Chlorine could last for years

Christchurch mayor adamant city's water supply will be chlorine-free in 12 months, despite report saying could take 3 years.

The cost to secure the city's water supply has skyrocketed from $630,000 to more than $21.5 million as the Christchurch City Council looks at long-term options to prevent the Government from making chlorination mandatory. .

The council decided in January to chlorinate the water for up to 12 months while it repaired 103 well heads, which were found to be unsafe and vulnerable to pollution from dirty surface groundwater. Read more