - (i) prior to its treatment; (ii) after its treatment; and (iii) when dumped in the Avon River: (j) will the Minister advise what facts show that this ‘waste-water’ is not hazardous to human health; (k) will the Minister advise what facts show that this ‘waste-water’ is not hazardous to the bio-diverse eco-systems, including all species of flora and fauna, within or in close proximity to the Avon River; (l) will the Minister advise what facts show that this ‘waste-water’ has no negative impacts to the bio-diverse ecosystems on the lower reaches of the Avon River and the upper reaches of the Swan River; (m) will the Minister advise of the last time the Avon River was tested for ‘waste-water’ contamination and what the result was; (n) will the Minister advise of the last time the Avon River was tested for any form of contamination and what the result was; (o) is the dumping of ‘waste-water’ in the Avon River, in the 21st Century, an acceptable, hygienic and totally safe practise; and (p) will the Minister swim at the location/s where ‘waste-water’ is dumped in the Avon River; and (i) if not, why not?
(e) does Northam's ‘waste-water’, regularly dumped by the Water Corporation in the Avon River, contain ‘effluent’; (f) will the Minister provide accurate information regarding - (i) the metric volume of ‘waste-water’ dumped in the Avon River each year; (ii) exactly where it is dumped, by whom, and who oversees this; and (iii) how many dumping sites there are; (g) will the Minister advise what ‘effluent’, including human waste, and other toxic, harmful and biologically undesirable waste and contaminants, is contained within this ‘waste-water’ - (i) prior to its treatment; (ii) after its treatment; and (iii) when dumped in the Avon River; (h) will the Minister advise what percentage ‘effluent’, including human waste, and other toxic, harmful and biologically undesirable waste and contaminants, is contained within this ‘waste-water’ - (i) prior to its treatment; (ii) after its treatment; and (iii) when dumped in the Avon River; (i) will the Minister advise what actual chemical elements, singularly and in combination, are contained in this ‘waste-water’ - (i) prior to its treatment; (ii) after its treatment; and (iii) when dumped in the Avon River: (j) will the Minister advise what facts show that this ‘waste-water’ is not hazardous to human health; (k) will the Minister advise what facts show that this ‘waste-water’ is not hazardous to the bio-diverse eco-systems, including all species of flora and fauna, within or in close proximity to the Avon River; (l) will the Minister advise what facts show that this ‘waste-water’ has no negative impacts to the bio-diverse ecosystems on the lower reaches of the Avon River and the upper reaches of the Swan River; (m) will the Minister advise of the last time the Avon River was tested for ‘waste-water’ contamination and what the result was; (n) will the Minister advise of the last time the Avon River was tested for any form of contamination and what the result was; (o) is the dumping of ‘waste-water’ in the Avon River, in the 21st Century, an acceptable, hygienic and totally safe practise; and (p) will the Minister swim at the location/s where ‘waste-water’ is dumped in the Avon River; and (i) if not, why not?
(f) will the Minister provide accurate information regarding - (i) the metric volume of ‘waste-water’ dumped in the Avon River each year; (ii) exactly where it is dumped, by whom, and who oversees this; and (iii) how many dumping sites there are; (g) will the Minister advise what ‘effluent’, including human waste, and other toxic, harmful and biologically undesirable waste and contaminants, is contained within this ‘waste-water’ - (i) prior to its treatment; (ii) after its treatment; and (iii) when dumped in the Avon River; (h) will the Minister advise what percentage ‘effluent’, including human waste, and other toxic, harmful and biologically undesirable waste and contaminants, is contained within this ‘waste-water’ - (i) prior to its treatment; (ii) after its treatment; and (iii) when dumped in the Avon River; (i) will the Minister advise what actual chemical elements, singularly and in combination, are contained in this ‘waste-water’ - (i) prior to its treatment; (ii) after its treatment; and (iii) when dumped in the Avon River: (j) will the Minister advise what facts show that this ‘waste-water’ is not hazardous to human health; (k) will the Minister advise what facts show that this ‘waste-water’ is not hazardous to the bio-diverse eco-systems, including all species of flora and fauna, within or in close proximity to the Avon River; (l) will the Minister advise what facts show that this ‘waste-water’ has no negative impacts to the bio-diverse ecosystems on the lower reaches of the Avon River and the upper reaches of the Swan River; (m) will the Minister advise of the last time the Avon River was tested for ‘waste-water’ contamination and what the result was; (n) will the Minister advise of the last time the Avon River was tested for any form of contamination and what the result was; (o) is the dumping of ‘waste-water’ in the Avon River, in the 21st Century, an acceptable, hygienic and totally safe practise; and (p) will the Minister swim at the location/s where ‘waste-water’ is dumped in the Avon River; and (i) if not, why not?
(ii) exactly where it is dumped, by whom, and who oversees this; and (iii) how many dumping sites there are;
(iii) how many dumping sites there are;
(ii) after its treatment; and (iii) when dumped in the Avon River;
(iii) when dumped in the Avon River;
(ii) after its treatment; and (iii) when dumped in the Avon River;
(iii) when dumped in the Avon River;
(ii) after its treatment; and (iii) when dumped in the Avon River:
(iii) when dumped in the Avon River:
(k) will the Minister advise what facts show that this ‘waste-water’ is not hazardous to the bio-diverse eco-systems, including all species of flora and fauna, within or in close proximity to the Avon River; (l) will the Minister advise what facts show that this ‘waste-water’ has no negative impacts to the bio-diverse ecosystems on the lower reaches of the Avon River and the upper reaches of the Swan River; (m) will the Minister advise of the last time the Avon River was tested for ‘waste-water’ contamination and what the result was; (n) will the Minister advise of the last time the Avon River was tested for any form of contamination and what the result was; (o) is the dumping of ‘waste-water’ in the Avon River, in the 21st Century, an acceptable, hygienic and totally safe practise; and (p) will the Minister swim at the location/s where ‘waste-water’ is dumped in the Avon River; and (i) if not, why not?
(l) will the Minister advise what facts show that this ‘waste-water’ has no negative impacts to the bio-diverse ecosystems on the lower reaches of the Avon River and the upper reaches of the Swan River; (m) will the Minister advise of the last time the Avon River was tested for ‘waste-water’ contamination and what the result was; (n) will the Minister advise of the last time the Avon River was tested for any form of contamination and what the result was; (o) is the dumping of ‘waste-water’ in the Avon River, in the 21st Century, an acceptable, hygienic and totally safe practise; and (p) will the Minister swim at the location/s where ‘waste-water’ is dumped in the Avon River; and (i) if not, why not?
(m) will the Minister advise of the last time the Avon River was tested for ‘waste-water’ contamination and what the result was; (n) will the Minister advise of the last time the Avon River was tested for any form of contamination and what the result was; (o) is the dumping of ‘waste-water’ in the Avon River, in the 21st Century, an acceptable, hygienic and totally safe practise; and (p) will the Minister swim at the location/s where ‘waste-water’ is dumped in the Avon River; and (i) if not, why not?
(n) will the Minister advise of the last time the Avon River was tested for any form of contamination and what the result was; (o) is the dumping of ‘waste-water’ in the Avon River, in the 21st Century, an acceptable, hygienic and totally safe practise; and (p) will the Minister swim at the location/s where ‘waste-water’ is dumped in the Avon River; and (i) if not, why not?
(o) is the dumping of ‘waste-water’ in the Avon River, in the 21st Century, an acceptable, hygienic and totally safe practise; and (p) will the Minister swim at the location/s where ‘waste-water’ is dumped in the Avon River; and (i) if not, why not?
(p) will the Minister swim at the location/s where ‘waste-water’ is dumped in the Avon River; and (i) if not, why not?
