Northwest Drinking Water Supply

Improving water supply

We're working to support growing communities and enable new housing while protecting public health, caring for waterways and the environment, and continuing to provide realiable water services and water security for current and future customers.


About this project

To help meet future demand, Sydney Water is progressing the Northwest Drinking Water Supply (NDWS) Project. The project will help secure drinking water services for communities across Blacktown, The Hills Shire, Cumberland, City of Parramatta, Hornsby and Hawkesbury, supporting future growth and development. 

We are investigating options between Prospect Reservoir and Parklea Reservoir to help meet future demand and maintain water security. The project is currently in the development phase, with investigations underway to inform the preferred long-term solution. 

Benefits

  • Reliable water supply with reduced risk of interruptions and better service for homes and businesses
  • Support for growth by ensuring water for new housing and communities
  • Future-ready infrastructure with modern systems that can handle demand for decades

Project timeline

2026: Preferred option and design development
2027: Contractor procurement 
2028: Construction begins (enabling works)
2031: Construction completion and commissioning