State and local health officials are recommending that people using western Michigan's Rogue River avoid swallowing foam floating on the surface because it may contain high levels of toxic chemicals.
The Kent County Health Department and the Michigan Department of Health and Human Services said Tuesday that a sample of foam taken in April from the Rogue River just below the Rockford Dam found levels of per- and polyfluoroalkyl substances, or PFAS.
The agencies say current science suggests PFAS do not easily enter through the skin and touching it would not pose a risk to human health. They say more information is available online .
Michigan began investigating for PFAS last spring near the former manufacturing site where Wolverine World Wide used chemicals to waterproof shoe leather.