Stormwater Harvesting

DeWinton Park

The DeWinton Park Stormwater Harvesting & Re-Use System Project involved the collection of stormwater for storage and subsequent use for irrigation at DeWinton Park in Rosanna.

The project was technically challenging. Below is a brief on the project:

• Water is collected from a live 2.4m diameter barrel drain buried 5m deep in the middle of a busy side road in Rosanna
• This water passes through a 450mm pipe which was bored underneath a 1150mm Melbourne Water main and a 300mm Yarra Valley Water main into an 8m deep pit
• From this pit, it is pumped through a gross pollutant trap (GPT) and then gravity fed into a 1.2 megalitre underground tank where it is stored until needed
• This tank comprises of a combination of 20mm aggregate and moulded plastic modular units. Excavation of this tank involved the removal of approx 4000m3 of earth
• A pavement was placed back on top of the tank and with the exception of some pit lids and a small pump house, the site has returned to being a carpark
• As required, the water is sucked out of the tank and passed through a media filter and UV filter to treat it prior to being used for irrigation

WINNER - Excellence in Infrastructure at the 2014 Stormwater Victoria, Awards for Excellence