Chlorination of Christchurch’s drinking water supply will start from 26 March 2018, starting with Brooklands and Kainga, as well as the Heathcote Valley. Progressively over the following few weeks the rest of the city’s supply will be treated, so we should expect water to have been treated any time from 26 March onwards. More information here: https://ccc.govt.nz/services/water-and-drainage/water-supply/water-chlorination/
The Council is temporarily treating Christchurch’s drinking water with chlorine while it upgrades the below ground well heads. Temporary chlorination will start from 26 March 2018 and provides an extra level of protection against waterborne illnesses.