Water savings in Melbourne's inner north
The City of Moreland, in the inner north of Melbourne, Australia, is one of Melbourne’s most populous municipalities. The area’s population is forecast to increase by more than 16% over the next 20 years.
Moreland City Council is focusing efforts on water sensitive urban design to achieve sustainable water use and improve the quality of stormwater that flows through to waterways.
In early 2012, Moreland City Council, in partnership with Melbourne Water and the Victorian Government delivered a major stormwater treatment and harvesting project at Glenroy's Sewell Reserve. The project is part of the Council’s Integrated Water Management Plan to reduce the use of potable mains water by 50 per cent by 2021.
Using eWater’s music modelling software, DesignFlow, in collaboration with GbLA, designed a stormwater treatment and harvesting system at the Sewell Reserve. music was used optimise the treatment area, pump rate and storage volume.
The stormwater harvesting system collects water from a Council drain running under Glenroy Road. The water passes through a sediment sump and litter trap before being directed to a large ‘rain garden’ system in the south-eastern corner of the Reserve. The system is an attractive landscaped basin where contaminants and sedimentation are removed from the water. Filtered water is pumped to two 383 kL tanks. The treated water is used to irrigate the adjacent sports oval.
The project will deliver a number of benefits, including:
- a reduction in potable water supply, with roughly five million litres of drinking water being saved annually, which is expected to reduce the Council’s annual water bill by up to $13,400
- an alternative water supply for irrigation to Sewell Reserve, providing Glenroy Sports Club with perennial watering
- waterway health benefits to Westbreen Creek, and ultimately Port Phillip Bay through the annual removal of over 5 ML surplus of stormwater flows, 6.5 tonnes of suspended solids, 12 kg of phosphorus and 82 kg of nitrogen.
Images courtesy of Moreland City Council