Securing our water supply – Quakers Hill to Prospect

Introduction of purified recycled water

We're investigating the introduction of purified recycled water (PRW) as an option for safe, rainfall-independent water. Together with desalination, PRW could support our dams in providing the world class water we enjoy every day.


About this project

Greater Sydney currently relies on rainfall for over 85% of its water supply, with the other 15% coming from desalination. With over 5 million customers, and an extra 2 million expected by 2050, challenges like climate change, drought and population growth mean we need to think about water differently.

The proposed introduction of PRW involves a new advanced water treatment facility at Quakers Hill producing PRW to be transferred to Prospect Reservoir. PRW added to the reservoir would mix with other water from Warragamba Dam and be treated again at the Prospect Water Filtration Plant.

The project involves:

  • expanding wastewater treatment capacity to service forecast growth
  • enhancing the quality of wastewater generated at Quakers Hill Water Resource Recovery Facility (WRRF) with advanced treatment processes
  • a new purified recycled water plant, including ultrafiltration, reverse osmosis, advanced oxidation (ultraviolet light and chemical oxidant) and chlorination
  • new pipeline(s) to transfer recycled water from Quakers Hill to Prospect Reservoir
  • infrastructure at Prospect Reservoir to add recycled water to the water supply.

We have published a scoping report on the project, available on the NSW planning portal. This report describes the project in detail, demonstrates alignment with government plans and strategies, and summarises expected impacts.

PRW is water recycled from industry and homes (including from kitchens, showers and toilets) that has been purified to meet strict Australian Guidelines for Water Recycling to supplement drinking water sources such as rivers and dams. It could provide up to 25% of Greater Sydney's water needs by 2056. Learn more about purified recycled water.

Benefits

PRW will reduce our reliance on rainfall as our primary water source. It will support population and housing growth, but has other benefits including healthier waterways, reduced likelihood of severe water restrictions, and more options for responding to drought, floods and climate change.


Project timeline

Greater Sydney Water Strategy
The NSW Government's Greater Sydney Water Strategy. We progressed investigations into climate resilient options, including desalination and PRW.
Project planning
This phase involved concept design and scoping, as well as community and stakeholder engagement to help develop the Environmental Impact Statement (EIS).
2025: EIS exhibition
From late 2025, the EIS will be published on the NSW Government Planning Portal.
Approvals
We will respond to EIS submissions and seek relevant government and regulatory approvals to proceed with the project, incorporating any EIS requirements.
Procurement and construction
If approved, we would begin procurement and construction of the scheme from 2028 to ensure we're ready to support growth when needed. This includes commissioning and verification of water quality monitoring and testing throughout the treatment process.
2032: Operational
From mid-2032, the Quakers Hill PRW scheme could be operational.


Project updates

11 December 2024
PRW pop-up display at Diwali Festival

As a part of several multicultural events planned for the project, we attended Cumberland City Council's Wentworthville Diwali Festival on Saturday 9 November alongside our Events Team.

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11 December 2024
Ryde Wharf Markets PRW pop-up display

We hosted a pop-up display at the Ryde Wharf Markets at Anderson Park on Sunday 27 October as part of our ongoing series of purified recycled water project engagement displays.

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11 December 2024
PRW Pop-up at Wentworth Point Night Markets

On Friday 4 October at the Wentworth Point Night Markets, we hosted a pop-up display to engage with the community on the proposed project for the introduction of purified recycled water.

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11 December 2024
Water is Life Youth Forum

During October, our team had the opportunity to work with our Community Education team to bring to life Sydney Water's very first 'Water is life Youth Forum': an initiative to help build bridges in water literacy gaps and inspire the next generation.

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09 December 2024
Research shows global purified recycled drinking water use to double by 2050

A research project led by the Water Services Association of Australia has mapped out the future of purified recycled water across the world, indicating that it could be consumed by more than 55 million people over the next 25 years.

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17 October 2024
Sydney Uni students interested to find out more about PRW

On 18 September 2024, the PRW project team, supported by staff from the PRW Discovery Centre, hosted an information stand at Sydney University's Chemical Engineering campus.

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17 October 2024
PRW public engagements at Parramatta Farmers Market

On 25 September 2024, the PRW project team engaged with members of the public at the weekly Farmers Market held in Centenary Square outside Parramatta Town Hall.

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16 October 2024
Translated project fact sheets

With over 5 million customers, and an extra 2 million expected by 2050 we understand how diverse our community is here in Greater Sydney.

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19 August 2024
PRW pop-up at Flavours of Blacktown

The PRW Project Team had a great afternoon at the Flavours of Blacktown event on Saturday 17 August.

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14 August 2024
Pop-up at Panthers vs Eels in Parramatta

Sydney Water hosted an information stand at the Parramatta Eels vs Penrith Panthers NRL game at CommBank Stadium in Parramatta on Friday evening, 9 August 2024.

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06 August 2024
Blacktown NAIDOC event

On Saturday 13 July 2024, Sydney Water attended Blacktown Council's free NAIDOC concert event. 

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11 July 2024
Webinar series: Our sustainable water future

Join our free webinar series with Jo Taranto from Good for the Hood to find out how a changing climate and an increased demand for our services means we need to think about water differently.

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