Upper South Creek Networks Program

Share Upper South Creek Networks Program on Facebook Share Upper South Creek Networks Program on Twitter Share Upper South Creek Networks Program on Linkedin Email Upper South Creek Networks Program link

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 90,000 new dwellings and 250,000 jobs will be in the Upper South Creek 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, Sydney Water is 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.

The Upper South Creek Networks Program will deliver over 96km of wastewater pipelines and 9 pumping stations to service development within the Upper South Creek precinct and transfer flows to the AWRC.

The Upper South Creek Networks Program is a group of five wastewater infrastructure projects. The five projects are:

  • Badgerys Creek
  • South Creek
  • Thompsons Creek
  • Cosgroves & Agribusiness
  • Lowes 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.

To find more information about what is happening in your catchment, 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 90,000 new dwellings and 250,000 jobs will be in the Upper South Creek 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, Sydney Water is 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.

The Upper South Creek Networks Program will deliver over 96km of wastewater pipelines and 9 pumping stations to service development within the Upper South Creek precinct and transfer flows to the AWRC.

The Upper South Creek Networks Program is a group of five wastewater infrastructure projects. The five projects are:

  • Badgerys Creek
  • South Creek
  • Thompsons Creek
  • Cosgroves & Agribusiness
  • Lowes 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.

To find more information about what is happening in your catchment, please see the updates in the newsfeed below or contact the Community Engagement Team.

More updates will be published as the project progresses.









  • Lowes Creek Project Update- June 2024

    Share Lowes Creek Project Update- June 2024 on Facebook Share Lowes Creek Project Update- June 2024 on Twitter Share Lowes Creek Project Update- June 2024 on Linkedin Email Lowes Creek Project Update- June 2024 link

    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.

    Share Community Information Session 4 May 2024 - Aerotropolis and Mamre Rd Precincts. on Facebook Share Community Information Session 4 May 2024 - Aerotropolis and Mamre Rd Precincts. on Twitter Share Community Information Session 4 May 2024 - Aerotropolis and Mamre Rd Precincts. on Linkedin Email Community Information Session 4 May 2024 - Aerotropolis and Mamre Rd Precincts. link

    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.

    Share Cosgroves Creek - Archaeological and Ecological site assessments. on Facebook Share Cosgroves Creek - Archaeological and Ecological site assessments. on Twitter Share Cosgroves Creek - Archaeological and Ecological site assessments. on Linkedin Email Cosgroves Creek - Archaeological and Ecological site assessments. link

    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.



  • Thompsons Creek and South Creek Project Update March 2024

    Share Thompsons Creek and South Creek Project Update March 2024 on Facebook Share Thompsons Creek and South Creek Project Update March 2024 on Twitter Share Thompsons Creek and South Creek Project Update March 2024 on Linkedin Email Thompsons Creek and South Creek Project Update March 2024 link

    To support the significant growth within the next few decades, our project team has been working on designing the new wastewater infrastructure for the Thompsons Creek and South Creek Precinct. The design for the Thompsons Creek and South Creek Precinct has now been completed and is shown in the map saved here: https://www.sydneywatertalk.com.au/84369/widgets/427024/documents/281148

    We have also distributed a newsletter to the community within the Thompsons Creek and South Creek Precinct to provide an update on the project. To read the newsletter please click follow this link: https://www.sydneywatertalk.com.au/84369/widgets/427024/documents/281150

    We are now in the process of scheduling meetings with the landowners that will be affected by the wastewater pipe alignment in the Precinct. The community engagement team will contact these landowners directly by phone, email and/or letter to book a one-on-one meeting over the next week.

    If you have any questions or would like to find out more about the project, you can contact our community engagement team on 1800 010 083 or email us on uscnetworks@sydneywater.com.au

  • Cosgroves Creek Project Update March 2024

    Share Cosgroves Creek Project Update March 2024 on Facebook Share Cosgroves Creek Project Update March 2024 on Twitter Share Cosgroves Creek Project Update March 2024 on Linkedin Email Cosgroves Creek Project Update March 2024 link

    To support the significant growth within the next few decades, our project team has been working on designing the new wastewater infrastructure for the Cosgroves Creek Precinct. The design for the Cosgroves Creek Precinct has now been completed and is shown in the map saved here: https://www.sydneywatertalk.com.au/84369/widgets/427024/documents/281147

    We have also distributed a newsletter to the community within the Cosgroves and Agribusiness Precinct to provide an update on the project. To read the newsletter please click follow this link: https://www.sydneywatertalk.com.au/84369/widgets/427024/documents/281149

    We are now in the process of scheduling meetings with the landowners that will be affected by the wastewater pipe alignment in the Precinct. The community engagement team will contact these landowners directly by phone, email and/or letter to book a one-on-one meeting over the next week.

    If you have any questions or would like to find out more about the project, you can contact our community engagement team on 1800 010 083 or email us on uscnetworks@sydneywater.com.au

  • Lowes Creek Site Walk Assessment

    Share Lowes Creek Site Walk Assessment on Facebook Share Lowes Creek Site Walk Assessment on Twitter Share Lowes Creek Site Walk Assessment on Linkedin Email Lowes Creek Site Walk Assessment link

    We have now started the early design for the new wastewater infrastructure for the Lowes Creek project. The Lowes Creek wastewater project will service Lowes Creek Merryland precinct, parts of Oran Park, Catherine Fields, Pondicherry and Catherine Fields North. This new wastewater pipeline and supporting infrastructure is expected to be constructed by 2028.

    In January 2024, we informed the community that our team would be in the area doing a site walk assessment to better understand the local landscape, vegetation, creek and ground conditions. We are pleased to inform you that our site walk assessment for the Lowes Creek project was successfully completed on 14 February 2024. We thank the community and landowners for the cooperation in allowing us access to their property.

