❓ A WA parliamentary question addresses concerns about a wastewater treatment plant in Mundaring, specifically regarding effluent overflow and its suitability for the hills environment. The Minister acknowledges the overflow issue and outlines ongoing investigations.
AnsweredQoN 244Legislative Council
QuestionView source ↗
I refer to the waste water treatment plant on Darkan Street, Mundaring and ask - (1) What type of treatment plant is it? (2) Does the plant have a problem with effluent overflowing the adjacent road into Jarrah Creek? (3) Is the plant operating efficiently? (4) Is this type of plant suitable for the hills environment? (5) Are more of this type of plant planned; if so, where? Hon TOM STEPHENS
AnswerView source ↗
I thank the member for some notice of this question. (1) It is an advanced waste water treatment plant with intermittently decanted extended aeration. (2) Yes, a small amount of highly treated effluent is overflowing from the last manhole of the effluent infiltration system. The plant was designed for all of the effluent to soak into the ground, but the effluent infiltration system is not coping with the current flows. Alternative methods of effluent disposal or reuse are under investigation. These investigations will take place over the next three months. (3) Yes, the effluent being produced by the treatment plant is of exceptionally high quality. (4)-(5) Yes, to service residential nodes in the hills area. Long-term land planning has identified a number of such nodes, but none has come to fruition at this stage. This involves installing local advanced treatment plants with nearby effluent reuse.
(1) What type of treatment plant is it? (2) Does the plant have a problem with effluent overflowing the adjacent road into Jarrah Creek? (3) Is the plant operating efficiently? (4) Is this type of plant suitable for the hills environment? (5) Are more of this type of plant planned; if so, where? Hon TOM STEPHENS replied: I thank the member for some notice of this question. (1) It is an advanced waste water treatment plant with intermittently decanted extended aeration. (2) Yes, a small amount of highly treated effluent is overflowing from the last manhole of the effluent infiltration system. The plant was designed for all of the effluent to soak into the ground, but the effluent infiltration system is not coping with the current flows. Alternative methods of effluent disposal or reuse are under investigation. These investigations will take place over the next three months. (3) Yes, the effluent being produced by the treatment plant is of exceptionally high quality. (4)-(5) Yes, to service residential nodes in the hills area. Long-term land planning has identified a number of such nodes, but none has come to fruition at this stage. This involves installing local advanced treatment plants with nearby effluent reuse.
(2) Does the plant have a problem with effluent overflowing the adjacent road into Jarrah Creek? (3) Is the plant operating efficiently? (4) Is this type of plant suitable for the hills environment? (5) Are more of this type of plant planned; if so, where? Hon TOM STEPHENS replied: I thank the member for some notice of this question. (1) It is an advanced waste water treatment plant with intermittently decanted extended aeration. (2) Yes, a small amount of highly treated effluent is overflowing from the last manhole of the effluent infiltration system. The plant was designed for all of the effluent to soak into the ground, but the effluent infiltration system is not coping with the current flows. Alternative methods of effluent disposal or reuse are under investigation. These investigations will take place over the next three months. (3) Yes, the effluent being produced by the treatment plant is of exceptionally high quality. (4)-(5) Yes, to service residential nodes in the hills area. Long-term land planning has identified a number of such nodes, but none has come to fruition at this stage. This involves installing local advanced treatment plants with nearby effluent reuse.
(3) Is the plant operating efficiently? (4) Is this type of plant suitable for the hills environment? (5) Are more of this type of plant planned; if so, where? Hon TOM STEPHENS replied: I thank the member for some notice of this question. (1) It is an advanced waste water treatment plant with intermittently decanted extended aeration. (2) Yes, a small amount of highly treated effluent is overflowing from the last manhole of the effluent infiltration system. The plant was designed for all of the effluent to soak into the ground, but the effluent infiltration system is not coping with the current flows. Alternative methods of effluent disposal or reuse are under investigation. These investigations will take place over the next three months. (3) Yes, the effluent being produced by the treatment plant is of exceptionally high quality. (4)-(5) Yes, to service residential nodes in the hills area. Long-term land planning has identified a number of such nodes, but none has come to fruition at this stage. This involves installing local advanced treatment plants with nearby effluent reuse.
