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Lower South Creek Treatment Program

This project by Sydney Water has registered for a Design v1.2 IS Rating.


Sydney Water’s LSCTP i is adopting several innovative process technologies which will be a first for Australia, deliver significant sustainability outcomes, and hopefully help pave the way to a more sustainable water services industry.

As part of upgrades to two water recycling plants at St Marys and Quakers Hill, Sydney Water is introducing the transfer of biosolids from Quakers Hill to a regional biosolids hub at St Marys. This creates the scale and feasibility for a new anaerobic digestion plant at St Marys, with the flexibility to implement co-digestion. This will deliver both processing efficiencies, and in turn allow for a co-generation plant with significant energy recovery from biogas.

Paving the way for the adoption of these innovations was Sydney Water’s Lower South Creek Strategy in 2013, followed by the formation of the Lower South Creek Delivery Partner (WSP and UGL) in 2016, with Stantec and AA JV, a joint venture of AECOM and Aurecon, collaborating on design. 


  • Rating Type Waste
  • Registered Date December 2017
  • Practical Completion December 2020
  • Jurisdiction Australia
  • States NSW
  • Suburb Western Sydney
  • Assessor James Logie
  • Capital Value $300 Million
  • Other Stakeholders UGL Limited, WSP



To find out more about this project, visit the Sydney Water website.