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How Perth's water sources have changed over time
Climate change has dramatically affected where we get our water from. Because rainfall is unpredictable, we now have a growing reliance on more energy-intensive and expensive, rainfall-independent drinking water sources. This includes desalinated seawater - water from the Indian Ocean with salt and impurities removed. There are fluctuations in our water source mix year to year, depending on how much rainwater we get. But, on average, Perth has relied on desalinated seawater over the past 5 years for around half of its drinking water supply. This is expected to increase in the future.
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Sign up for alertsAdapting our water supply to climate change
Ever wondered how climate change has affected our water supply?
Monthly Streamflow
2024
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Year to date
Historical *
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Avg year to date
Difference
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Years of declining rainfall means less water flowing into your dams.
* Average monthly streamflow between 1911 - 1974
Environment and sustainability
We’re on the road to net zero greenhouse gas emissions by 2035. To meet our target, we’re not just looking into traditional renewables. We’re also recovering and reusing energy from our own operations. From solar to biogas to wind powered water, follow our journey so far.
Flexible payment options
We have flexible payment options to make managing bills easier for households and businesses.
Latest updates
VIEW ALL ARTICLESTherapy program brings hope and healing to the Fitzroy Valley
Grants from Water Corporation and Lions Club of Broome have helped launch a recreational equine therapy program in the Fitzroy Valley.
Win tickets to The Pool
To celebrate our partnership with Black Swan State Theatre Company, we’re giving away 10 double passes to The Pool by Steve Rodgers. Find out how you could win tickets.
Our landmarks in the sky
The Perth metropolitan area and most of Western Australia is well served by water towers.