Our water sources

Perth’s water sources have changed over time due to climate change. We’re getting less rain, which means less water flowing into our dams. Over the past decade we’ve introduced new climate independent sources - seawater desalination and groundwater replenishment.

In 2017/18 the Integrated Water Supply Scheme produced 312 billion litres of water for our customers, made up of:

desalination
48% Desalination
groundwater
40% Groundwater
Surface water
10% Dams  
(surface water)
groundwater replenishment
2% Groundwater
replenishment

Find out more about our water sources

 

Desalination

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Desalination

Find out about desalination and why it will remain a cornerstone of Perth’s water supply.

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Groundwater

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Groundwater

Our plans to invest in a new expanded deep groundwater network.

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Dams

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Dams

Declining rainfall means the water in our dams is no longer just made up of inflows from rain.

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Groundwater replenishment

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Groundwater replenishment

Find out what groundwater replenishment is and its vital role in Perth’s water supply.

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Securing Perth's water supply

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Securing Perth's water supply

We have a long term plan in place to secure our water future for generations to come.

Securing Perth's water supply

Recycled water

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Recycled water

Our water recycling targets and how we're increasing the amount of water we recycle.

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Reducing water use

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Reducing water use

Working with the community to become more water efficient is an important part of our plan.