Electrician Richard Ford, left, Water Treatment Plant operator Paul Mustey and Engineer Mike Davies at the new UV plant in Havelock. Photo: Marlborough District Council / supplied
A boil water notice for Havelock has now been lifted.
Marlborough District Council issued the notice in mid-July at the request of water regulator Taumata Arowai due to the lack of ultraviolet treatment for the small town's water supply.
At the time, council assets and services manager Richard Coningham said the risk of contamination in Havelock had not changed but the drinking water regulations had become more stringent.
Public water supplies in New Zealand require a multi-barrier approach to preventing contamination, including filtration, chlorine and ultraviolet treatment.
Council chief executive John Boswell said engineers and contractors had worked quickly to build a new temporary ultraviolet treatment plant at a cost of $750,000, which allowed the notice to be lifted.
It sat next to the council's existing chlorine treatment plant.
The temporary solution came ahead of new water treatment plant being completed in Havelock in 2028 at a cost of $14 million.
Some of the $750,000 cost would be recoverable through the reuse of equipment for the permanent plant, Boswell said.
Earthworks were required to build a 1.7-metre platform to support the container housing the UV equipment, as it is within the Kaituna River flood zone.
The power connection was upgraded with a transformer installed by Marlborough Lines.
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