Our water quality

We provide filtered drinking water to over five million people every day.

Our water quality undergoes careful monitoring and management to ensure Sydney's tap water is safe to drink. Our water is filtered to the highest standard set by the Australian Drinking Water Guidelines and is carefully managed under our Drinking Water Management System to ensure everyone in our community has access to high-quality drinking water.

Our water is a precious resource. So, it’s essential that our water is safe for all Greater Sydney, the Blue Mountains and the Illawarra.

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Sydney water quality

We don’t just want to provide safe water - we want to provide great water. Sydney's tap water is some of the best in the world, and we go to great lengths, take many steps and work around the clock to ensure we have high water quality for everyone to drink.

It’s our job to protect our community by providing safe drinking water to everyone across Sydney, the Blue Mountains and the Illawarra every day. Most of your drinking water is sourced from rainwater collected in lakes and rivers, surrounded by some of the most unspoilt native bushland in the region, including World Heritage national parks.

Water testing

Quality is checked and assured with continuous monitoring at key steps. This includes online monitoring of catchments, water filters and the water supply network.

On top of this, we do up to 70 laboratory tests from our water filtration plants to customers’ taps to confirm your drinking water is high quality.

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