One in ten Michigan public water systems contain fluorinated chemicals, according to a statewide study of the Wolverine State’s public drinking water.

On Feb. 25, the Michigan Department of Environmental Quality released its findings, believed to be the first statewide survey of its kind in the nation.

The state analyzed 1,114 public water systems, 461 schools, and 17 tribal water systems. Of the 10 percent of public drinking water sources with detectable per- and polyfluoroalkyl substances (PFAS),...