(b)(i) Wastewater: from the community, includes wastes generated from both domestic and commercial/industrial sources. Untreated wastewater: from the community, includes wastes generated from both domestic and commercial/industrial sources before treatment. Treated wastewater: from the community, includes wastes generated from both domestic and commercial/industrial sources after treatment. (ii) Effluent is an alternative term for treated wastewater and is generally used to describe a liquid discharge from an industrial plant or wastewater treatment plant. (c) Yes. (d) No. Effluent (treated wastewater) has had these contaminants removed to a substantial degree through the treatment processes (e) The wastewater from the town of Northam is of largely domestic origin (eg from the kitchen, laundry, toilet and bathroom areas of households). A small quantity comes from commercial premises such as food outlets. All raw wastewater undergoes secondary treatment, followed by further treatment to reduce phosphorus concentrations, prior to discharge (of treated wastewater) into the Avon River. Additional treatment by disinfection is scheduled for the year 2007. (f)(i) In 2004/05, 216 000 cubic metres of treated wastewater was discharged to the Avon River. (ii) There is one discharge site, downstream from the Avon Weir (3.57 kilometres following the flow of the river). These activities are overseen by the Department of Environment and Conservation, which issues the Water Corporation with a licence governing the discharge. The Water Corporation complies with all conditions of this licence. (iii) One. (g) Untreated wastewater contains suspended solids, nutrients and bacteria. The purpose of the treatment is to reduce the concentrations of these contaminants to an acceptable level. (i) Contaminants prior to treatment are: Suspended Solids: 200 - 300 mg/L Biochemical Oxygen Demand: 200 - 300 mg/L Total Nitrogen: 40 - 100 mg/L Total Phosphorus: 7 - 14 mg/L Bacteria: 10 000 000 cfu/100 mL pH: 7 - 8 (ii) - (iii) Contaminants after treatment (ie prior to discharge into Avon River) are: Suspended Solids: 5 - 70 mg/L Biochemical Oxygen Demand: less than 30 mg/L Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
Untreated wastewater: from the community, includes wastes generated from both domestic and commercial/industrial sources before treatment. Treated wastewater: from the community, includes wastes generated from both domestic and commercial/industrial sources after treatment. (ii) Effluent is an alternative term for treated wastewater and is generally used to describe a liquid discharge from an industrial plant or wastewater treatment plant. (c) Yes. (d) No. Effluent (treated wastewater) has had these contaminants removed to a substantial degree through the treatment processes (e) The wastewater from the town of Northam is of largely domestic origin (eg from the kitchen, laundry, toilet and bathroom areas of households). A small quantity comes from commercial premises such as food outlets. All raw wastewater undergoes secondary treatment, followed by further treatment to reduce phosphorus concentrations, prior to discharge (of treated wastewater) into the Avon River. Additional treatment by disinfection is scheduled for the year 2007. (f)(i) In 2004/05, 216 000 cubic metres of treated wastewater was discharged to the Avon River. (ii) There is one discharge site, downstream from the Avon Weir (3.57 kilometres following the flow of the river). These activities are overseen by the Department of Environment and Conservation, which issues the Water Corporation with a licence governing the discharge. The Water Corporation complies with all conditions of this licence. (iii) One. (g) Untreated wastewater contains suspended solids, nutrients and bacteria. The purpose of the treatment is to reduce the concentrations of these contaminants to an acceptable level. (i) Contaminants prior to treatment are: Suspended Solids: 200 - 300 mg/L Biochemical Oxygen Demand: 200 - 300 mg/L Total Nitrogen: 40 - 100 mg/L Total Phosphorus: 7 - 14 mg/L Bacteria: 10 000 000 cfu/100 mL pH: 7 - 8 (ii) - (iii) Contaminants after treatment (ie prior to discharge into Avon River) are: Suspended Solids: 5 - 70 mg/L Biochemical Oxygen Demand: less than 30 mg/L Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
Treated wastewater: from the community, includes wastes generated from both domestic and commercial/industrial sources after treatment. (ii) Effluent is an alternative term for treated wastewater and is generally used to describe a liquid discharge from an industrial plant or wastewater treatment plant. (c) Yes. (d) No. Effluent (treated wastewater) has had these contaminants removed to a substantial degree through the treatment processes (e) The wastewater from the town of Northam is of largely domestic origin (eg from the kitchen, laundry, toilet and bathroom areas of households). A small quantity comes from commercial premises such as food outlets. All raw wastewater undergoes secondary treatment, followed by further treatment to reduce phosphorus concentrations, prior to discharge (of treated wastewater) into the Avon River. Additional treatment by disinfection is scheduled for the year 2007. (f)(i) In 2004/05, 216 000 cubic metres of treated wastewater was discharged to the Avon River. (ii) There is one discharge site, downstream from the Avon Weir (3.57 kilometres following the flow of the river). These activities are overseen by the Department of Environment and Conservation, which issues the Water Corporation with a licence governing the discharge. The Water Corporation complies with all conditions of this licence. (iii) One. (g) Untreated wastewater contains suspended solids, nutrients and bacteria. The purpose of the treatment is to reduce the concentrations of these contaminants to an acceptable level. (i) Contaminants prior to treatment are: Suspended Solids: 200 - 300 mg/L Biochemical Oxygen Demand: 200 - 300 mg/L Total Nitrogen: 40 - 100 mg/L Total Phosphorus: 7 - 14 mg/L Bacteria: 10 000 000 cfu/100 mL pH: 7 - 8 (ii) - (iii) Contaminants after treatment (ie prior to discharge into Avon River) are: Suspended Solids: 5 - 70 mg/L Biochemical Oxygen Demand: less than 30 mg/L Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
(ii) Effluent is an alternative term for treated wastewater and is generally used to describe a liquid discharge from an industrial plant or wastewater treatment plant. (c) Yes. (d) No. Effluent (treated wastewater) has had these contaminants removed to a substantial degree through the treatment processes (e) The wastewater from the town of Northam is of largely domestic origin (eg from the kitchen, laundry, toilet and bathroom areas of households). A small quantity comes from commercial premises such as food outlets. All raw wastewater undergoes secondary treatment, followed by further treatment to reduce phosphorus concentrations, prior to discharge (of treated wastewater) into the Avon River. Additional treatment by disinfection is scheduled for the year 2007. (f)(i) In 2004/05, 216 000 cubic metres of treated wastewater was discharged to the Avon River. (ii) There is one discharge site, downstream from the Avon Weir (3.57 kilometres following the flow of the river). These activities are overseen by the Department of Environment and Conservation, which issues the Water Corporation with a licence governing the discharge. The Water Corporation complies with all conditions of this licence. (iii) One. (g) Untreated wastewater contains suspended solids, nutrients and bacteria. The purpose of the treatment is to reduce the concentrations of these contaminants to an acceptable level. (i) Contaminants prior to treatment are: Suspended Solids: 200 - 300 mg/L Biochemical Oxygen Demand: 200 - 300 mg/L Total Nitrogen: 40 - 100 mg/L Total Phosphorus: 7 - 14 mg/L Bacteria: 10 000 000 cfu/100 mL pH: 7 - 8 (ii) - (iii) Contaminants after treatment (ie prior to discharge into Avon River) are: Suspended Solids: 5 - 70 mg/L Biochemical Oxygen Demand: less than 30 mg/L Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
