North West Treatment Hub

North West Treatment Hub

Sydney Water announced plans to connect three water recovery facilities in North West Sydney to deliver the North West Treatment Hub. The full scope of the project includes:

  • construction of a 6.3-kilometre pipeline between Rouse Hill and Riverstone Water Resource Recovery facilities,
  • construction of a 10.2-kilometre pipeline between Castle Hill and Rouse Hill Water Resource Recovery facilities, and
  • upgrades to Castle Hill and Rouse Hill Water Resource Recovery facilities.

Key Dates

Dec 2023 Expected Construction Commencement
Dec 2025 Expected Construction Completion


Procuring Agency: Sydney Water
Procurement note:

The program will be delivered through an alliance delivery model.


Sep 2021 Sydney Water held an online industry briefing outlining the details of the program.
Jul 2022 Sydney Water released a Review of Environmental Factors for public consultation.
Nov 2022 Abergeldie had been selected to deliver the Castle Hill facility upgrades.
Dec 2022 Sydney Water published its Decision Report on the Review of Environmental Factors and recommended Sydney Water proceed with the proposal.
Jul 2023 Sydney Water prepared an updated environmental assessment on scope changes to the project regarding works around installing a high voltage power cable, changing the location of the high voltage switch room and removing the water from and filling in a lagoon no longer required on site.
Water & Sewerage
Procurement approach
Alliance |
New South Wales |
Project website
North West Treatment Hub
Media releases