The key purpose of this project is to deliver new wastewater infrastructure to service new dwellings in the area and meet future predicted demand.
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Meeting future demand
We're delivering new wastewater infrastructure to the South West Growth Area and parts of the Western Sydney Aerotropolis. It will service new dwellings in the area and meet predicted future demand.
About this project
The NSW Government has identified the Austral Leppington catchment as a key growth area. It sits along the eastern front of the South West Growth Area and parts of the Western Sydney Aerotropolis. This catchment will see substantial growth over the coming years, increasing from 2,300 dwellings in 2022 to around 38,000 dwellings by 2056.
To enable this growth and development, we're delivering a number of critical water and wastewater assets. These include the Bonds Creek Carrier Extension, which is a 1.4-kilometre extension to the recently completed wastewater network delivered by the Austral Leppington Wastewater Stage 3 Phase 1 project.
The Bonds Creek Carrier Extension will enable previously delivered wastewater infrastructure as part of the Austral Leppington project to be discharged to the Upper South Creek Advanced Water Recycling Centre at Kemps Creek. Expanding the wastewater network will further increase servicing capacity for the network consistent with planned objectives.
Benefits
When operational, this project will see the local wastewater network extended to service an additional 2,000 lots across the catchment.
Project timeline
2023: Preliminary investigations
Throughout 2023, survey and geotechnical investigations were undertaken along proposed concept alignment to inform the design process by identifying ground conditions and locating services.
2023: Review of Environmental Factors (REF)
The REF was completed in 2023. You can find it under 'Documents' on this page.
2024: Appoint delivery partner
In late 2024, we appointed Quickway as our delivery partner and began construction.
2024 to 2025: Construction
Construction started in late 2024 and completed in mid 2025.
2026: Operational
We expect the wastewater infrastructure to be operational by early 2026 in line with the commissioning requirements for the Upper South Creek Advanced Water Recycling Centre at Kemps Creek.
Project updates
09 September 2025
We’ve completed another key project for Western Sydney!
The Bonds Creek Carrier Extension is now complete. We’ve delivered this important project on time, on budget and ready to support future growth in Western Sydney.
Completed in partnership with Quickway, this 1.4-kilometre wastewater pipeline will:
- improve wastewater flow and servicing capacity to support new homes and businesses in the Austral Leppington Catchment
- provide more reliable services for over 2,000 new residential and business customers in Austral and Leppington
- strengthen sustainable infrastructure to support future growth
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02 July 2025
Our delivery partner, Quickway will be carrying out work on Tenth Avenue at Austral this weekend to keep the project moving.
When: Saturday 5 July and Sunday 6 July 2025 from 8am to 6pm.
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20 February 2025
Extended Saturday work hours, Tenth Avenue Austral
Our delivery partner Quickway is currently installing wastewater pipes between Eleventh Avenue and the corner of Fourth Avenue and Eighth Avenue, Austral.
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03 February 2025
We've started work on the Bonds Creek carrier extension
Sydney Water and our delivery partner Quickway have started construction on the Bonds Creek carrier extension.
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19 December 2024
Christmas shutdown
Our construction team will be taking a well-earned break over the Christmas and New Year period, with no works being carried out from Saturday 21 December 2024 until Monday 6 January 2025.
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18 November 2024
Aerotropolis Community drop-in session – Saturday 23 November
We hope you can join us to learn more about projects in the Western Sydney Aerotropolis and Mamre Road precincts.
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12 December 2023
Austral Leppington Wastewater Stage 3 Phase 1 – Servicing now available announcement from 12 December 2023
We're happy to announce the Austral Leppington Wastewater Stage 3 Phase 1 project is now ready to provide reliable water and wastewater services to the 1,700 lots allocated across Austral and Leppington.
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More information
Newsletters
Review of Environmental Factors
FAQs
In late 2024, Sydney Water appointed Quickway as our delivery partner, with construction to follow. The wastewater infrastructure is expected to be operational by 2026, in line with the commissioning requirements for the Upper South Creek Advanced Water Recycling Centre at Kemps Creek.
The Bonds Creek carrier extension will enable previously delivered wastewater infrastructure as part of the Austral Leppington project to be discharged to the Upper South Creek Advanced Water Recycling Centre at Kemps Creek. The expansion of the wastewater network will further increase servicing capacity for the network consistent with planned objectives.
Please refer to our interactive Growth Servicing Plan and map to see if your development falls within the servicing area for water and wastewater.
For owners of existing dwellings in the Stage 3 Phase 1 catchment, you have not been automatically allocated capacity. You will need to engage a listed water servicing coordinator, who can assist you with lodging an application to connect directly to our system.