Toxic chemical from Gelman Plume found in water wells in Scio Township, Michigan

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Credit: Lester Graham/Michigan PublicBy Rachel LewisMichigan environmental officials found 1,4-dioxane, a toxic chemical, in six residential water wells in Scio Township during annual state testing. “The plume is considered to be expanding if dioxane exceeds the 7.2 ppb drinking water criterion in sentinel wells or boundary wells. “Community members expressed concerns that the previous detection limit of 0.5 ppb might miss low concentrations of dioxane in drinking water wells. “The EGLE dioxane drinking water criterion of 7.2 (ppb) is not protective of public health,” Bicknell said. As for the safety of Ann Arbor’s drinking water, Schweighoefer is confident the city will continue to pay close attention to the data.