Upper South Creek Networks (USCN) Program

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Greater Sydney’s population is forecast to reach 8 million people over the next 40 years, with approximately half of those people expected to be living in the Western Sydney.

We are investing now to transform and integrate our water, wastewater, stormwater and recycled water systems to ensure we can continue to provide safe, reliable and affordable services to customers as the region continues to grow. This will help respond to the effects of climate change and ensure the health and amenity of Greater Sydney’s beautiful waterways.

By 2056, it is estimated 130,000 new dwellings and 217,000 jobs will be in the Upper South Creek (USC) Catchment region. The Upper South Creek Catchment will also include innovative precincts focused on advanced manufacturing, technology, research, training and education, freight and logistics, agribusiness and mixed-use development.

To support the growth in the region, we are delivering wastewater infrastructure to the western Sydney. This will ensure a resilient, reliable water supply and protect the environment in the Upper South Creek area surrounding the new Western Sydney International Airport.

We will deliver over 115km of wastewater pipelines and 11 pumping stations to service development within the Upper South Creek Catchment, and transfer flows to the Advanced Water Recycling Centre (AWRC).

The Upper South Creek Networks (USCN) Program will provide wastewater infrastructure to the eight precincts in the USC Catchment. The eight precincts are:

  • Agribusiness
  • Austral Leppington
  • Badgerys Creek
  • Cosgroves Creek
  • Lowes Creek
  • Mamre Road
  • South Creek
  • Thompsons Creek.

Sydney Water in partnership with CreekConnect will deliver the first stage of the USCN Program. The first stage includes finalising the design and construction of:

  • Cosgroves Creek Stage 1
  • Thompsons Creek Stage 1
  • Badgerys Creek Stage 2
  • South Creek.

To ensure we are ready to meet future growth and development, we are:

  • working with government agencies to meet growth forecasts and ensure we deliver the right services at the right time
  • protecting public health and the environment by ensuring the community can access safe and reliable wastewater services
  • taking steps to minimise any environmental impacts
  • working with the community and stakeholders throughout the project and keep them informed.

For more information, please see the updates in the newsfeed below or contact the Community Engagement Team.

More updates will be published as the project progresses.

Greater Sydney’s population is forecast to reach 8 million people over the next 40 years, with approximately half of those people expected to be living in the Western Sydney.

We are investing now to transform and integrate our water, wastewater, stormwater and recycled water systems to ensure we can continue to provide safe, reliable and affordable services to customers as the region continues to grow. This will help respond to the effects of climate change and ensure the health and amenity of Greater Sydney’s beautiful waterways.

By 2056, it is estimated 130,000 new dwellings and 217,000 jobs will be in the Upper South Creek (USC) Catchment region. The Upper South Creek Catchment will also include innovative precincts focused on advanced manufacturing, technology, research, training and education, freight and logistics, agribusiness and mixed-use development.

To support the growth in the region, we are delivering wastewater infrastructure to the western Sydney. This will ensure a resilient, reliable water supply and protect the environment in the Upper South Creek area surrounding the new Western Sydney International Airport.

We will deliver over 115km of wastewater pipelines and 11 pumping stations to service development within the Upper South Creek Catchment, and transfer flows to the Advanced Water Recycling Centre (AWRC).

The Upper South Creek Networks (USCN) Program will provide wastewater infrastructure to the eight precincts in the USC Catchment. The eight precincts are:

  • Agribusiness
  • Austral Leppington
  • Badgerys Creek
  • Cosgroves Creek
  • Lowes Creek
  • Mamre Road
  • South Creek
  • Thompsons Creek.

Sydney Water in partnership with CreekConnect will deliver the first stage of the USCN Program. The first stage includes finalising the design and construction of:

  • Cosgroves Creek Stage 1
  • Thompsons Creek Stage 1
  • Badgerys Creek Stage 2
  • South Creek.

To ensure we are ready to meet future growth and development, we are:

  • working with government agencies to meet growth forecasts and ensure we deliver the right services at the right time
  • protecting public health and the environment by ensuring the community can access safe and reliable wastewater services
  • taking steps to minimise any environmental impacts
  • working with the community and stakeholders throughout the project and keep them informed.

For more information, please see the updates in the newsfeed below or contact the Community Engagement Team.

