For nogle vigtige parametres vedkommende såsom pesticider, klorholdige opløsningsmidler og trihalometaner er dette helt klart en utilstrækkelig reaktion, idet der ofte er tale om kræftfremkaldende stoffer.
In respect of certain essential parameters such as pesticides, chlorinated solvents and trihalomethanes, its response has been entirely inadequate, considering that many of these are carcinogenic substances.