Hastings District councillors have approved a $9.8 million budget increase for the council's high-profile water projects, noting the blow-out could have been worse if they hadn't started the upgrades sooner.
Large water tanks in Frimley Park and site near the council on Southampton St East are to be built as part of the water system upgrades set out in the 2018 Drinking Water Strategy.
The cost increase will be loan-funded by the council to the tune of $6.8m and $3m by the reallocation of central Government funds granted to council.
It brings the total cost of water upgrade projects to $81.9m - $67.8m of which is loan-funded by council and $14.1m Government funded.
At the meeting, councillor Geraldine Travers noted the council began water upgrades four years ago, before the current drinking water standards were brought into place, and other councils were further behind.