A Jersey Environmental group has been accused of scaremongering with its claims about water quality.
The Environment Department says Save Our Shoreline Jersey used "selective data" in a report about nitrates in water supplies.
A statement from the department claims the information the campaigners use is "out of context" and is not scientific enough for them to consider.
The Environment and Infrastructure Ministers are worried the information will cause "undue concern".
The report, entitled Death by Neglect - Jersey’s Environmental Time Bomb, says there are "unhealthy and illegal" levels of nitrate in reservoirs and drinking water.
SOSJ have slammed the States' "bunker mentality" and are "disappointed" their research has been "ignored".
The group are calling for politicians to make changes to tackle the problem.
However, the Environment and Infrastructure Ministers say water quality is improving.
You can read Save our Shoreline's full report here.