Think climate change. Be waterwise

Picture of one of our two desalination plants

How Perth's water sources have changed over time

Climate change has dramatically affected where we get our water from. We can no longer rely on the rain to meet our water needs.

As we continue to feel the impacts of climate change, we have adapted. We are working with government, partnering with businesses and supporting the community to take action on climate changes.

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Perth water supply map

Adapting our water supply to climate change

Ever wondered how climate change has affected our water supply?

Find out more

Monthly Streamflow


- GL

Year to date

Historical *

- GL

Avg year to date



- GL

Years of declining rainfall means less water flowing into your dams.

* Average monthly streamflow between 1911 - 1974


Latest updates


22 Oct 2021 | Media Release

Perth weekly water update - 22 October

Latest metro water use, dam levels, streamflow and rainfall data.

  • Climate change
  • Community
  • Dams
22 Oct 2021 | Media Release

Designing a waterwise neighbourhood made easier during National Water Week

Water Minister Dave Kelly is encouraging housing developers to recognise the value of water-sensitive urban design in combatting the impacts of climate change and reduced rainfall, through a waterwise development guide being promoted as part of National Water Week.

  • Community
  • Waterwise
  • Waterwise developments
  • Renovating
21 Oct 2021 | Media Release

New water pipes in the works for East Fremantle

Historic pipelines supplying drinking water to East Fremantle, Palmyra and Bicton for nearly a century will soon be replaced as part of a project to maintain water supply reliability in the area.

  • Community
  • Projects
  • Water sources

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