(c) Yes. (d) No. Effluent (treated wastewater) has had these contaminants removed to a substantial degree through the treatment processes (e) The wastewater from the town of Northam is of largely domestic origin (eg from the kitchen, laundry, toilet and bathroom areas of households). A small quantity comes from commercial premises such as food outlets. All raw wastewater undergoes secondary treatment, followed by further treatment to reduce phosphorus concentrations, prior to discharge (of treated wastewater) into the Avon River. Additional treatment by disinfection is scheduled for the year 2007. (f)(i) In 2004/05, 216 000 cubic metres of treated wastewater was discharged to the Avon River. (ii) There is one discharge site, downstream from the Avon Weir (3.57 kilometres following the flow of the river). These activities are overseen by the Department of Environment and Conservation, which issues the Water Corporation with a licence governing the discharge. The Water Corporation complies with all conditions of this licence. (iii) One. (g) Untreated wastewater contains suspended solids, nutrients and bacteria. The purpose of the treatment is to reduce the concentrations of these contaminants to an acceptable level. (i) Contaminants prior to treatment are: Suspended Solids: 200 - 300 mg/L Biochemical Oxygen Demand: 200 - 300 mg/L Total Nitrogen: 40 - 100 mg/L Total Phosphorus: 7 - 14 mg/L Bacteria: 10 000 000 cfu/100 mL pH: 7 - 8 (ii) - (iii) Contaminants after treatment (ie prior to discharge into Avon River) are: Suspended Solids: 5 - 70 mg/L Biochemical Oxygen Demand: less than 30 mg/L Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
(d) No. Effluent (treated wastewater) has had these contaminants removed to a substantial degree through the treatment processes (e) The wastewater from the town of Northam is of largely domestic origin (eg from the kitchen, laundry, toilet and bathroom areas of households). A small quantity comes from commercial premises such as food outlets. All raw wastewater undergoes secondary treatment, followed by further treatment to reduce phosphorus concentrations, prior to discharge (of treated wastewater) into the Avon River. Additional treatment by disinfection is scheduled for the year 2007. (f)(i) In 2004/05, 216 000 cubic metres of treated wastewater was discharged to the Avon River. (ii) There is one discharge site, downstream from the Avon Weir (3.57 kilometres following the flow of the river). These activities are overseen by the Department of Environment and Conservation, which issues the Water Corporation with a licence governing the discharge. The Water Corporation complies with all conditions of this licence. (iii) One. (g) Untreated wastewater contains suspended solids, nutrients and bacteria. The purpose of the treatment is to reduce the concentrations of these contaminants to an acceptable level. (i) Contaminants prior to treatment are: Suspended Solids: 200 - 300 mg/L Biochemical Oxygen Demand: 200 - 300 mg/L Total Nitrogen: 40 - 100 mg/L Total Phosphorus: 7 - 14 mg/L Bacteria: 10 000 000 cfu/100 mL pH: 7 - 8 (ii) - (iii) Contaminants after treatment (ie prior to discharge into Avon River) are: Suspended Solids: 5 - 70 mg/L Biochemical Oxygen Demand: less than 30 mg/L Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
(e) The wastewater from the town of Northam is of largely domestic origin (eg from the kitchen, laundry, toilet and bathroom areas of households). A small quantity comes from commercial premises such as food outlets. All raw wastewater undergoes secondary treatment, followed by further treatment to reduce phosphorus concentrations, prior to discharge (of treated wastewater) into the Avon River. Additional treatment by disinfection is scheduled for the year 2007. (f)(i) In 2004/05, 216 000 cubic metres of treated wastewater was discharged to the Avon River. (ii) There is one discharge site, downstream from the Avon Weir (3.57 kilometres following the flow of the river). These activities are overseen by the Department of Environment and Conservation, which issues the Water Corporation with a licence governing the discharge. The Water Corporation complies with all conditions of this licence. (iii) One. (g) Untreated wastewater contains suspended solids, nutrients and bacteria. The purpose of the treatment is to reduce the concentrations of these contaminants to an acceptable level. (i) Contaminants prior to treatment are: Suspended Solids: 200 - 300 mg/L Biochemical Oxygen Demand: 200 - 300 mg/L Total Nitrogen: 40 - 100 mg/L Total Phosphorus: 7 - 14 mg/L Bacteria: 10 000 000 cfu/100 mL pH: 7 - 8 (ii) - (iii) Contaminants after treatment (ie prior to discharge into Avon River) are: Suspended Solids: 5 - 70 mg/L Biochemical Oxygen Demand: less than 30 mg/L Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
Additional treatment by disinfection is scheduled for the year 2007. (f)(i) In 2004/05, 216 000 cubic metres of treated wastewater was discharged to the Avon River. (ii) There is one discharge site, downstream from the Avon Weir (3.57 kilometres following the flow of the river). These activities are overseen by the Department of Environment and Conservation, which issues the Water Corporation with a licence governing the discharge. The Water Corporation complies with all conditions of this licence. (iii) One. (g) Untreated wastewater contains suspended solids, nutrients and bacteria. The purpose of the treatment is to reduce the concentrations of these contaminants to an acceptable level. (i) Contaminants prior to treatment are: Suspended Solids: 200 - 300 mg/L Biochemical Oxygen Demand: 200 - 300 mg/L Total Nitrogen: 40 - 100 mg/L Total Phosphorus: 7 - 14 mg/L Bacteria: 10 000 000 cfu/100 mL pH: 7 - 8 (ii) - (iii) Contaminants after treatment (ie prior to discharge into Avon River) are: Suspended Solids: 5 - 70 mg/L Biochemical Oxygen Demand: less than 30 mg/L Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
(f)(i) In 2004/05, 216 000 cubic metres of treated wastewater was discharged to the Avon River. (ii) There is one discharge site, downstream from the Avon Weir (3.57 kilometres following the flow of the river). These activities are overseen by the Department of Environment and Conservation, which issues the Water Corporation with a licence governing the discharge. The Water Corporation complies with all conditions of this licence. (iii) One. (g) Untreated wastewater contains suspended solids, nutrients and bacteria. The purpose of the treatment is to reduce the concentrations of these contaminants to an acceptable level. (i) Contaminants prior to treatment are: Suspended Solids: 200 - 300 mg/L Biochemical Oxygen Demand: 200 - 300 mg/L Total Nitrogen: 40 - 100 mg/L Total Phosphorus: 7 - 14 mg/L Bacteria: 10 000 000 cfu/100 mL pH: 7 - 8 (ii) - (iii) Contaminants after treatment (ie prior to discharge into Avon River) are: Suspended Solids: 5 - 70 mg/L Biochemical Oxygen Demand: less than 30 mg/L Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
(ii) There is one discharge site, downstream from the Avon Weir (3.57 kilometres following the flow of the river). These activities are overseen by the Department of Environment and Conservation, which issues the Water Corporation with a licence governing the discharge. The Water Corporation complies with all conditions of this licence. (iii) One. (g) Untreated wastewater contains suspended solids, nutrients and bacteria. The purpose of the treatment is to reduce the concentrations of these contaminants to an acceptable level. (i) Contaminants prior to treatment are: Suspended Solids: 200 - 300 mg/L Biochemical Oxygen Demand: 200 - 300 mg/L Total Nitrogen: 40 - 100 mg/L Total Phosphorus: 7 - 14 mg/L Bacteria: 10 000 000 cfu/100 mL pH: 7 - 8 (ii) - (iii) Contaminants after treatment (ie prior to discharge into Avon River) are: Suspended Solids: 5 - 70 mg/L Biochemical Oxygen Demand: less than 30 mg/L Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
(iii) One. (g) Untreated wastewater contains suspended solids, nutrients and bacteria. The purpose of the treatment is to reduce the concentrations of these contaminants to an acceptable level. (i) Contaminants prior to treatment are: Suspended Solids: 200 - 300 mg/L Biochemical Oxygen Demand: 200 - 300 mg/L Total Nitrogen: 40 - 100 mg/L Total Phosphorus: 7 - 14 mg/L Bacteria: 10 000 000 cfu/100 mL pH: 7 - 8 (ii) - (iii) Contaminants after treatment (ie prior to discharge into Avon River) are: Suspended Solids: 5 - 70 mg/L Biochemical Oxygen Demand: less than 30 mg/L Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
