Servicing growth & release areas

Houses being constructed next to road

We're planning new water and wastewater services for Sydney's south-west.

We're planning and building new water and wastewater infrastructure to enable development in the growth areas. This infrastructure is essential to allow development as outlined in the NSW Government’s A Plan for Growing Sydney.

NSW Planning and Environment is responsible for rezoning land and the sequence of land release in priority growth areas. They work in consultation with relevant local councils, NSW Government agencies and developers.

What we're doing

Lower South Creek is a $300 million program, which will provide new and upgraded wastewater infrastructure to support an additional 500,000 people in Sydney’s west by 2040.

The program started in July 2016 and will be delivered by ADAPT – a joint venture between UGL Limited and WSP Parsons Brinckerhoff. Construction work will begin in early 2017. It includes:
  • upgrading wastewater treatment facilities at Riverstone Wastewater Treatment Plant and St Marys Water Recycling Plant
  • building a new biological nutrient removal plant at the Quakers Hill Water Recycling Plant.

To learn more, contact our Community Relations Team by:

Lower South Creek Treatment Program
PO Box 84

The North West Priority Growth Area is within the boundaries of The Hills Shire Council, and Blacktown and Hawkesbury City Councils.


  • Location - Alex Avenue, Box Hill, Box Hill Industrial, Colebee, Cudgegong Road, Marsden Park, Marsden Park Industrial, Marsden Park North, North Kellyville, Riverstone, Riverstone East, Riverstone West, Schofields, Shanes Park, Vineyard and West Schofields
  • Timeframe - in stages between 2015 and 2025

We're planning new water and wastewater infrastructure to service the remaining North West Priority Growth Area precincts.

Learn more about the North West Priority Growth Area.

Packages 3B, 3C & 3D

  • Location - Alex Avenue, Area 20, Box Hill, Box Hill Industrial, Riverstone East, Riverstone West, Schofields, Vineyard and West Schofields
  • Timeframe - mid 2016 to end 2019
We're planning new water and wastewater services.
Learn more about the Packages 3B, 3C & 3D.

Marsden Park wastewater

  • Location - Marsden Park
  • Timeframe - in stages between 2016 and 2019
We're planning new wastewater infrastructure to service the Marsden Park and Marsden Park Industrial precincts.

Learn more about Marsden Park wastewater services.

The South West Growth Centre is within the boundaries of three local government areas -  Liverpool, Camden and Campbelltown.

Edmondson Park precinct

  • Location - Edmondson Park and Ingleburn
  • Timeframe - trunk water and wastewater services will be completed by the end of 2017

Learn more about the Edmondson Park precinct.

Oran Park, South Catherine Fields and Turner Road precincts

  • Location - Oran Park
  • Timeframe - in stages between 2009 and 2030

We're planning new water and wastewater infrastructure.

Learn more about the Oran Park, South Catherine Fields and Turner Road precincts

Austral and Leppington precincts

  • Location - Leppington, East Leppington and Denham Court
  • Timeframe - in stages between 2015 and 2022

We're building new water and wastewater infrastructure. 

Learn more about the Austral and Leppington precincts

Dry grassy field with barbed wire fence

Land will be developed to meet future population growth.

The West Dapto Urban Release Area and Adjacent Growth Areas are about 15 kilometres south west of Wollongong. They're within Wollongong and Shellharbour City Council areas.

New water and wastewater infrastructure will be needed for about 30,000 homes and about 500 hectares of non-residential development in the Illawarra region.

Dunmore (Shell Heights) Urban Release Area

  • Location - Dunmore
  • Timeframe - in stages between 2017 and 2020 

We're planning new water and wastewater infrastructure to service about 500 new dwellings at the Dunmore (Shell Heights) Urban Release Area in the Illawarra region.
Learn more about the Dunmore (Shell Heights) Urban Release Area.

West Dapto Urban Release Area

  • Location - Tallawarra Lands, Huntley, Kembla Grange, Sheaffes/Wongawilli, West Horsley, Cleveland, Avondale, Tullimbar Village, Calderwood, Calderwood Valley and Yallah/Marshall Mount
  • Timeframe - in stages between 2014 and 2048

Learn more about the West Dapto Urban Release Area and each stage of the project:

Green Square Stormwater Drain Project

  • Location - Green Square and Alexandria areas
  • Timeframe - construction started in May 2015 and is expected to be completed by mid 2018

We're building a new stormwater drain to reduce the risk of flooding in Green Square Town Centre.

This work is being done in partnership with City of Sydney Council.

Learn more about Green Square Stormwater Drain Project.

Have your say about our projects

Female staff member talking to a man next to a metal fence

Your feedback is important to us.

Visit Sydney Water Talk to learn more about our projects and provide feedback.