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5O years of WSUD in Salisbury

December 15, 2017

Extract – journal article:  Fifty years of water sensitive urban design, Salisbury, South Australia, Frontiers in Environment, Science and Engineering by CSIRO Land and Water

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Over a period of 50 years, as the City of Salisbury has evolved from a small country village into a major suburban centre, it has adopted a thoughtful approach to adapting and maximising the benefits for urban amenities from the changes that have occurred in its water cycle following urbanisation.

As a national leader in stormwater harvesting and re-use, the City of Salisbury, through its water business arm Salisbury Water, now provides 5 gigalitres of non-potable water to industry and for greening of community open space, through a vast network of nine wetlands and biofilters and associated managed aquifer recharge sites.

Parafield wetland, City of Salisbury

Unity Park, City of Salisbury

These installations hosted a number of applied research projects addressing well configuration, water quality, reliability and economics, and facilitated the evaluation of its system as a potential potable water source. The evaluation by CSIRO showed that while untreated stormwater contained contaminants, subsurface storage and end-use controls were sufficient to make recovered water safe for public open space irrigation, and with chlorination, acceptable for third pipe supplies. Drinking water quality could be achieved by adding microfiltration, disinfection with UV and chlorination. The costs that would need to be expended to achieve drinking water safety standards were found to be considerably less than the cost of establishing dual pipe distribution systems.

Acknowledgements: NRM Rain Research & Innovation Network

Greenfields, City of Salisbury

Parafield MAR, City of Salisbury

Springbank Waters, Burton, City of Salisbury

Images: City of Salisbury

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