Labour list MP and spokesman for water David Parker is calling for Hastings Mayor Lawrence Yule to resign immediately after yesterday's release of the findings into the Havelock North campylobacter outbreak.
Parker said there were three main aspects of failure that were identified.
One was that the Hastings District Council had known for many years that periodic contamination had occurred in the Brookvale bores, and that it should have been treating the water.
Another was that the district council and Hawke's Bay Regional Council had been incompetent not knowing that the aquifer was not confined and that the water had been contaminated by surface activities including the Mangateretere pond, the other old bores in the area, and Te Mata Mushrooms.
Finally, the dysfunctional relationship between the two councils had been detrimental to them protecting the safety of the drinking water, he said.
"The conclusion we have to make is that the leaders of these organisations have to take responsibility, the buck stops with them."