5/21/2026

LANSING - As the weather warms, the Michigan Department of Health and Human Services urges residents to avoid foam on the surface of Michigan lakes, rivers, streams and other surface waters.  The Michigan Department of Health and Human Services says foam can form on any body of water, and it tends to pile up in bays, eddies, dams or other river barriers. It can be white, off-white or brown, and it may have an earthy or fishy scent.  MDHHS says the foam can contain harmful chemicals or bacteria, including high levels of PFAS, or per- and polyfluoroalkyl substances.  The release says if you touch any foam, rinse off or bathe as soon as possible and recommends keeping your pets away from surface water foam as well.