Our water use

The water dial below shows Christchurch's total residential water use for yesterday, including commercial users but not usage from private wells. The personal use information is just residential use.

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Water use by zone









What do the different colour zones on the water dial mean?

Green zone

This zone represents an average day's water use. Lower water use means we can take more wells out of service, upgrade well heads faster and then stop chlorinating the water sooner. We all need to work together to make sure our water use stays within the green zone.

Yellow zone

If our water use gets into the yellow zone this could affect our ability to upgrade well heads. We can only upgrade well heads when water use is low and they’re not being used.

Red zone

If our water use stays in the red zone for a number of days we may need to impose water restrictions. It's not that we’re going to run out of water, it's that when demand for water is high we can only supply so much through the network. The pumps, pipes and reservoirs can only deliver a certain amount of water at any one time. If people use too much there could be a pressure loss in the system, shortages or not enough to fight fires.