Log in
Information for developers
Sydney Water is responsible for the new Western Sydney Aerotropolis precincts' major stormwater infrastructure. This integrated water system will be the largest stormwater harvesting scheme in Australia. The information on this page will help developers applying for Section 73 Compliance Certificates.
Our responsibility
The NSW Government has appointed Sydney Water as the Regional Stormwater Authority in the Western Sydney Aerotropolis precincts, including the Mamre Road Precinct. We're responsible for delivering, managing and maintaining the regional stormwater network alongside our drinking water, wastewater and recycled water networks.
We're managing the Aerotropolis precincts' drainage networks in partnership with Penrith City and Liverpool City councils, which will manage the non-trunk drainage stormwater network within the roads and streets.
Design of stormwater works
If you are constructing works required by us, your design needs to be certified before you can start work. All design work should be consistent with the draft Stormwater scheme infrastructure design guideline: Western Sydney and its appendices:
Finalised plans for developers
We'll list the area's stormwater schemes for developers here as they're finalised. You can find out more about the Western Sydney Aerotropolis Stormwater project in Sydney Water Talk.
| Document | What it's about |
|---|---|
This policy applies to the Mamre Road and Aerotropolis initial precincts. It was prepared in consultation with industry and government stakeholders. It stipulates how developers will be reimbursed for the design and construction of regional stormwater infrastructure on behalf of Sydney Water in these precincts.* |
|
This attachment to the stormwater developer works policy lists the defined extent for stormwater infrastructure works for reimbursement. |
|
This addendum applies to the Engagement outcomes report on the Stormwater Developer Works Policy – Mamre Road and Aerotropolis available on Sydney Water Talk. |
|
Guiding principles for stormwater schemes with input from the development industry in 2022. |
|
Guidance on the calculation of Net Developable Area (NDA). Applies to development proposals in the Mamre Road and Aerotropolis initial precincts. |
|
Mamre Road precinct integrated stormwater scheme plan update |
View the Mamre Road precinct integrated stormwater scheme plan update. |
This map shows the regional stormwater and recycled water infrastructure required to service the Mamre Road precinct, which we will manage. |
|
Detail of the integrated stormwater scheme assets for the Mamre Road Precinct. Download the GIS and MUSIC model files to integrate into development applications in the precinct. |
|
Detail of the integrated stormwater scheme assets for the Mamre Road Precinct. Download these files to integrate into development applications in the precinct. |
* Sydney Water is nearing finalisation of the NSW Government approval process for funding of the Mamre Road Stormwater Scheme and is currently in the process of scheme planning for the Aerotropolis Initial Precincts. Once Development Services Plans have been registered with IPART for these areas, Sydney Water can enter into commercial agreements with developers and landowners for the funding of developer-delivered stormwater infrastructure. Consequently, any expenditure by a developer or landowner on stormwater infrastructure prior to finalisation of this approval process remains at their own risk. Until then, Sydney Water will not take ownership of, nor reimburse costs associated with, stormwater infrastructure or servicing.