More updates will be published as the project progresses.

  • Austral Leppington Precinct – site investigations

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    We are currently in the early design phase of Austral Leppington (previously known as Kemps Creek Carrier Extension project) which is part of the USCN Program.

    The new wastewater pipeline will extend from Austral to the south, towards Camden.

    To assist in our planning, the project team will be carrying out site investigations to confirm existing ground levels and conditions and identify existing underground services.

    Investigation activities will include:

    • carrying out topographical survey

    • underground service locating

    • drilling geotechnical boreholes

    • digging test pits.

    Site investigation activities will start in March 2025. If we need to enter your property, our Community Engagement Team will contact you directly to discuss access.

    If you would like more information, please contact our community engagement team.

  • Cosgroves Creek and South Creek Precincts - site investigations

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    Our team are currently undertaking site investigations to assess ground conditions across the Cosgrove Creek and South Creek Precincts.

    Activities will include:

    • carrying out topographical survey

    • underground service locating

    • drilling geotechnical boreholes

    • digging test pits.

    Site investigations will be ongoing in Cosgroves Creek and South Creek until late March 2025. If we need to enter your property, our Community Engagement Team will contact you directly to discuss access.

    The investigations will help us finalise our designs before we begin construction in late 2025.

    If you would like more information, please contact our community engagement team.



  • Thompsons Creek and South Creek Precinct - Review of Environmental Factors (REF) and Review of Environmental Factors Addendum (REFA)

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    As we look towards the future, the landscape of western Sydney is set to transform. Greater Sydney’s population is forecast to reach 8 million people over the next 40 years, with a significant number of people expected to live and work in the area.  

    We are constructing new wastewater infrastructure in the Thompsons Creek and South Creek Precincts, which is part of the Upper South Creek Networks (USCN) Program. This Program will ensure we can provide resilient and reliable wastewater services and meet the demands of a growing community in western Sydney. 

    We have prepared a Review of Environmental Factors (REF) and Review of Environmental Factors Addendum (REFA) for the Thompsons Creek and South Creek Precinct, guided by the Environmental Planning and Assessment Act 1979. The REF and REFA assesses and outlines measures to avoid, minimise and mitigate potential environmental impacts, including, but not limited to, noise, traffic, biodiversity and heritage.

    To view and download the Thompsons Creek and South Creek Precinct REF, please click here. 

    To view and download the Thompsons Creek and South Creek Precinct REFA, please click here.

  • Badgerys Creek Precinct - Review of Environmental Factors (REF)

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    As we look towards the future, the landscape of western Sydney is set to transform. Greater Sydney’s population is forecast to reach 8 million people over the next 40 years, with a significant number of people expected to live and work in the area.  

    We are constructing new wastewater infrastructure in the Badgerys Creek Precinct, which is part of the Upper South Creek Networks (USCN) Program. This Program will ensure we can provide resilient and reliable wastewater services and meet the demands of a growing community in western Sydney. 

    We have prepared a Review of Environmental Factors (REF) for the Badgerys Creek Precinct, guided by the Environmental Planning and Assessment Act 1979. The REF assesses and outlines measures to avoid, minimise and mitigate potential environmental impacts, including, but not limited to, noise, traffic, biodiversity and heritage.

    To view and download the Badgerys Creek Precinct REF, please click here. 

  • End of year shutdown period

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    Dear Community members,

    We want to inform you that our Upper South Creek Networks Program team will be taking a well-deserved break for the Christmas and New Year holidays. During this time, there will be no work taking place on the project. 

    Our break will begin on Friday 20 December 2024, and we will return to work on Monday 6 January 2025. 

    If you have an enquiry about the Upper South Creek Networks Program, please call our Community Engagement Team on 1800 010 083.

    For emergencies, please contact 13 20 90.

    We appreciate your understanding and support over the last 12 months. Wishing everyone a joyful and safe Christmas break and have a happy New Year!

    Thank you 

  • Aerotropolis and Mamre Road Precincts Community Information Drop-in Session

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    We hope you can join us to learn more about projects in the Western Sydney Aerotropolis and Mamre Road precinct.

    NSW Government agencies, as well as Penrith and Liverpool Council, will be in attendance to provide information and answer questions about developments in the Western Sydney Aerotropolis and Mamre Road precincts.