(g) Untreated wastewater contains suspended solids, nutrients and bacteria. The purpose of the treatment is to reduce the concentrations of these contaminants to an acceptable level. (i) Contaminants prior to treatment are: Suspended Solids: 200 - 300 mg/L Biochemical Oxygen Demand: 200 - 300 mg/L Total Nitrogen: 40 - 100 mg/L Total Phosphorus: 7 - 14 mg/L Bacteria: 10 000 000 cfu/100 mL pH: 7 - 8 (ii) - (iii) Contaminants after treatment (ie prior to discharge into Avon River) are: Suspended Solids: 5 - 70 mg/L Biochemical Oxygen Demand: less than 30 mg/L Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
(i) Contaminants prior to treatment are: Suspended Solids: 200 - 300 mg/L Biochemical Oxygen Demand: 200 - 300 mg/L Total Nitrogen: 40 - 100 mg/L Total Phosphorus: 7 - 14 mg/L Bacteria: 10 000 000 cfu/100 mL pH: 7 - 8 (ii) - (iii) Contaminants after treatment (ie prior to discharge into Avon River) are: Suspended Solids: 5 - 70 mg/L Biochemical Oxygen Demand: less than 30 mg/L Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
Suspended Solids: 200 - 300 mg/L Biochemical Oxygen Demand: 200 - 300 mg/L Total Nitrogen: 40 - 100 mg/L Total Phosphorus: 7 - 14 mg/L Bacteria: 10 000 000 cfu/100 mL pH: 7 - 8 (ii) - (iii) Contaminants after treatment (ie prior to discharge into Avon River) are: Suspended Solids: 5 - 70 mg/L Biochemical Oxygen Demand: less than 30 mg/L Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
Biochemical Oxygen Demand: 200 - 300 mg/L Total Nitrogen: 40 - 100 mg/L Total Phosphorus: 7 - 14 mg/L Bacteria: 10 000 000 cfu/100 mL pH: 7 - 8 (ii) - (iii) Contaminants after treatment (ie prior to discharge into Avon River) are: Suspended Solids: 5 - 70 mg/L Biochemical Oxygen Demand: less than 30 mg/L Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
Total Nitrogen: 40 - 100 mg/L Total Phosphorus: 7 - 14 mg/L Bacteria: 10 000 000 cfu/100 mL pH: 7 - 8 (ii) - (iii) Contaminants after treatment (ie prior to discharge into Avon River) are: Suspended Solids: 5 - 70 mg/L Biochemical Oxygen Demand: less than 30 mg/L Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
Total Phosphorus: 7 - 14 mg/L Bacteria: 10 000 000 cfu/100 mL pH: 7 - 8 (ii) - (iii) Contaminants after treatment (ie prior to discharge into Avon River) are: Suspended Solids: 5 - 70 mg/L Biochemical Oxygen Demand: less than 30 mg/L Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
Bacteria: 10 000 000 cfu/100 mL pH: 7 - 8 (ii) - (iii) Contaminants after treatment (ie prior to discharge into Avon River) are: Suspended Solids: 5 - 70 mg/L Biochemical Oxygen Demand: less than 30 mg/L Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
pH: 7 - 8 (ii) - (iii) Contaminants after treatment (ie prior to discharge into Avon River) are: Suspended Solids: 5 - 70 mg/L Biochemical Oxygen Demand: less than 30 mg/L Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
(ii) - (iii) Contaminants after treatment (ie prior to discharge into Avon River) are: Suspended Solids: 5 - 70 mg/L Biochemical Oxygen Demand: less than 30 mg/L Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
Suspended Solids: 5 - 70 mg/L Biochemical Oxygen Demand: less than 30 mg/L Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
Biochemical Oxygen Demand: less than 30 mg/L Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
(h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
(j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
· Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
· Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
(k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
(l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
(m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
(n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
(o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
(p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
(ii) ‘effluent’, treated or otherwise (that has a clear dictionary definition that includes discharged sewerage waste);
(d) does ‘effluent’ contain human waste such as faecal matter, urine, all other body fluids, and hair and skin in various stages of decomposition; (e) does Northam's ‘waste-water’, regularly dumped by the Water Corporation in the Avon River, contain ‘effluent’; (f) will the Minister provide accurate information regarding - (i) the metric volume of ‘waste-water’ dumped in the Avon River each year; (ii) exactly where it is dumped, by whom, and who oversees this; and (iii) how many dumping sites there are; (g) will the Minister advise what ‘effluent’, including human waste, and other toxic, harmful and biologically undesirable waste and contaminants, is contained within this ‘waste-water’ - (i) prior to its treatment; (ii) after its treatment; and (iii) when dumped in the Avon River; (h) will the Minister advise what percentage ‘effluent’, including human waste, and other toxic, harmful and biologically undesirable waste and contaminants, is contained within this ‘waste-water’ - (i) prior to its treatment; (ii) after its treatment; and (iii) when dumped in the Avon River; (i) will the Minister advise what actual chemical elements, singularly and in combination, are contained in this ‘waste-water’ - (i) prior to its treatment; (ii) after its treatment; and (iii) when dumped in the Avon River: (j) will the Minister advise what facts show that this ‘waste-water’ is not hazardous to human health; (k) will the Minister advise what facts show that this ‘waste-water’ is not hazardous to the bio-diverse eco-systems, including all species of flora and fauna, within or in close proximity to the Avon River; (l) will the Minister advise what facts show that this ‘waste-water’ has no negative impacts to the bio-diverse ecosystems on the lower reaches of the Avon River and the upper reaches of the Swan River; (m) will the Minister advise of the last time the Avon River was tested for ‘waste-water’ contamination and what the result was; (n) will the Minister advise of the last time the Avon River was tested for any form of contamination and what the result was; (o) is the dumping of ‘waste-water’ in the Avon River, in the 21st Century, an acceptable, hygienic and totally safe practise; and (p) will the Minister swim at the location/s where ‘waste-water’ is dumped in the Avon River; and (i) if not, why not?
(e) does Northam's ‘waste-water’, regularly dumped by the Water Corporation in the Avon River, contain ‘effluent’; (f) will the Minister provide accurate information regarding - (i) the metric volume of ‘waste-water’ dumped in the Avon River each year; (ii) exactly where it is dumped, by whom, and who oversees this; and (iii) how many dumping sites there are; (g) will the Minister advise what ‘effluent’, including human waste, and other toxic, harmful and biologically undesirable waste and contaminants, is contained within this ‘waste-water’ - (i) prior to its treatment; (ii) after its treatment; and (iii) when dumped in the Avon River; (h) will the Minister advise what percentage ‘effluent’, including human waste, and other toxic, harmful and biologically undesirable waste and contaminants, is contained within this ‘waste-water’ - (i) prior to its treatment; (ii) after its treatment; and (iii) when dumped in the Avon River; (i) will the Minister advise what actual chemical elements, singularly and in combination, are contained in this ‘waste-water’ - (i) prior to its treatment; (ii) after its treatment; and (iii) when dumped in the Avon River: (j) will the Minister advise what facts show that this ‘waste-water’ is not hazardous to human health; (k) will the Minister advise what facts show that this ‘waste-water’ is not hazardous to the bio-diverse eco-systems, including all species of flora and fauna, within or in close proximity to the Avon River; (l) will the Minister advise what facts show that this ‘waste-water’ has no negative impacts to the bio-diverse ecosystems on the lower reaches of the Avon River and the upper reaches of the Swan River; (m) will the Minister advise of the last time the Avon River was tested for ‘waste-water’ contamination and what the result was; (n) will the Minister advise of the last time the Avon River was tested for any form of contamination and what the result was; (o) is the dumping of ‘waste-water’ in the Avon River, in the 21st Century, an acceptable, hygienic and totally safe practise; and (p) will the Minister swim at the location/s where ‘waste-water’ is dumped in the Avon River; and (i) if not, why not?
