The quality of drinking water in Featherston and Greytown will improve due to a South Wairarapa District Council project expected to be completed by Christmas.
The project being carried out for the two towns' water supplies will ensure security of supply, according to SWDC chief executive Paul Crimp.
A water treatment plant built at Woodside in 2000 to supply water to Featherston and Greytown has been a challenge for the council, the main issue being the inability of the plant to process suitable drinking water when the Waiohine River remained in flood.
In 2011 seed funding from the Ministry of Health under the drinking-water subsidy programme was used to investigate a ground water source to use as an alternative to the river water.
SWDC drilled two bores near the plant and as a result found water of a suitable quality for drinking.