Hastings people have been reassured there is no physical connection between Havelock North and Hastings water.
Hastings District Council water services manager Brett Chapman told a press conference this morning that Hastings water was sourced from more than 60m deep with five confining barriers.
Earlier the council said an e-coli indicator has been found in one of nine water tankers used to supply drinking water to Havelock North residents.
The council made the decision to chlorinate the water supply and emailed the DHB to tell them about it. The DHB confirmed chlorination today was appropriate, Mr Chapman said.
The suspect water tanker had a sign placed on it as soon as the positive indicator test was received and the tanker was later removed.