A WA parliamentary question regarding the funding, research, and cost-benefit analysis of the Great Gardens program, aimed at reducing nutrient discharge and improving water quality in the Swan River. The answer provides funding details, tables research, and explains the program's effectiveness and its role within a broader strategy.

AnsweredQoN 5993Legislative Council
Asked
11 September 2012
Portfolio
Environment

QuestionView source ↗

I refer to the Great Gardens education program as a management practice to the effective management of sustainable gardening practices with one objective being nutrient reduction and water quality control. I also refer to the Swan River Trust website and its reference to a significant reduction of nutrient discharge from domestic gardens since the program's inception in 2003, and I ask —
(1) Please specify the year-by-year funding that has been directed to the Great Gardens program since its inception in September 2003?
(2) Will the Minister please table the research referred to by the Swan River Trust?
(3) What cost-benefit analysis is undertaken to assess the Great Gardens effectiveness as an effective nutrient control practice in comparison to alternative Best Management Practices?

AnswerView source ↗

Answered
16 October 2012
Responded by
Minister for Mental Health representing the Minister for Environment
Response time
35 days
(1) Great Gardens program funding year by year.
Year
Budget
2003-04
$140,000
2004-05
$125,000
2005-06
$110,000
2006-07
$150,000
2007-08
$137,500
2008-09
$138,000
2009-10
$115,000
2010-11
$100,000
2011-12
$70,000
(2)
[See tabled paper no]
(3)
The recognised industry standard for workshop participants making behavior change is 30-40% and the Great Gardens program has regularly achieved this benchmark and higher.
A specific cost benefit analysis comparing Great Gardens with other Best Management Practices has not been conducted. However, the Swan River Trust takes a catchment to coast, multi faceted approach to reducing nutrients reaching Perth's waterways. This includes regulation, catchment management, on-ground works and behavior change programs such as Great Gardens.
An independent desktop study completed by GHD in August 2007 found that each Great Gardens workshop participant reduced their irrigation and nutrient export from their garden by 30-40%.
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