Water recycling
Increasing the amount of water we recycle is essential to helping WA become more climate resilient. Learn more about water recycling in WA.
Learn moreClimate & water
How we're adapting to climate change
To protect our unique lifestyle in WA, we've had to understand the impacts of climate change and its varying effects across our region.
Learn more about climate change & WAOur water
As our climate changes, so does our access to water. Depending on how much rainfall runoff flows into our dams, there are fluctuations in our water source mix. Alongside desalination, groundwater plays an important role in sustaining our water supply, delving into the earth's underground aquifers. To protect our lakes and wetlands and further secure our supply, we're investing in a deep groundwater network. This will allow us to continue to reduce our groundwater withdraw from environmentally sensitive areas.
Climate & environment
We have had to adapt to the impacts of climate change to protect our unique WA lifestyle. By developing rainfall-independent drinking water sources, we're securing our water future. Learn about how climate change is impacting our state, our water sources, and our journey to a sustainable water cycle.
Environment & sustainability
Caring for our most valuable resource is a big responsibility. Find out how we're planning for a sustainable future and reducing our emissions.
Find out moreYou can help
Our water has never been more valuable and how we use it can result in significant savings. Learn how you can contribute to a more sustainable future.
Water saving tipsStreamflow & rainfall
Declining rainfall is affecting the amount of rainfall runoff (streamflow) into our dams. Stay up to date with streamflow and rainfall data and find out how our water use is tracking.
Perth’s winter rainfall is predicted to decrease by up to 15% by 2030.
Updated: Thursday, 24 July 2025
Learn more about how this data is updated
* Average monthly rainfall (for the period 1876 - 2016).
Dam volumes, rainfall and water use data is updated every working day, streamflow is updated weekly.
Adapting our water sources
We're the largest water utility globally, by area serviced, on the world's driest inhabited continent. With this, we face significant climate change impacts. Find out how we've diversified our water sources to ensure a secure water supply.
Groundwater
Groundwater remains a vital water source, but its also under pressure due to climate change and increasing demand.
Find out moreDesalination
Is a water source that doesn’t depend on rain. Since 2006, desalinated seawater has helped supply Perth with drinking water.
Find out moreWastewater
Around 20% of Western Australia's wastewater is recycled after treatment. Our commitment is to recycle 35% of wastewater by 2035.
Find out moreNews & updates
VIEW ALL ARTICLESStay up to date on how we are evolving and working to deliver water in the most sustainable way possible throughout Western Australia.
A dry and warm summer is on the way
Despite Perth’s wet August, rainfall run-off into Perth’s dams remains significantly below the long-term average.
Securing our regions' water future: a path to sustainable water services
We're securing water sources for the regions for the future and maintaining infrastructure to ensure communities have reliable drinking water.
Education for sustainability
Our Partnerships and Education team are taking proactive steps towards education for sustainability.