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Water quality

Greater Sydney's drinking water catchments

Greater Sydney's drinking water catchments

Managing the catchment

WaterNSW protects the health of the catchments to ensure reliable, quality drinking water is available for the 5 million people of Sydney and the Illawarra, Blue Mountains, Southern Highlands, Goulburn and Shoalhaven regions.

HCS cover
Development in the catchment

Every year there is a range of new residential, commercial and agricultural development and activities in Greater Sydney’s drinking water catchment.

Houses in the catchment
Mining

Mining is a significant community issue and an important focus for WaterNSW. There is a long history of coal mining in the Sydney drinking water catchments and, in recent years, coal seam gas has been an emerging issue.

Cliff face
Living in the catchment

Greater Sydney's drinking water catchment is home to over 125,000 residents enjoying a range of beautiful and diverse landscapes, towns and communities.

Property fence
Your local catchment

Find out more about local catchment areas.

Warragamba catchments

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42.7
Saturday 18 January
-0.2
1,108,685 ML
2,596,150 ML
9,231 ML
1,319 ML
-4,400 ML
Saturday 18 January