Recycled water

Increasing the amount of water we recycle is vital to help WA become more climate resilient. Find out all about our water recycling plans.

Finding new water sources that allow us to be less dependent on rain is essential to Perth's water future. By working with businesses and industry on developing efficient water recycling practices, we can continue to secure a robust and sustainable water future. 

What is recycled water?

Recycled water is treated wastewater which is further treated so it is 'fit for purpose'. It can then be used for a range of purposes like:

  • irrigation of sports grounds, golf courses and public open spaces
  • industrial processing
  • replenishing our groundwater after further treatment
  • toilet flushing/clothes washing/garden watering
  • maintaining wetlands or other environmental purposes
  • irrigation of non-food crops (e.g: trees, woodlots, turf, flowers)
  • construction/dust suppression.

Our water recycling targets

We are committed to recycling 30% of wastewater by 2030. 

Over the last 10 years we have increased the total volume of recycled water by almost 70% across WA.

How does it work?

Watch our video which explains how this process works:

Read a transcript of this video (new window)

How are we recycling water?

This involves recharging high quality recycled water to groundwater and storing for future use.

Find out more about Groundwater Replenishment

This may involve augmenting rivers and stream flows with recycled water and increasing water supplied to wetlands and lakes.

In the South West region, the Swamphen, Island and Peninsula wetlands are enhanced with 30 million litres of treated and disinfected wastewater each year from the Capel Wastewater Treatment Plant.

Capel Wetlands case study

The Kwinana Water Recycling Plant has been supplying high quality recycled water to the nearby industrial area since 2004. As a result, Kwinana industry has more than halved its use of our drinking water.

More about recycled water for industry

This is where two separate pipes deliver two types of water – one for drinking water, another for non-drinking uses such as garden watering or toilet flushing.

The water source for non-drinking uses can be from recycled water, greywater, stormwater, rainwater, or groundwater.

More about dual reticulation

We are involved in approximately 50 water recycling schemes in WA to irrigate parks, gardens, golf courses, sports grounds and other open spaces.

We also provide recycled water free for community uses where it is available.

McGillivray Oval case study

Sewer mining is the process of extracting, treating and using wastewater before it reaches a wastewater treatment plant. 

Water recycled through sewer mining can be used for purposes such as:

  • irrigating sporting fields, golf courses, parks and gardens
  • and in commercial building applications.

Sewer mining has the potential to recover nutrients and energy. 

Read more about sewer mining

Our new innovation hub, the Water Research & Innovation Precinct, is investigating this and other innovative wastewater treatment and resource recovery technologies.

Water Research & Innovation Precinct

Case studies

We aim to secure WA's water future by recycling 30% of the wastewater we manage by 2030.

Water recycling case studies