(f) will the Minister provide accurate information regarding - (i) the metric volume of ‘waste-water’ dumped in the Avon River each year; (ii) exactly where it is dumped, by whom, and who oversees this; and (iii) how many dumping sites there are; (g) will the Minister advise what ‘effluent’, including human waste, and other toxic, harmful and biologically undesirable waste and contaminants, is contained within this ‘waste-water’ - (i) prior to its treatment; (ii) after its treatment; and (iii) when dumped in the Avon River; (h) will the Minister advise what percentage ‘effluent’, including human waste, and other toxic, harmful and biologically undesirable waste and contaminants, is contained within this ‘waste-water’ - (i) prior to its treatment; (ii) after its treatment; and (iii) when dumped in the Avon River; (i) will the Minister advise what actual chemical elements, singularly and in combination, are contained in this ‘waste-water’ - (i) prior to its treatment; (ii) after its treatment; and (iii) when dumped in the Avon River: (j) will the Minister advise what facts show that this ‘waste-water’ is not hazardous to human health; (k) will the Minister advise what facts show that this ‘waste-water’ is not hazardous to the bio-diverse eco-systems, including all species of flora and fauna, within or in close proximity to the Avon River; (l) will the Minister advise what facts show that this ‘waste-water’ has no negative impacts to the bio-diverse ecosystems on the lower reaches of the Avon River and the upper reaches of the Swan River; (m) will the Minister advise of the last time the Avon River was tested for ‘waste-water’ contamination and what the result was; (n) will the Minister advise of the last time the Avon River was tested for any form of contamination and what the result was; (o) is the dumping of ‘waste-water’ in the Avon River, in the 21st Century, an acceptable, hygienic and totally safe practise; and (p) will the Minister swim at the location/s where ‘waste-water’ is dumped in the Avon River; and (i) if not, why not?
(ii) exactly where it is dumped, by whom, and who oversees this; and (iii) how many dumping sites there are;
(iii) how many dumping sites there are;
(ii) after its treatment; and (iii) when dumped in the Avon River;
(iii) when dumped in the Avon River;
(ii) after its treatment; and (iii) when dumped in the Avon River;
(iii) when dumped in the Avon River;
(ii) after its treatment; and (iii) when dumped in the Avon River:
(iii) when dumped in the Avon River:
(k) will the Minister advise what facts show that this ‘waste-water’ is not hazardous to the bio-diverse eco-systems, including all species of flora and fauna, within or in close proximity to the Avon River; (l) will the Minister advise what facts show that this ‘waste-water’ has no negative impacts to the bio-diverse ecosystems on the lower reaches of the Avon River and the upper reaches of the Swan River; (m) will the Minister advise of the last time the Avon River was tested for ‘waste-water’ contamination and what the result was; (n) will the Minister advise of the last time the Avon River was tested for any form of contamination and what the result was; (o) is the dumping of ‘waste-water’ in the Avon River, in the 21st Century, an acceptable, hygienic and totally safe practise; and (p) will the Minister swim at the location/s where ‘waste-water’ is dumped in the Avon River; and (i) if not, why not?
(l) will the Minister advise what facts show that this ‘waste-water’ has no negative impacts to the bio-diverse ecosystems on the lower reaches of the Avon River and the upper reaches of the Swan River; (m) will the Minister advise of the last time the Avon River was tested for ‘waste-water’ contamination and what the result was; (n) will the Minister advise of the last time the Avon River was tested for any form of contamination and what the result was; (o) is the dumping of ‘waste-water’ in the Avon River, in the 21st Century, an acceptable, hygienic and totally safe practise; and (p) will the Minister swim at the location/s where ‘waste-water’ is dumped in the Avon River; and (i) if not, why not?
(m) will the Minister advise of the last time the Avon River was tested for ‘waste-water’ contamination and what the result was; (n) will the Minister advise of the last time the Avon River was tested for any form of contamination and what the result was; (o) is the dumping of ‘waste-water’ in the Avon River, in the 21st Century, an acceptable, hygienic and totally safe practise; and (p) will the Minister swim at the location/s where ‘waste-water’ is dumped in the Avon River; and (i) if not, why not?
(n) will the Minister advise of the last time the Avon River was tested for any form of contamination and what the result was; (o) is the dumping of ‘waste-water’ in the Avon River, in the 21st Century, an acceptable, hygienic and totally safe practise; and (p) will the Minister swim at the location/s where ‘waste-water’ is dumped in the Avon River; and (i) if not, why not?
(o) is the dumping of ‘waste-water’ in the Avon River, in the 21st Century, an acceptable, hygienic and totally safe practise; and (p) will the Minister swim at the location/s where ‘waste-water’ is dumped in the Avon River; and (i) if not, why not?
(p) will the Minister swim at the location/s where ‘waste-water’ is dumped in the Avon River; and (i) if not, why not?
(b)(i) Wastewater: from the community, includes wastes generated from both domestic and commercial/industrial sources. Untreated wastewater: from the community, includes wastes generated from both domestic and commercial/industrial sources before treatment. Treated wastewater: from the community, includes wastes generated from both domestic and commercial/industrial sources after treatment. (ii) Effluent is an alternative term for treated wastewater and is generally used to describe a liquid discharge from an industrial plant or wastewater treatment plant. (c) Yes. (d) No. Effluent (treated wastewater) has had these contaminants removed to a substantial degree through the treatment processes (e) The wastewater from the town of Northam is of largely domestic origin (eg from the kitchen, laundry, toilet and bathroom areas of households). A small quantity comes from commercial premises such as food outlets. All raw wastewater undergoes secondary treatment, followed by further treatment to reduce phosphorus concentrations, prior to discharge (of treated wastewater) into the Avon River. Additional treatment by disinfection is scheduled for the year 2007. (f)(i) In 2004/05, 216 000 cubic metres of treated wastewater was discharged to the Avon River. (ii) There is one discharge site, downstream from the Avon Weir (3.57 kilometres following the flow of the river). These activities are overseen by the Department of Environment and Conservation, which issues the Water Corporation with a licence governing the discharge. The Water Corporation complies with all conditions of this licence. (iii) One. (g) Untreated wastewater contains suspended solids, nutrients and bacteria. The purpose of the treatment is to reduce the concentrations of these contaminants to an acceptable level. (i) Contaminants prior to treatment are: Suspended Solids: 200 - 300 mg/L Biochemical Oxygen Demand: 200 - 300 mg/L Total Nitrogen: 40 - 100 mg/L Total Phosphorus: 7 - 14 mg/L Bacteria: 10 000 000 cfu/100 mL pH: 7 - 8 (ii) - (iii) Contaminants after treatment (ie prior to discharge into Avon River) are: Suspended Solids: 5 - 70 mg/L Biochemical Oxygen Demand: less than 30 mg/L Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
Untreated wastewater: from the community, includes wastes generated from both domestic and commercial/industrial sources before treatment. Treated wastewater: from the community, includes wastes generated from both domestic and commercial/industrial sources after treatment. (ii) Effluent is an alternative term for treated wastewater and is generally used to describe a liquid discharge from an industrial plant or wastewater treatment plant. (c) Yes. (d) No. Effluent (treated wastewater) has had these contaminants removed to a substantial degree through the treatment processes (e) The wastewater from the town of Northam is of largely domestic origin (eg from the kitchen, laundry, toilet and bathroom areas of households). A small quantity comes from commercial premises such as food outlets. All raw wastewater undergoes secondary treatment, followed by further treatment to reduce phosphorus concentrations, prior to discharge (of treated wastewater) into the Avon River. Additional treatment by disinfection is scheduled for the year 2007. (f)(i) In 2004/05, 216 000 cubic metres of treated wastewater was discharged to the Avon River. (ii) There is one discharge site, downstream from the Avon Weir (3.57 kilometres following the flow of the river). These activities are overseen by the Department of Environment and Conservation, which issues the Water Corporation with a licence governing the discharge. The Water Corporation complies with all conditions of this licence. (iii) One. (g) Untreated wastewater contains suspended solids, nutrients and bacteria. The purpose of the treatment is to reduce the concentrations of these contaminants to an acceptable level. (i) Contaminants prior to treatment are: Suspended Solids: 200 - 300 mg/L Biochemical Oxygen Demand: 200 - 300 mg/L Total Nitrogen: 40 - 100 mg/L Total Phosphorus: 7 - 14 mg/L Bacteria: 10 000 000 cfu/100 mL pH: 7 - 8 (ii) - (iii) Contaminants after treatment (ie prior to discharge into Avon River) are: Suspended Solids: 5 - 70 mg/L Biochemical Oxygen Demand: less than 30 mg/L Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
