PFAS can also enter the Great Lakes in unexpected ways, such as in rain and snowfall. The chemicals have been detected in rain across the world, including in states surrounding the Great Lakes. Elevated levels of PFAS have been detected in Great Lakes fish, raising concerns for fisheries. PFAS contamination is an issue beyond the Great Lakes and is something everyone can work to address. What to watch for next 👀 • Updates to federal and state PFAS drinking water standards and enforcement timelines.