Here's what we know: Perfluoroalkyl and polyfluoroalkyl substances (PFAS) are getting into Lake Superior and getting into fish.
Here's something else we know: Perfluorooctanoic acid (PFOA) and perfluorooctane sulfonic acid (PFOS) are the most common of these chemicals and they bio-accumulate - which means they move through the food chain.
And while we don't know how they're getting into the lake, or how they've getting into smelt, the Wisconsin DNR and Department of Health Services are recommending no more than one serving per month of rainbow smelt.
For more information about PFAS and fish, visit the DNR’s PFAS webpage. For more information on PFAS and associated human health effects, visit the DHS’s PFAS webpage.
