Penny Gaylor, a Kapiti candidate for the Wellington Regional Council, says ensuring good quality water is a key priority for her.
She said the regional council was responsible for monitoring the water quality and flow of 55 sites in the region.
"Being vigilant about what's going on in these areas is very important," her statement said.
"While I am very proud to have served on a council [Kapiti Coast District Council] that established a long-term award-winning water supply system, there's never room for complacency when it comes to water.
"The picture emerging from Havelock North shows how little the public and many local politicians know about what's needed to make sure clean, safe water comes out of the tap.