Where your water comes from

The region’s water supply is drawn from dams, rivers, groundwater and springs
Pie graph showing where Auckland's water came from over the past seven days

In the seven days to 16 January 2022, the proportion of water supplied by each source was:

Dams = 66.14%
Waikato River = 28.48%
Groundwater = 5.38%

That % can vary due to the levels in the storage dams, forecast rainfall, treatment plant capacity, and the cost of transmitting water to the treatment plant.

Read about our water supply situation here.
Which areas does Watercare supply?
Are there other sources of water?
What is the average rainfall per year in the Auckland region?