Michigan is charging ahead with some of the most stringent drinking water standards for fluorinated chemicals in the nation, while acknowledging the rules may have to be updated to reflect evolving science.
On June 27, a state science working group proposed maximum contaminant levels for seven per- and polyfluoroalkyl substances (PFAS) chemicals.
The standards for the chemicals, which are used to fight fires, make clothes, and create nonstick cookware and packaged food—among other uses—range from 6 parts per trillion for perfluorononanoic acid (PFNA) to 400,000 parts per trillion for perfluorohexanoic acid (PFHxA).
Michigan has been at the forefront of...
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