NSW Government - Water for Life ...

Currently, the best opportunity for large scale water recycling is in new suburbs where recycled water pipelines can be constructed at the same time as drinking water mains. This is often referred to as dual reticulation, meaning two sets of pipes - one for drinking water and one for recycled water.

Already Sydney has Australia’s largest residential recycled scheme at Rouse Hill. In addition to this, homes are also being serviced by dual reticulation at Homebush Bay and two new schemes are under construction at Hoxton Park and Ropes Crossing at St Marys.

As part of the 2006 Metropolitan Water Plan, the Western Sydney Recycled Water Initiative will also provide recycled water via dual reticulation to all 160,000 new homes in western Sydney's new suburbs, as well as for agriculture, industry and putting water back into rivers.

See - NSW Government - Water for Life.