(4) Is this type of plant suitable for the hills environment? (5) Are more of this type of plant planned; if so, where? Hon TOM STEPHENS replied: I thank the member for some notice of this question. (1) It is an advanced waste water treatment plant with intermittently decanted extended aeration. (2) Yes, a small amount of highly treated effluent is overflowing from the last manhole of the effluent infiltration system. The plant was designed for all of the effluent to soak into the ground, but the effluent infiltration system is not coping with the current flows. Alternative methods of effluent disposal or reuse are under investigation. These investigations will take place over the next three months. (3) Yes, the effluent being produced by the treatment plant is of exceptionally high quality. (4)-(5) Yes, to service residential nodes in the hills area. Long-term land planning has identified a number of such nodes, but none has come to fruition at this stage. This involves installing local advanced treatment plants with nearby effluent reuse.
(5) Are more of this type of plant planned; if so, where? Hon TOM STEPHENS replied: I thank the member for some notice of this question. (1) It is an advanced waste water treatment plant with intermittently decanted extended aeration. (2) Yes, a small amount of highly treated effluent is overflowing from the last manhole of the effluent infiltration system. The plant was designed for all of the effluent to soak into the ground, but the effluent infiltration system is not coping with the current flows. Alternative methods of effluent disposal or reuse are under investigation. These investigations will take place over the next three months. (3) Yes, the effluent being produced by the treatment plant is of exceptionally high quality. (4)-(5) Yes, to service residential nodes in the hills area. Long-term land planning has identified a number of such nodes, but none has come to fruition at this stage. This involves installing local advanced treatment plants with nearby effluent reuse.
Hon TOM STEPHENS replied: I thank the member for some notice of this question. (1) It is an advanced waste water treatment plant with intermittently decanted extended aeration. (2) Yes, a small amount of highly treated effluent is overflowing from the last manhole of the effluent infiltration system. The plant was designed for all of the effluent to soak into the ground, but the effluent infiltration system is not coping with the current flows. Alternative methods of effluent disposal or reuse are under investigation. These investigations will take place over the next three months. (3) Yes, the effluent being produced by the treatment plant is of exceptionally high quality. (4)-(5) Yes, to service residential nodes in the hills area. Long-term land planning has identified a number of such nodes, but none has come to fruition at this stage. This involves installing local advanced treatment plants with nearby effluent reuse.
I thank the member for some notice of this question. (1) It is an advanced waste water treatment plant with intermittently decanted extended aeration. (2) Yes, a small amount of highly treated effluent is overflowing from the last manhole of the effluent infiltration system. The plant was designed for all of the effluent to soak into the ground, but the effluent infiltration system is not coping with the current flows. Alternative methods of effluent disposal or reuse are under investigation. These investigations will take place over the next three months. (3) Yes, the effluent being produced by the treatment plant is of exceptionally high quality. (4)-(5) Yes, to service residential nodes in the hills area. Long-term land planning has identified a number of such nodes, but none has come to fruition at this stage. This involves installing local advanced treatment plants with nearby effluent reuse.
(1) It is an advanced waste water treatment plant with intermittently decanted extended aeration. (2) Yes, a small amount of highly treated effluent is overflowing from the last manhole of the effluent infiltration system. The plant was designed for all of the effluent to soak into the ground, but the effluent infiltration system is not coping with the current flows. Alternative methods of effluent disposal or reuse are under investigation. These investigations will take place over the next three months. (3) Yes, the effluent being produced by the treatment plant is of exceptionally high quality. (4)-(5) Yes, to service residential nodes in the hills area. Long-term land planning has identified a number of such nodes, but none has come to fruition at this stage. This involves installing local advanced treatment plants with nearby effluent reuse.
(2) Yes, a small amount of highly treated effluent is overflowing from the last manhole of the effluent infiltration system. The plant was designed for all of the effluent to soak into the ground, but the effluent infiltration system is not coping with the current flows. Alternative methods of effluent disposal or reuse are under investigation. These investigations will take place over the next three months. (3) Yes, the effluent being produced by the treatment plant is of exceptionally high quality. (4)-(5) Yes, to service residential nodes in the hills area. Long-term land planning has identified a number of such nodes, but none has come to fruition at this stage. This involves installing local advanced treatment plants with nearby effluent reuse.
(3) Yes, the effluent being produced by the treatment plant is of exceptionally high quality. (4)-(5) Yes, to service residential nodes in the hills area. Long-term land planning has identified a number of such nodes, but none has come to fruition at this stage. This involves installing local advanced treatment plants with nearby effluent reuse.
