This spring, the Michigan Department of Environmental Quality set out to test 1,300 public water systems for PFAS. So far, it's showed up in 69 places, ranging from large city systems to small mobile home park supplies.
Only twice has it tested over the action level of 70 parts per trillion -- once at astronomical levels in the City of Parchment, where a State of Emergency was declared before water quality could be restored -- and once at 72 parts per trillion in *one* of the City of Kalamazoo's pumping stations (this was deemed to not be cause for concern).
This map shows locations where any amount of PFAS has been detected. Clicking on a dot will show the highest PFAS measurement at that location. The state is projected to finish this testing in November, and Michigan Radio will update the map as test results continue to be released. Full testing data can be found on the state's PFAS response website.