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Replacement Flows Project
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Hawkesbury-Nepean River
The Replacement Flows Project is Sydney's largest water recycling project. It 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.
How will the project work?
The Replacement Flows Project is designed to save drinking water and maintain river health. It will provide up to 18 billion litres of highly treated recycled water each year to the Hawkesbury-Nepean River system, replacing water currently released from Warragamba Dam to maintain environmental flows.
Wastewater from St Marys, Penrith and Quakers Hill Sewage Treatment Plants will be treated at a new recycled water plant next to St Marys Sewage Treatment Plant.
Sydney Water will build pipelines between the treatment plants to carry treated wastewater and recycled water. After treatment at St Marys, the highly treated recycled water will be pumped back into Penrith and released into the Hawkesbury-Nepean River below Penrith Weir.
Sydney Water will renew an existing pipeline between Quakers Hill and Seven Hills to carry concentrate from the recycled water plant. We will also build a pipeline from Seven Hills to Oatlands where it will link with the northern Sydney sewerage system.
Deerubbin WaterFutures Consortium, consisting of United Group Infrastructure, McConnell Dowell Constructors (Aust) and GE Water and Process Technologies will work with Sydney Water to deliver this major water recycling project.
What is the timetable for the project?
Construction started in June 2008 and is expected to take about two years. Highly treated recycled water from the St Marys Recycled Water Plant will flow to the Hawkesbury-Nepean River from 2010.
Sydney Water will provide regular updates throughout the project, and will work closely with affected communities to minimise construction impacts.
For further information
Please contact the Replacement Flows Project team for more information:
| Call | 1800 506 633 |
| recycledwater@sydneywater.com.au | |
| Write to | Replacement Flows Project P.O. Box 653 St Marys NSW 1790 |
