This past week marked the 50th anniversary of the Clean Water Act passed by Congress to protect U.S. waterways from abuses. Decades later, progress has been made but many waterways are still in peril and a new challenge has emerged; the fallout of thousands of sites potentially contaminated with perfluorooctanoic acid and perfluorooctane sulfonic acid substances known as PFAS. Read the full story by Macomb Daily.