South West

We have been working to understand the water needs for the towns we supply in the South West to 2060.

Summaries of our regional water and wastewater schemes are currently being updated and will be available shortly.

We have completed a major planning study, Water Forever: South West, to provide a strategic framework for a sustainable and more climate-resilient water supply in the long-term.

This requires a balance of reducing water use, increasing the amount of water we recycle and developing new water sources.

The report features a detailed analysis and assessment on how to address future drinking water demand in a drying climate. It was developed with significant input from councils, industry, government agencies and communities throughout the South West over an 18 month period.

We are committed to continuing our engagement with South West communities on water issues that affect them. This includes opportunities for input into plans like Water Forever: South West, educating the community on how to reduce water use and engaging with local communities about new and improved water and wastewater infrastructure. 

Read the full report

Read the executive summary

Population growth, limited water resources and growing demand from industry and agriculture present major challenges for us in the South West region.

We service most of the towns in the South West through independent local dam and groundwater sources.

Bunbury and Busselton and serviced by independent water service providers – Aqwest and Busselton Water Corporation.

Securing drinking water supplies

Dams will continue to be important water sources in the region, however our drying climate means we cannot rely on them alone in the future.

We are:

  • expanding Margaret River and Augusta water supply schemes – this includes improving source capacity, and upgrading water treatment, storage and pipe networks
  • planning a new groundwater source for Pemberton
  • replacing deep bores that supply Capel
  • upgrading the Warren-Blackwood Regional Water Supply Scheme and connecting to other towns like Kirup 
  • linking Stirling Dam to Harris Dam - the main source for Collie and 30 towns in the Upper Great Southern.

Improving our wastewater services

We have completed a major upgrade to the Collie Wastewater Treatment Plant and we have commissioned a new Wastewater Treatment Plant at Pemberton.

Bunbury, Margaret River and Bridgetown wastewater systems will receive major upgrades to meet population growth and industrial development.

Brunswick and Waroona wastewater systems will receive minor upgrades.

Reducing water use

Our customers in the South West are committed to water conservation, with some of the lowest water use per person in the state.

We work with South West communities through a range of programs such as Waterwise Schools, Waterwise Councils, Beyond Gardens and Waterwise Aquatic Centres.

Water saving programs

Increasing water recycling

About 27% of wastewater in the South West region is recycled each year. This amounts to 3.7 billion litres each year and we plan to increase this amount in the future.

More wastewater by volume is recycled in the South West region than any other region in WA. Major recycling schemes include:

  • Busselton Golf Club irrigation scheme
  • Margaret River recycling scheme
  • Kemerton and Manjimup tree farms.

We are also committed to increasing long-term water recycling for public open space and industrial use from Busselton and Bunbury Wastewater Treatment Plants.