    Event Details

    Date: 23 November 2024

    Time: 10:00am – 1:00pm

    Location: Bringelly Community Centre

    Address: 5 Greendale Road, Bringelly

    Parking: Available on site


    More information can be found here

  • USCN contract award

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    We are excited to announce that we have appointed Jacobs and Seymour Whyte (JSW) joint venture to provide engineering, procurement and construction management services to drive a coordinated and sustainable approach to the delivery of the Upper South Creek Networks (USCN) Program.

    Jacobs and Seymour Whyte have had decades of experience delivering complex infrastructure projects, both globally and locally in western Sydney. The new joint venture is called CreekConnect highlighting the project’s key purpose of connecting the five precincts to the new Advance Water Recycling Centre (AWRC) and connect communities to world-class wastewater services.

    Sydney Water and CreekConnect will work together to ensure the work is delivered safely while minimising impacts on the environment and the community.

    Over the next few months, Sydney Water and CreekConnect will be conducting site walks, geotechnical, ecological and Aboriginal heritage assessments to help the project team finalise the design and plan for construction of the new wastewater infrastructure.

    There may be times when we will need to access your property to carry out these assessments. If that happens, we will contact you directly to discuss the details and set up a convenient time.

    If you have any questions or would like to find out more, please contact our community engagement team.

    To read the latest newsletter distributed, please follow the link below.

    USCN October 2024 newsletter


    Sydney Water, Vinci, Jacobs and Seymour Whyte team





  • Lowes Creek Project Update - June 2024

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    Our team recently completed an environmental assessment to assess and evaluate ground conditions. The assessment involved walking on private and public land taking photographs of the landscape, vegetation, creek bed and ground condition.

    Next Steps

    Over the next couple of months, we will be bringing our delivery partner onboard. They will work alongside us to design and deliver this new wastewater infrastructure. During the design period we will need to complete additional investigation work. We may require access to your property to complete geotechnical investigations, which may include boreholes, test pits, groundwater testing, sampling and measuring. If we need access to your property, we will contact you.

    We are committed to keeping the community informed throughout the life of the project via regular newsletters, community drop-in sessions and updates on our website. If you have any questions or would like to speak to us, our community engagement team.

    To read the latest notification distributed, please follow the link below. https://www.sydneywatertalk.com.au/84369/widgets/427024/documents/288348


  • Community Information Session 4 May 2024 - Aerotropolis and Mamre Rd Precincts.

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    We are pleased to announce Sydney Water, together with the Aerotropolis Independent Community Commissioner Roberta Ryan, is hosting a community drop-in session between 10:00am to 1:00pm on 4 May 2024 at Bringelly Community Centre.

    NSW Government agencies, as well as Penrith and Liverpool council, will be in attendance to provide information and answer questions about developments in the Western Sydney Aerotropolis and Mamre Road precincts.

    Please refer to the attached invitation flyer for further details and a list of agencies attending.

    We look forward to seeing you there.

  • Cosgroves Creek - Archaeological and Ecological site assessments.

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    From early May 2024, our team of Ecologists and Archaeologists will start site assessments along the proposed wastewater pipeline alignment in the Cosgroves Creek precinct. This assessment will inform the Review of Environmental Factors (REF) and help us to identify potential environmental and archaeological constraints, develop mitigation measures and inform the design.

    The Ecological assessment consists of:  

    • Identifying and recording several types of animals and plant communities. 

    • Taking measurements in multiple locations around grassy areas and near trees. 

    • Recording of areas with high biodiversity. 

    • Identifying and recording trees that provide habitats for wildlife. 

    • Assessing and monitoring of environment around creeks and/or ponds. 

     

    The Archaeologist assessment consists of: 

    •   Walking across an area recording items of archaeological significance if found. 

    • Digging using hand tools to identify any items found. If we need to dig by hand, we will backfill immediately after inspection. 

    • Using cameras, notebooks and measuring tools. 

    You may notice our team driving through your area doing these assessments on public roads and reserves. If we need to enter your property, our Community Engagement Team will contact you directly to discuss access.

    If you would like more information, please contact our community engagement team.



Page last updated: 19 Feb 2025, 08:23 AM