St Marys Water Recycling Plant

• Project documentation and environmental assessment
• Project impact studies
• Fact sheets and maps

The St Marys Water Recycling Plant in the city's west is a key part of the NSW Government's Metropolitan Water Plan. It will play a critical role in increasing water recycling in the Sydney region to 70 billion litres a year by 2015.

The St Marys plant produces up to 18 billion litres of highly treated recycled water a year.

The water is used to help maintain the flow of the Hawkesbury-Nepean River. It will reduce the volume of nutrients in the river and mean more water will be available in Warragamba Dam for drinking.

How does the plant work?

Sydney Water has built pipelines to connect the Penrith, St Marys and Quakers Hill water recycling plants to the new water recycling plant at St Marys.

At St Marys, recycled water is further purified using ultrafiltration and reverse osmosis technology. The highly treated recycled water, which is similar in quality to drinking water, is then pumped to Penrith. It is released into the Hawkesbury-Nepean River below Penrith Weir.

Construction

Sydney Water worked with Deerubbin WaterFutures, a consortium of companies consisting of United Group Infrastructure, McConnell Dowell Constructors (Aust) and GE Water and Process Technologies to deliver this major water recycling project.

Tours

To book a free tour or for more information, call 1800 724 650 or go to Tours of Sydney Water facilities.