Case Study: Permeable Pipes

Ashgrove Subdivision, Regents Park


Ashgrove Residential Subdivision


City of Canterbury-Bankstown; Cumberland Council




Storm Consulting & Mirvac Homes


Kelly & Shepherd Pty Ltd


208 standard DN500 pipes

Bioretention project in Regents Park, NSW

The rezoning of the RAAF Stores Depot to a residential zoning created the opportunity for Mirvac to develop a cutting edge sustainable development at Regents Park. Regulator requirements included:

  • Compliance with BASIX – 40% reduction of potable water
  • Retention of 45% of nutrients (Auburn Council)
  • Alleviation of a stormwater system capacity problem through provision of detention and reduction of peak flows

WSUD measures incorporated in this development led to it winning several awards, including: 2008 Green Globe Award and the 2008 Stormwater Industry Association Award for Excellence in Stormwater Management.

The citation for the Green Globe Award (Industry: Water) reads:

“The Mirvac Group has broken new ground in the sustainability features of its Ashgrove Estate, an 11.4 hectare brownfield site in Sydney’s western suburbs.

The masterplan integrates a number of water sensitive urban design features, including onsite stormwater harvesting, detention and treatment. The water is reused for flushing residents’ toilets and public and private irrigation. This system has reduced potable water consumption by 10 million litres a year, or 45% of everyday use.

The outstanding design of Ashgrove Estate is the use of two hectares of public parkland as a ‘rainwater tank’ for the entire estate, with an underground, centralised water storage and treatment facility. By removing the need for individual rainwater tanks, Mirvac has improved the aesthetic value of each property and increased the land available for development within the Estate.”

Read more about this award winning WSUD project involving HydroCon pipes: SIA 2008 conference paper; eWater music case study.

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