Yarra Valley Water is proposing a stormwater harvesting and reuse project in Coburg, an identified Principal Activity Centre under Melbourne's 2030 growth strategy. The project would harvest stormwater from two existing drains using underground tanks, treat it to recycled water standards using an ultra-filtration plant, and reticulate the recycled water to new homes and apartments in the area for non-potable use as well as nearby public spaces for irrigation. This would substitute 213 ML of potable water per year, improve stormwater quality, and reduce urban runoff to local waterways. Construction is slated to begin in August 2011 following further planning and design work.

1. Yarra Valley Water Business Breakfast
24 November 2010
Coburg Principal Activity Centre
Stormwater Harvesting and Reuse Project

2. January 29, 2015 Yarra Valley Water Ltd 2

3. January 29, 2015 3Yarra Valley Water Ltd
Background - Population
 Victorian Government’s Melbourne 2030 Strategy:
• 5 M population for Melbourne by 2030
• 26 Principle Activity Centres (PAC) identified
• Coburg identified as a PAC
 Large amount of infill development expected:
• 4,000 plus new residential dwellings
• 65,000 m2
of commercial/retail floor space
• 1400 new permanent jobs plus 10,000 temporary jobs during
construction
• $900M worth of investment in local economy

4. January 29, 2015 5Yarra Valley Water Ltd
Background – Stormwater
 Increased urbanisation resulting in more stormwater runoff
 Further environmental degradation to waterways
• Nutrient loading
• Increased sedimentation
 Run off capable (in many cases) to supply incremental
increase in demand

5. January 29, 2015 6Yarra Valley Water Ltd
Background (Continued)
 New paradigm created:
• Harnessing alternative water supplies
• Sustainable principles
• Long term environmental benefits
 Council now pushing developers to apply ESD principles:
• Focus on reducing potable consumption
 Outcome - Stormwater harvesting

6. January 29, 2015 7Yarra Valley Water Ltd
YVW Coburg Proposal
 Harvest stormwater from two existing drains (MW and
Council) which run along the boundary of the proposed site
 Treat the stormwater to a very high recycled water standard
 Reticulate the recycled water to:
• All new houses/apartments within a designated
area for toilet flushing, laundry and outdoor uses
• Nearby public open spaces for irrigation

7. January 29, 2015 8Yarra Valley Water Ltd
Project Benefits
 213 ML/year of potable water substituted
 Much better stormwater quality than is currently the case:
• Stormwater is currently untreated
• Nitrogen – 22 % reduction
• Phosphorous – 42 % reduction
• Reduced sediment loading
 Reduced urban run off to Merri Creek – 21 %
 Recycled water available for open space irrigation

8. January 29, 2015 Yarra Valley Water Ltd 9
Harvesting Stormwater
Underground
Low Level
Tank
(7ML)
Diversion 2
Diversion 1
Urquhart Street Drain
(675mm)
Harding Street Drain
(2.4m x 1.2m)
Relocated
Tennis
Courts
RWTP
Underground
High Level
Tank
(7ML)
Third Pipe

9. January 29, 2015 Yarra Valley Water Ltd 10
Areas To Be Supplied With Recycled Water

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Underground tanks will use pre cast concrete culvert type sections
Proposed Underground Storage Tank Solution

11. January 29, 2015 Yarra Valley Water Ltd 12
A packaged ultra-filtration treatment plant system will be used to produce
Class A recycled water
Recycled Water Treatment Plant

12. January 29, 2015 13Yarra Valley Water Ltd
Moving Forward
 Federal Govt. grant of $6.6M approved for Project
 Detailed planning with Moreland Council in progress
 Design work for underground tanks/pumps etc underway
 Construction to start Aug 2011
 Pro Active Community & Stakeholder Consultation planned to
start January 2011