Treated wastewater: from the community, includes wastes generated from both domestic and commercial/industrial sources after treatment. (ii) Effluent is an alternative term for treated wastewater and is generally used to describe a liquid discharge from an industrial plant or wastewater treatment plant. (c) Yes. (d) No. Effluent (treated wastewater) has had these contaminants removed to a substantial degree through the treatment processes (e) The wastewater from the town of Northam is of largely domestic origin (eg from the kitchen, laundry, toilet and bathroom areas of households). A small quantity comes from commercial premises such as food outlets. All raw wastewater undergoes secondary treatment, followed by further treatment to reduce phosphorus concentrations, prior to discharge (of treated wastewater) into the Avon River. Additional treatment by disinfection is scheduled for the year 2007. (f)(i) In 2004/05, 216 000 cubic metres of treated wastewater was discharged to the Avon River. (ii) There is one discharge site, downstream from the Avon Weir (3.57 kilometres following the flow of the river). These activities are overseen by the Department of Environment and Conservation, which issues the Water Corporation with a licence governing the discharge. The Water Corporation complies with all conditions of this licence. (iii) One. (g) Untreated wastewater contains suspended solids, nutrients and bacteria. The purpose of the treatment is to reduce the concentrations of these contaminants to an acceptable level. (i) Contaminants prior to treatment are: Suspended Solids: 200 - 300 mg/L Biochemical Oxygen Demand: 200 - 300 mg/L Total Nitrogen: 40 - 100 mg/L Total Phosphorus: 7 - 14 mg/L Bacteria: 10 000 000 cfu/100 mL pH: 7 - 8 (ii) - (iii) Contaminants after treatment (ie prior to discharge into Avon River) are: Suspended Solids: 5 - 70 mg/L Biochemical Oxygen Demand: less than 30 mg/L Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
(ii) Effluent is an alternative term for treated wastewater and is generally used to describe a liquid discharge from an industrial plant or wastewater treatment plant. (c) Yes. (d) No. Effluent (treated wastewater) has had these contaminants removed to a substantial degree through the treatment processes (e) The wastewater from the town of Northam is of largely domestic origin (eg from the kitchen, laundry, toilet and bathroom areas of households). A small quantity comes from commercial premises such as food outlets. All raw wastewater undergoes secondary treatment, followed by further treatment to reduce phosphorus concentrations, prior to discharge (of treated wastewater) into the Avon River. Additional treatment by disinfection is scheduled for the year 2007. (f)(i) In 2004/05, 216 000 cubic metres of treated wastewater was discharged to the Avon River. (ii) There is one discharge site, downstream from the Avon Weir (3.57 kilometres following the flow of the river). These activities are overseen by the Department of Environment and Conservation, which issues the Water Corporation with a licence governing the discharge. The Water Corporation complies with all conditions of this licence. (iii) One. (g) Untreated wastewater contains suspended solids, nutrients and bacteria. The purpose of the treatment is to reduce the concentrations of these contaminants to an acceptable level. (i) Contaminants prior to treatment are: Suspended Solids: 200 - 300 mg/L Biochemical Oxygen Demand: 200 - 300 mg/L Total Nitrogen: 40 - 100 mg/L Total Phosphorus: 7 - 14 mg/L Bacteria: 10 000 000 cfu/100 mL pH: 7 - 8 (ii) - (iii) Contaminants after treatment (ie prior to discharge into Avon River) are: Suspended Solids: 5 - 70 mg/L Biochemical Oxygen Demand: less than 30 mg/L Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
(c) Yes. (d) No. Effluent (treated wastewater) has had these contaminants removed to a substantial degree through the treatment processes (e) The wastewater from the town of Northam is of largely domestic origin (eg from the kitchen, laundry, toilet and bathroom areas of households). A small quantity comes from commercial premises such as food outlets. All raw wastewater undergoes secondary treatment, followed by further treatment to reduce phosphorus concentrations, prior to discharge (of treated wastewater) into the Avon River. Additional treatment by disinfection is scheduled for the year 2007. (f)(i) In 2004/05, 216 000 cubic metres of treated wastewater was discharged to the Avon River. (ii) There is one discharge site, downstream from the Avon Weir (3.57 kilometres following the flow of the river). These activities are overseen by the Department of Environment and Conservation, which issues the Water Corporation with a licence governing the discharge. The Water Corporation complies with all conditions of this licence. (iii) One. (g) Untreated wastewater contains suspended solids, nutrients and bacteria. The purpose of the treatment is to reduce the concentrations of these contaminants to an acceptable level. (i) Contaminants prior to treatment are: Suspended Solids: 200 - 300 mg/L Biochemical Oxygen Demand: 200 - 300 mg/L Total Nitrogen: 40 - 100 mg/L Total Phosphorus: 7 - 14 mg/L Bacteria: 10 000 000 cfu/100 mL pH: 7 - 8 (ii) - (iii) Contaminants after treatment (ie prior to discharge into Avon River) are: Suspended Solids: 5 - 70 mg/L Biochemical Oxygen Demand: less than 30 mg/L Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
(d) No. Effluent (treated wastewater) has had these contaminants removed to a substantial degree through the treatment processes (e) The wastewater from the town of Northam is of largely domestic origin (eg from the kitchen, laundry, toilet and bathroom areas of households). A small quantity comes from commercial premises such as food outlets. All raw wastewater undergoes secondary treatment, followed by further treatment to reduce phosphorus concentrations, prior to discharge (of treated wastewater) into the Avon River. Additional treatment by disinfection is scheduled for the year 2007. (f)(i) In 2004/05, 216 000 cubic metres of treated wastewater was discharged to the Avon River. (ii) There is one discharge site, downstream from the Avon Weir (3.57 kilometres following the flow of the river). These activities are overseen by the Department of Environment and Conservation, which issues the Water Corporation with a licence governing the discharge. The Water Corporation complies with all conditions of this licence. (iii) One. (g) Untreated wastewater contains suspended solids, nutrients and bacteria. The purpose of the treatment is to reduce the concentrations of these contaminants to an acceptable level. (i) Contaminants prior to treatment are: Suspended Solids: 200 - 300 mg/L Biochemical Oxygen Demand: 200 - 300 mg/L Total Nitrogen: 40 - 100 mg/L Total Phosphorus: 7 - 14 mg/L Bacteria: 10 000 000 cfu/100 mL pH: 7 - 8 (ii) - (iii) Contaminants after treatment (ie prior to discharge into Avon River) are: Suspended Solids: 5 - 70 mg/L Biochemical Oxygen Demand: less than 30 mg/L Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
(e) The wastewater from the town of Northam is of largely domestic origin (eg from the kitchen, laundry, toilet and bathroom areas of households). A small quantity comes from commercial premises such as food outlets. All raw wastewater undergoes secondary treatment, followed by further treatment to reduce phosphorus concentrations, prior to discharge (of treated wastewater) into the Avon River. Additional treatment by disinfection is scheduled for the year 2007. (f)(i) In 2004/05, 216 000 cubic metres of treated wastewater was discharged to the Avon River. (ii) There is one discharge site, downstream from the Avon Weir (3.57 kilometres following the flow of the river). These activities are overseen by the Department of Environment and Conservation, which issues the Water Corporation with a licence governing the discharge. The Water Corporation complies with all conditions of this licence. (iii) One. (g) Untreated wastewater contains suspended solids, nutrients and bacteria. The purpose of the treatment is to reduce the concentrations of these contaminants to an acceptable level. (i) Contaminants prior to treatment are: Suspended Solids: 200 - 300 mg/L Biochemical Oxygen Demand: 200 - 300 mg/L Total Nitrogen: 40 - 100 mg/L Total Phosphorus: 7 - 14 mg/L Bacteria: 10 000 000 cfu/100 mL pH: 7 - 8 (ii) - (iii) Contaminants after treatment (ie prior to discharge into Avon River) are: Suspended Solids: 5 - 70 mg/L Biochemical Oxygen Demand: less than 30 mg/L Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
