Water authorities across the US are systematically distorting water tests to downplay the amount of lead in samples, risking a dangerous spread of the toxic water crisis that has gripped Flint, documents seen by the Guardian show.
The controversial approach to water testing is so widespread that it occurs in “every major US city east of the Mississippi” according to an anonymous source with extensive knowledge of the lead and copper regulations. “By word of mouth, this has become the thing to do in the water industry. The logical conclusion is that millions of people’s drinking water is potentially unsafe,” he said.
Documents seen by the Guardian show that water boards in cities including Detroit and Philadelphia, as well as the state of Rhode Island, have distorted tests by using methods deemed misleading by the Environment Protection Agency.
There is no suggestion that EPA regulations have been broken, but the agency’s guidelines have been systematically ignored.
The revelation comes as the growing crisis in Flint, Michigan, has prompted an emergency EPA order, the condemnation of Barack Obama and the resignation of a top agency official.
The documents show a pattern of behaviour in addressing public health concerns about water across the US where “gamed” tests help ensure that water utilities don’t breach federal lead and copper rules.