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Water supply quality and monitoring

Quality, monitoring and analysis of Christchurch water.

Water quality and monitoring

A typical average chemical (naturally occurring) analysis of Christchurch water.

Water chlorination

Water chlorination is the process of adding chlorine to the water supply to keep it safe from harmful bacteria. Sodium Hypochlorite is used in Christchurch.

Meter readings

The meters are read for the purpose of water conservation to determine if there is excessive water usage and identify if there are any leaks.

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Boil water notice lifted

The boil water notice affecting Christchurch’s Rawhiti water supply zone has been lifted.

16 Feb 2026

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16 Feb 2026

Council issues boil water notice for Rawhiti water supply zone

Residents and visitors to areas of New Brighton, Burwood, Wainoni, Aranui and Southshore are being advised to boil their water until further notice after a sample within the zone was found to be contaminated.

15 Feb 2026

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