Additional treatment by disinfection is scheduled for the year 2007. (f)(i) In 2004/05, 216 000 cubic metres of treated wastewater was discharged to the Avon River. (ii) There is one discharge site, downstream from the Avon Weir (3.57 kilometres following the flow of the river). These activities are overseen by the Department of Environment and Conservation, which issues the Water Corporation with a licence governing the discharge. The Water Corporation complies with all conditions of this licence. (iii) One. (g) Untreated wastewater contains suspended solids, nutrients and bacteria. The purpose of the treatment is to reduce the concentrations of these contaminants to an acceptable level. (i) Contaminants prior to treatment are: Suspended Solids: 200 - 300 mg/L Biochemical Oxygen Demand: 200 - 300 mg/L Total Nitrogen: 40 - 100 mg/L Total Phosphorus: 7 - 14 mg/L Bacteria: 10 000 000 cfu/100 mL pH: 7 - 8 (ii) - (iii) Contaminants after treatment (ie prior to discharge into Avon River) are: Suspended Solids: 5 - 70 mg/L Biochemical Oxygen Demand: less than 30 mg/L Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
(f)(i) In 2004/05, 216 000 cubic metres of treated wastewater was discharged to the Avon River. (ii) There is one discharge site, downstream from the Avon Weir (3.57 kilometres following the flow of the river). These activities are overseen by the Department of Environment and Conservation, which issues the Water Corporation with a licence governing the discharge. The Water Corporation complies with all conditions of this licence. (iii) One. (g) Untreated wastewater contains suspended solids, nutrients and bacteria. The purpose of the treatment is to reduce the concentrations of these contaminants to an acceptable level. (i) Contaminants prior to treatment are: Suspended Solids: 200 - 300 mg/L Biochemical Oxygen Demand: 200 - 300 mg/L Total Nitrogen: 40 - 100 mg/L Total Phosphorus: 7 - 14 mg/L Bacteria: 10 000 000 cfu/100 mL pH: 7 - 8 (ii) - (iii) Contaminants after treatment (ie prior to discharge into Avon River) are: Suspended Solids: 5 - 70 mg/L Biochemical Oxygen Demand: less than 30 mg/L Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
(ii) There is one discharge site, downstream from the Avon Weir (3.57 kilometres following the flow of the river). These activities are overseen by the Department of Environment and Conservation, which issues the Water Corporation with a licence governing the discharge. The Water Corporation complies with all conditions of this licence. (iii) One. (g) Untreated wastewater contains suspended solids, nutrients and bacteria. The purpose of the treatment is to reduce the concentrations of these contaminants to an acceptable level. (i) Contaminants prior to treatment are: Suspended Solids: 200 - 300 mg/L Biochemical Oxygen Demand: 200 - 300 mg/L Total Nitrogen: 40 - 100 mg/L Total Phosphorus: 7 - 14 mg/L Bacteria: 10 000 000 cfu/100 mL pH: 7 - 8 (ii) - (iii) Contaminants after treatment (ie prior to discharge into Avon River) are: Suspended Solids: 5 - 70 mg/L Biochemical Oxygen Demand: less than 30 mg/L Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
(iii) One. (g) Untreated wastewater contains suspended solids, nutrients and bacteria. The purpose of the treatment is to reduce the concentrations of these contaminants to an acceptable level. (i) Contaminants prior to treatment are: Suspended Solids: 200 - 300 mg/L Biochemical Oxygen Demand: 200 - 300 mg/L Total Nitrogen: 40 - 100 mg/L Total Phosphorus: 7 - 14 mg/L Bacteria: 10 000 000 cfu/100 mL pH: 7 - 8 (ii) - (iii) Contaminants after treatment (ie prior to discharge into Avon River) are: Suspended Solids: 5 - 70 mg/L Biochemical Oxygen Demand: less than 30 mg/L Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
(g) Untreated wastewater contains suspended solids, nutrients and bacteria. The purpose of the treatment is to reduce the concentrations of these contaminants to an acceptable level. (i) Contaminants prior to treatment are: Suspended Solids: 200 - 300 mg/L Biochemical Oxygen Demand: 200 - 300 mg/L Total Nitrogen: 40 - 100 mg/L Total Phosphorus: 7 - 14 mg/L Bacteria: 10 000 000 cfu/100 mL pH: 7 - 8 (ii) - (iii) Contaminants after treatment (ie prior to discharge into Avon River) are: Suspended Solids: 5 - 70 mg/L Biochemical Oxygen Demand: less than 30 mg/L Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
(i) Contaminants prior to treatment are: Suspended Solids: 200 - 300 mg/L Biochemical Oxygen Demand: 200 - 300 mg/L Total Nitrogen: 40 - 100 mg/L Total Phosphorus: 7 - 14 mg/L Bacteria: 10 000 000 cfu/100 mL pH: 7 - 8 (ii) - (iii) Contaminants after treatment (ie prior to discharge into Avon River) are: Suspended Solids: 5 - 70 mg/L Biochemical Oxygen Demand: less than 30 mg/L Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
Suspended Solids: 200 - 300 mg/L Biochemical Oxygen Demand: 200 - 300 mg/L Total Nitrogen: 40 - 100 mg/L Total Phosphorus: 7 - 14 mg/L Bacteria: 10 000 000 cfu/100 mL pH: 7 - 8 (ii) - (iii) Contaminants after treatment (ie prior to discharge into Avon River) are: Suspended Solids: 5 - 70 mg/L Biochemical Oxygen Demand: less than 30 mg/L Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
Biochemical Oxygen Demand: 200 - 300 mg/L Total Nitrogen: 40 - 100 mg/L Total Phosphorus: 7 - 14 mg/L Bacteria: 10 000 000 cfu/100 mL pH: 7 - 8 (ii) - (iii) Contaminants after treatment (ie prior to discharge into Avon River) are: Suspended Solids: 5 - 70 mg/L Biochemical Oxygen Demand: less than 30 mg/L Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
Total Nitrogen: 40 - 100 mg/L Total Phosphorus: 7 - 14 mg/L Bacteria: 10 000 000 cfu/100 mL pH: 7 - 8 (ii) - (iii) Contaminants after treatment (ie prior to discharge into Avon River) are: Suspended Solids: 5 - 70 mg/L Biochemical Oxygen Demand: less than 30 mg/L Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
Total Phosphorus: 7 - 14 mg/L Bacteria: 10 000 000 cfu/100 mL pH: 7 - 8 (ii) - (iii) Contaminants after treatment (ie prior to discharge into Avon River) are: Suspended Solids: 5 - 70 mg/L Biochemical Oxygen Demand: less than 30 mg/L Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
Bacteria: 10 000 000 cfu/100 mL pH: 7 - 8 (ii) - (iii) Contaminants after treatment (ie prior to discharge into Avon River) are: Suspended Solids: 5 - 70 mg/L Biochemical Oxygen Demand: less than 30 mg/L Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
pH: 7 - 8 (ii) - (iii) Contaminants after treatment (ie prior to discharge into Avon River) are: Suspended Solids: 5 - 70 mg/L Biochemical Oxygen Demand: less than 30 mg/L Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
(ii) - (iii) Contaminants after treatment (ie prior to discharge into Avon River) are: Suspended Solids: 5 - 70 mg/L Biochemical Oxygen Demand: less than 30 mg/L Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
Suspended Solids: 5 - 70 mg/L Biochemical Oxygen Demand: less than 30 mg/L Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
Biochemical Oxygen Demand: less than 30 mg/L Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
Total Nitrogen: 20 - 50 mg/L Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
Total Phosphorus: less than 1 mg/L Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
Bacteria: less than 5,000 cfu/100 mL pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
pH: 6.5 - 8 (h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
(h) - (i) Refer to (b) and (g). (j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
(j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including: · Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
· Discharge into water bodies such as rivers and marine systems. · Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
· Reuse of treated wastewater by irrigation of public open space. (k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
(k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges. (l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
(l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions. Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point. (m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
(m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories. (n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
(n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities. (o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
(o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective. (p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
(p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
AnswerView source ↗
Answered
1 August 2006
Responded by
Minister for Water Resources
Response time
47 days
(a) No.
