Business Update

Clean drinking water come fire or rain

We're investing $1 billion to future-proof your water.

Your water bill goes towards essential system upgrades. The most recent upgrade to make it on the list is the Prospect Pre-treatment Plant. The Prospect water system supplies around 85% of Sydney's drinking water. It's a lot! But it's getting harder to produce water for a growing population and keep up with stringent drinking water quality guidelines and extreme weather conditions. That's why we're building the new Prospect Pre-treatment Plant. When completed in late 2027, it will pre-treat raw water before it reaches our Prospect Water Filtering Plant. Clean, safe water should always flow from your tap, even during a crisis. New infrastructure puts us in front.

New conditions, new challenges

Unpredictable weather already brings more intense and frequent storms, droughts and bushfires. Extreme conditions send more dirt and contaminants into the dams your water comes from. Removing mud, debris and additional contaminants after storms is a burden for regular filtration plants. By pre-treating raw water, we greatly reduce the risk of having to shut down, ration supply or issue boil water alerts.

How the process works

The Prospect Pre-treatment Plant will use a chemical process to clump tiny particles together and filter them out before sending raw water to filtration plants.

Rebates for service interruptions

If water services are interrupted or there's damage to your property because of our system, we'll make it up to you.

Under our Customer Contract, you should get an automatic rebate on your next bill for things like water outages for longer than 5 hours or wastewater overflows from a fault in our system. If you're injured or your property is lost or damaged because of work we’ve done, make a claim. We'll investigate.

Our Customer Contract is our service guarantee. It explains your rights and responsibilities as a customer and sets out the minimum standards of customer service you can expect from us. It also tells you how to request agreements for services it doesn't cover.

Find out more about our obligations to owners and tenants and how to claim for damages.

Quarterly water quality report summary

Our water quality monitoring program confirmed that Greater Sydney's drinking water remains high quality and safe from November 2025 to January 2026, meeting the high standards set by the Australian Drinking Water Guidelines.

You can find the detailed quarterly water quality report for your area at Water analysis under 'Water quality report'.