A sample of Bulls' drinking water could be on its way overseas to have the levels of PFAS in it double-checked.
In March the Rangitikei District Council's chief executive, Ross McNeil, said Defence Force experts had found the presence of PFAS in four of the five bores in the Bulls' supply network.
But he declared it was safe to drink as the amount of PFAS in the water was well below the threshold level in the New Zealand Drinking Water Guidelines.
PFAS are a class of manmade chemicals widely used since the 1950s for products including firefighting foams used at airports.
At a Rangitikei District Council meeting on Thursday, councillor Graeme Platt said he was concerned testing in New Zealand is not the best internationally.