(4)-(5) Yes, to service residential nodes in the hills area. Long-term land planning has identified a number of such nodes, but none has come to fruition at this stage. This involves installing local advanced treatment plants with nearby effluent reuse.
(1) What type of treatment plant is it? (2) Does the plant have a problem with effluent overflowing the adjacent road into Jarrah Creek? (3) Is the plant operating efficiently? (4) Is this type of plant suitable for the hills environment? (5) Are more of this type of plant planned; if so, where? Hon TOM STEPHENS replied: I thank the member for some notice of this question. (1) It is an advanced waste water treatment plant with intermittently decanted extended aeration. (2) Yes, a small amount of highly treated effluent is overflowing from the last manhole of the effluent infiltration system. The plant was designed for all of the effluent to soak into the ground, but the effluent infiltration system is not coping with the current flows. Alternative methods of effluent disposal or reuse are under investigation. These investigations will take place over the next three months. (3) Yes, the effluent being produced by the treatment plant is of exceptionally high quality. (4)-(5) Yes, to service residential nodes in the hills area. Long-term land planning has identified a number of such nodes, but none has come to fruition at this stage. This involves installing local advanced treatment plants with nearby effluent reuse.
(2) Does the plant have a problem with effluent overflowing the adjacent road into Jarrah Creek? (3) Is the plant operating efficiently? (4) Is this type of plant suitable for the hills environment? (5) Are more of this type of plant planned; if so, where? Hon TOM STEPHENS replied: I thank the member for some notice of this question. (1) It is an advanced waste water treatment plant with intermittently decanted extended aeration. (2) Yes, a small amount of highly treated effluent is overflowing from the last manhole of the effluent infiltration system. The plant was designed for all of the effluent to soak into the ground, but the effluent infiltration system is not coping with the current flows. Alternative methods of effluent disposal or reuse are under investigation. These investigations will take place over the next three months. (3) Yes, the effluent being produced by the treatment plant is of exceptionally high quality. (4)-(5) Yes, to service residential nodes in the hills area. Long-term land planning has identified a number of such nodes, but none has come to fruition at this stage. This involves installing local advanced treatment plants with nearby effluent reuse.
(3) Is the plant operating efficiently? (4) Is this type of plant suitable for the hills environment? (5) Are more of this type of plant planned; if so, where? Hon TOM STEPHENS replied: I thank the member for some notice of this question. (1) It is an advanced waste water treatment plant with intermittently decanted extended aeration. (2) Yes, a small amount of highly treated effluent is overflowing from the last manhole of the effluent infiltration system. The plant was designed for all of the effluent to soak into the ground, but the effluent infiltration system is not coping with the current flows. Alternative methods of effluent disposal or reuse are under investigation. These investigations will take place over the next three months. (3) Yes, the effluent being produced by the treatment plant is of exceptionally high quality. (4)-(5) Yes, to service residential nodes in the hills area. Long-term land planning has identified a number of such nodes, but none has come to fruition at this stage. This involves installing local advanced treatment plants with nearby effluent reuse.
(4) Is this type of plant suitable for the hills environment? (5) Are more of this type of plant planned; if so, where? Hon TOM STEPHENS replied: I thank the member for some notice of this question. (1) It is an advanced waste water treatment plant with intermittently decanted extended aeration. (2) Yes, a small amount of highly treated effluent is overflowing from the last manhole of the effluent infiltration system. The plant was designed for all of the effluent to soak into the ground, but the effluent infiltration system is not coping with the current flows. Alternative methods of effluent disposal or reuse are under investigation. These investigations will take place over the next three months. (3) Yes, the effluent being produced by the treatment plant is of exceptionally high quality. (4)-(5) Yes, to service residential nodes in the hills area. Long-term land planning has identified a number of such nodes, but none has come to fruition at this stage. This involves installing local advanced treatment plants with nearby effluent reuse.
