Our water & sewerage systems

Our water & sewerage systems

In this section you will learn how water is delivered to you and what happens to it after you've used it.

Supplying drinking water in South Australia is a big challenge. We live in one of the driest inhabited places on Earth and our population is scattered across a large area. While most of us think about the challenge of drinking water only during drought, it's been a big issue since settlement. Our rapidly developed expertise in managing and transporting water has played a vital part in the development of our state.

To get clean, healthy, high-quality water to your tap we take and treat water from a range of different sources. We then move this water to you through a complex, and extensive, network of pipes. Our operations span the length and breadth of South Australia.

While getting water to you is challenging, dealing with sewage is also complicated. Despite the complexity, we are proud that South Australia was the first state to install sewage treatment systems. And Adelaide was the first capital city to achieve secondary treatment of sewage.

Adelaide's sewerage system is made of more than 8700 km of pipes. Three major wastewater treatment plants at Bolivar, Glenelg and Christies Beach treat the water. We also have a smaller treatment plant at Aldinga.

Outside Adelaide's metropolitan area, there are 20 treatment plants. Of these, the only one that is privately operated is at Victor Harbor.

Find out how we treat your sewage here.


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  • Major faults

  • Underway

  • Swallowcliffe Rd
  • Davoren Park
  • 22/07/2017
  • Water On
  • Last Updated: 22/07/2017 06:29 PM - We are on-site responding to an incident in Davoren Park. Water should now be back on. Our crews may remain on site to perform further work. Traffic restrictions may also apply. Reference Number WO: 05921887.

  • See all major faults

  • Scheduled works

  • Underway
  • Guildford St
  • Clearview
  • 23/07/2017
  • Supply Interruption
  • Estimated start time (water off): 25/07/2017 09:00 AM
    Estimated restore time (water back on): 25/07/2017 04:00 PM

    We’re committed to improving your services and are undertaking maintenance work in Clearview. Water supply in the surrounding area may be impacted during the above times. Traffic restrictions may also apply.


  • See all scheduled works