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


14 Jun 2022, AWST 14:00 | Incident Update

Sewer main emergency repair works – Town of Cottesloe

Water Corporation is conducting emergency repairs to a damaged sewer main at Car Park One on Marine Parade, Cottesloe.

  • Service alert
  • Wastewater
28 Jun 2022 | Update

One giant leap for spongekind

A new species of freshwater sponge has been discovered in Wyndham. This is the first time the genus has been reported in Australia.

  • Environment
  • North West
  • Dams
23 Jun 2022 | Media Release

New renewably-powered desalination plant planned for Alkimos

Alkimos has been selected as the preferred location for the State's next major water source - a renewably-powered seawater desalination plant that will provide safe, secure drinking water to millions of Western Australians.

  • Water sources
  • Plants
  • Climate change

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