A toxic chemical from the Gelman Plume was found in water wells in Scio Township

State environmental officials found 1,4-dioxane, a toxic chemical, in six residential water wells in Scio Township during annual state testing.

The dioxane, coming from the Gelman Plume, ranged between 0.33 to 0.86 parts per billion (ppb), well under the Michigan Department of Environment, Great Lakes and Energy’s (EGLE) drinking water limit of 7.2 ppb.

Although the state says the water is safe, some advocates for a more aggressive plume cleanup believe this new detection suggests the plume is moving north. They say it could be dangerous if it reaches Barton Pond, Ann Arbor’s main water source…

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