(5) Are more of this type of plant planned; if so, where? Hon TOM STEPHENS replied: I thank the member for some notice of this question. (1) It is an advanced waste water treatment plant with intermittently decanted extended aeration. (2) Yes, a small amount of highly treated effluent is overflowing from the last manhole of the effluent infiltration system. The plant was designed for all of the effluent to soak into the ground, but the effluent infiltration system is not coping with the current flows. Alternative methods of effluent disposal or reuse are under investigation. These investigations will take place over the next three months. (3) Yes, the effluent being produced by the treatment plant is of exceptionally high quality. (4)-(5) Yes, to service residential nodes in the hills area. Long-term land planning has identified a number of such nodes, but none has come to fruition at this stage. This involves installing local advanced treatment plants with nearby effluent reuse.
Hon TOM STEPHENS replied: I thank the member for some notice of this question. (1) It is an advanced waste water treatment plant with intermittently decanted extended aeration. (2) Yes, a small amount of highly treated effluent is overflowing from the last manhole of the effluent infiltration system. The plant was designed for all of the effluent to soak into the ground, but the effluent infiltration system is not coping with the current flows. Alternative methods of effluent disposal or reuse are under investigation. These investigations will take place over the next three months. (3) Yes, the effluent being produced by the treatment plant is of exceptionally high quality. (4)-(5) Yes, to service residential nodes in the hills area. Long-term land planning has identified a number of such nodes, but none has come to fruition at this stage. This involves installing local advanced treatment plants with nearby effluent reuse.
I thank the member for some notice of this question. (1) It is an advanced waste water treatment plant with intermittently decanted extended aeration. (2) Yes, a small amount of highly treated effluent is overflowing from the last manhole of the effluent infiltration system. The plant was designed for all of the effluent to soak into the ground, but the effluent infiltration system is not coping with the current flows. Alternative methods of effluent disposal or reuse are under investigation. These investigations will take place over the next three months. (3) Yes, the effluent being produced by the treatment plant is of exceptionally high quality. (4)-(5) Yes, to service residential nodes in the hills area. Long-term land planning has identified a number of such nodes, but none has come to fruition at this stage. This involves installing local advanced treatment plants with nearby effluent reuse.
(1) It is an advanced waste water treatment plant with intermittently decanted extended aeration. (2) Yes, a small amount of highly treated effluent is overflowing from the last manhole of the effluent infiltration system. The plant was designed for all of the effluent to soak into the ground, but the effluent infiltration system is not coping with the current flows. Alternative methods of effluent disposal or reuse are under investigation. These investigations will take place over the next three months. (3) Yes, the effluent being produced by the treatment plant is of exceptionally high quality. (4)-(5) Yes, to service residential nodes in the hills area. Long-term land planning has identified a number of such nodes, but none has come to fruition at this stage. This involves installing local advanced treatment plants with nearby effluent reuse.
(2) Yes, a small amount of highly treated effluent is overflowing from the last manhole of the effluent infiltration system. The plant was designed for all of the effluent to soak into the ground, but the effluent infiltration system is not coping with the current flows. Alternative methods of effluent disposal or reuse are under investigation. These investigations will take place over the next three months. (3) Yes, the effluent being produced by the treatment plant is of exceptionally high quality. (4)-(5) Yes, to service residential nodes in the hills area. Long-term land planning has identified a number of such nodes, but none has come to fruition at this stage. This involves installing local advanced treatment plants with nearby effluent reuse.
(3) Yes, the effluent being produced by the treatment plant is of exceptionally high quality. (4)-(5) Yes, to service residential nodes in the hills area. Long-term land planning has identified a number of such nodes, but none has come to fruition at this stage. This involves installing local advanced treatment plants with nearby effluent reuse.
(4)-(5) Yes, to service residential nodes in the hills area. Long-term land planning has identified a number of such nodes, but none has come to fruition at this stage. This involves installing local advanced treatment plants with nearby effluent reuse.
Explore WA Government Data
Search the full archive in the free dashboard, or query programmatically via API.
Explore more
Government Gazette
Appointments, regulatory notices, planning changes.
Hansard
Debates, questions, speeches and sentiment.
Tabled Papers
Reports and documents tabled in Parliament.
Committees
Committee profiles and recent reports.
Regulations
Subsidiary legislation with filters and summaries.
Bills
Proposed laws and parliamentary progress.
Acts
Current WA legislation and summaries.
Explanatory Memoranda
Bills with EMs (text/PDF) available.
Members
MP profiles, party breakdown and rankings.
Pollie Rankings
Data-driven rankings across 19 categories.
Amendment Chains
Track how schemes and regulations evolve over time.