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Water expert rejects explanation on Flint corrosion control

A water expert who first raised concerns about lead in Flint's drinking water dismissed as "contrived" a city official's suggestion in an email that anti-corrosive phosphates weren't added to the Flint River because of worries that the chemicals would promote bacterial growth.

Environmental engineer Marc Edwards of Virginia Tech told The Associated Press on Wednesday that the Sept. 3 comment by Howard Croft, the former Flint public works director, was "a hindsight explanation" that came shortly after Edwards and his associates went public with warnings that the city's drinking water was dangerous. The river already had sufficient levels of phosphates to...

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