    The team will now assess the information collected to inform the next stage of the design. We are committed to keeping you updated on the progress of the Lowes Creek project and we look forward to continuing working together.

    If you have any questions or would like to speak to us, our community engagement team can be contacted on 1800 010 083 or via email  uscnetworks@sydneywater.com.au   

  • Lowes Creek project update

    Share Lowes Creek project update on Facebook Share Lowes Creek project update on Twitter Share Lowes Creek project update on Linkedin Email Lowes Creek project update link

    Our project team at Sydney Water is starting the early design for the wastewater pipeline route for the Lowes Creek project. To help inform the early design we will be completing site walks to assess and evaluate ground condition. It will also help us identify any potential issue or concerns that may impact the proposed infrastructure, environment and community. At the end of the early design stage the team will develop a preferred option and prepare preliminary designs. 

    During the site walk investigation, the following information may be gathered:

    • Evaluate area condition- carefully observe and evaluate the overall condition of the area including landscape, structures, creek banks, roads and other important infrastructure that may be present. This will help us understand the current state of the area and identify potential issues or concerns.

    • Assess ground condition- our team will assess the surrounding ground condition to better understand the stability and suitability of the terrain. This involves evaluating soil condition/type, drainage, and other potential challenges that may need to be addressed.

    • Terrain evaluation- we will assess the terrain to gather information on its topography, slope and natural features that may impact the project.

    At this stage we do not expect that we will need to access your property. If we do need access, we will contact you over the couple of few weeks. The site walk inspections will be done through February 2024. To understand where our Lowes Creek project is located, please refer to the Upper South Creek Networks Program Catchment map above.

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

  • Thompsons Creek and South Creek  - Archaeological and Ecological field inspections.

    Share Thompsons Creek and South Creek  - Archaeological and Ecological field inspections. on Facebook Share Thompsons Creek and South Creek  - Archaeological and Ecological field inspections. on Twitter Share Thompsons Creek and South Creek  - Archaeological and Ecological field inspections. on Linkedin Email Thompsons Creek and South Creek  - Archaeological and Ecological field inspections. link

    From late January 2024, our team of Ecologists and Archaeologists will start site assessments along the proposed new wastewater pipe alignment in the Thompsons and South Creek Catchments. The aim of the assessment is to inform the Review of Environmental Factors (REF). These assessments will help us to identify potential environmental and archaeological constraints, develop mitigation measures and inform the design.

    The Ecological work consists of:  

    • Identifying and recording several types of animals and plant communities
    • Taking measurements in multiple locations around grassy areas and near trees
    • Identifying and recording specific types of plants
    • 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 work consists of: 

    • Walking across an area recording items of archaeological significance
    • Digging by hand 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.

    The Archaeological and Ecological field inspections will start late January 2024 and are expected to be completed by late February 2024.

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


  • What’s been happening in the Thompsons Creek and South Creek Catchments?

    Share What’s been happening in the Thompsons Creek and South Creek Catchments? on Facebook Share What’s been happening in the Thompsons Creek and South Creek Catchments? on Twitter Share What’s been happening in the Thompsons Creek and South Creek Catchments? on Linkedin Email What’s been happening in the Thompsons Creek and South Creek Catchments? link

    Since April 2023, we have been working on developing the concept design for the new wastewater infrastructure in the Thompsons Creek and South Creek Catchments. The concept design for the Thompsons Creek and South Creek is nearing 90% completion.

    The development of the concept design has included site investigations and desktop studies such as:

    • Geotechnical testing: to get an understanding of the soils in the area to determine where suitable locations for building the new infrastructure are.
    • Groundwater testing: to understand potential issues that may impact on the design, the construction and the cost of the pipeline.
    • Cultural Heritage Assessment: to find out if there are any known Aboriginal Cultural Heritage sites near the project area.
    • Ecology Assessments: to identify any areas of significant or endangered native vegetation or animal habitat that will be impacted by the new infrastructure.

    The above assessments have helped us to inform the design, develop mitigation measures and identify potential issues. Where the investigations identified a potential issue, the concept design was updated either to avoid the areas or develop mitigation measures to reduce any issues that might arise.

    We will keep the community informed as we finalise the concept design and move onto next phase of the project.

  • What’s been happening in the Cosgroves Creek and Agribusiness Catchment?

    Share What’s been happening in the Cosgroves Creek and Agribusiness Catchment? on Facebook Share What’s been happening in the Cosgroves Creek and Agribusiness Catchment? on Twitter Share What’s been happening in the Cosgroves Creek and Agribusiness Catchment? on Linkedin Email What’s been happening in the Cosgroves Creek and Agribusiness Catchment? link

    Since April 2023, we have been working on developing the concept design for the new wastewater infrastructure in the Cosgroves and Agribusiness Catchment. The concept design for Cosgroves Creek is at 90% completion and the concept design for the Agribusiness Catchment will be completed early 2024.

    The development of the concept design has included site investigations and desktop studies such as:

    • Geotechnical testing: to get an understanding of the soils in the area to determine where suitable locations for building the new infrastructure are.
    • Groundwater testing: to understand potential issues that may impact on the design, the construction and the cost of the pipeline.
    • Ecology Assessments: to identify any areas of significant or endangered native vegetation or animal habitat that will be impacted by the new infrastructure.

    The above assessments have helped us to identify potential issues, develop mitigation measures and inform the design. Where the investigations identified a potential issue, the concept design was updated to either to avoid the areas or develop mitigation measures to reduce any issues that might arise.

    We will keep the community informed as we finalise the concept design and move onto next phase of the project.

Page last updated: 19 Jun 2024, 09:48 AM