(b)(i) Wastewater: from the community, includes wastes generated from both domestic and commercial/industrial sources.
Untreated wastewater: from the community, includes wastes generated from both domestic and commercial/industrial sources before treatment.
Treated wastewater: from the community, includes wastes generated from both domestic and commercial/industrial sources after treatment.
(ii) Effluent is an alternative term for treated wastewater and is generally used to describe a liquid discharge from an industrial plant or wastewater treatment plant.
(c) Yes.
(d) No. Effluent (treated wastewater) has had these contaminants removed to a substantial degree through the treatment processes
(e) The wastewater from the town of Northam is of largely domestic origin (eg from the kitchen, laundry, toilet and bathroom areas of households). A small quantity comes from commercial premises such as food outlets. All raw wastewater undergoes secondary treatment, followed by further treatment to reduce phosphorus concentrations, prior to discharge (of treated wastewater) into the Avon River.
Additional treatment by disinfection is scheduled for the year 2007.
(f)(i) In 2004/05, 216 000 cubic metres of treated wastewater was discharged to the Avon River.
(ii) There is one discharge site, downstream from the Avon Weir (3.57 kilometres following the flow of the river). These activities are overseen by the Department of Environment and Conservation, which issues the Water Corporation with a licence governing the discharge. The Water Corporation complies with all conditions of this licence.
(iii) One.
(g) Untreated wastewater contains suspended solids, nutrients and bacteria. The purpose of the treatment is to reduce the concentrations of these contaminants to an acceptable level.
(i) Contaminants prior to treatment are:
Suspended Solids: 200 - 300 mg/L
Biochemical Oxygen Demand: 200 - 300 mg/L
Total Nitrogen: 40 - 100 mg/L
Total Phosphorus: 7 - 14 mg/L
Bacteria: 10 000 000 cfu/100 mL
pH: 7 - 8
(ii) - (iii) Contaminants after treatment (ie prior to discharge into Avon River) are:
Suspended Solids: 5 - 70 mg/L
Biochemical Oxygen Demand: less than 30 mg/L
Total Nitrogen: 20 - 50 mg/L
Total Phosphorus: less than 1 mg/L
Bacteria: less than 5,000 cfu/100 mL
pH: 6.5 - 8
(h) - (i) Refer to (b) and (g).
(j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including:
· Discharge into water bodies such as rivers and marine systems.
· Reuse of treated wastewater by irrigation of public open space.
(k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges.
(l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions.
Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point.
(m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories.
(n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities.
(o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective.
(p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
(b)(i) Wastewater: from the community, includes wastes generated from both domestic and commercial/industrial sources.
Untreated wastewater: from the community, includes wastes generated from both domestic and commercial/industrial sources before treatment.
Treated wastewater: from the community, includes wastes generated from both domestic and commercial/industrial sources after treatment.
(ii) Effluent is an alternative term for treated wastewater and is generally used to describe a liquid discharge from an industrial plant or wastewater treatment plant.
(c) Yes.
(d) No. Effluent (treated wastewater) has had these contaminants removed to a substantial degree through the treatment processes
(e) The wastewater from the town of Northam is of largely domestic origin (eg from the kitchen, laundry, toilet and bathroom areas of households). A small quantity comes from commercial premises such as food outlets. All raw wastewater undergoes secondary treatment, followed by further treatment to reduce phosphorus concentrations, prior to discharge (of treated wastewater) into the Avon River.
Additional treatment by disinfection is scheduled for the year 2007.
(f)(i) In 2004/05, 216 000 cubic metres of treated wastewater was discharged to the Avon River.
(ii) There is one discharge site, downstream from the Avon Weir (3.57 kilometres following the flow of the river). These activities are overseen by the Department of Environment and Conservation, which issues the Water Corporation with a licence governing the discharge. The Water Corporation complies with all conditions of this licence.
(iii) One.
(g) Untreated wastewater contains suspended solids, nutrients and bacteria. The purpose of the treatment is to reduce the concentrations of these contaminants to an acceptable level.
(i) Contaminants prior to treatment are:
Suspended Solids: 200 - 300 mg/L
Biochemical Oxygen Demand: 200 - 300 mg/L
Total Nitrogen: 40 - 100 mg/L
Total Phosphorus: 7 - 14 mg/L
Bacteria: 10 000 000 cfu/100 mL
pH: 7 - 8
(ii) - (iii) Contaminants after treatment (ie prior to discharge into Avon River) are:
Suspended Solids: 5 - 70 mg/L
Biochemical Oxygen Demand: less than 30 mg/L
Total Nitrogen: 20 - 50 mg/L
Total Phosphorus: less than 1 mg/L
Bacteria: less than 5,000 cfu/100 mL
pH: 6.5 - 8
(h) - (i) Refer to (b) and (g).
(j)(i) - (iii) Hazards to human health associated with wastewater disposal depend on the method of disposal and the opportunity for human exposure. There are established guidelines administered by the Department of Environment and Conservation and the Department of Health governing different methods of disposal including:
· Discharge into water bodies such as rivers and marine systems.
· Reuse of treated wastewater by irrigation of public open space.
(k) The Department of Environment and Conservation uses established water quality criteria for the protection of freshwater eco-systems when setting licence conditions for wastewater discharges.
(l) The major environmental risk associated with wastewater discharge into inland rivers is through nutrient enrichment. This is a key consideration of the Department of Environment and Conservation in determining licence conditions.
Nutrient loads from the wastewater treatment plant at Northam are small (less than 1 per cent), in comparison to the total nutrient loads entering the system from various land uses in the catchment. Sampling and testing of water in the Avon River, upstream and downstream of the treated wastewater discharge point has occurred since 2003. The testing has shown that the quality of water in the river is not compromised, and that within a distance of two kilometres downstream of the treated wastewater discharge point the quality of water is similar to the quality of the water upstream of the discharge point.
(m) When there is flow in the Avon River, samples are taken every fortnight. As at 13 July 2006: samples were last taken from the river on 13 June, 27 June and 11 July 2006; results of the samples taken on 13 June show no discernable change in nutrient concentration; and analyses of the samples taken on 27 June and 11 July are still being undertaken by relevant laboratories.
(n) The Water Corporation does not undertake monitoring beyond testing for wastewater related activities.
(o) The disposal of treated wastewater into the Avon River is acceptable from both an environmental and public health perspective.
(p) No. Neither would I swim at many places upstream of this discharge point. It is not recommended to swim in the immediate vicinity of the wastewater discharge point. The additional treatment by disinfection will substantially reduce any risks associated with such activities.
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