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EPA WATER QUALITY DATA · MI

Michigan Tap Water Quality by City

EPA UCMR5 PFAS monitoring data, violation history, and filter recommendations for 3 cities across Michigan. All data sourced directly from federal EPA databases.

3
Cities tracked
3
With PFAS violations
30 ppt
Highest PFAS detected
Highest contamination in Michigan: Detroit — detected at 30 ppt (8× the EPA limit for PFOA/PFOS)
MICHIGAN CITIES — TAP WATER REPORTS
DetroitHIGH RISK3 MCL VIOLATIONS
Great Lakes Water Authority · Pop. 630K
30
ppt PFAS
Grand RapidsHIGH RISK3 MCL VIOLATIONS
Grand Rapids Water System · Pop. 195K
30
ppt PFAS
Ann ArborHIGH RISK3 MCL VIOLATIONS
Ann Arbor Water Treatment Services · Pop. 120K
30
ppt PFAS
ABOUT WATER QUALITY IN MICHIGAN

Michigan water quality varies significantly by city and water system. The EPA's UCMR5 monitoring program tested all systems serving 3,300+ people for 29 PFAS compounds between 2023 and 2025. In Michigan, 3 of the 3 tracked cities returned results with active MCL violations — meaning detected PFAS levels exceed the EPA's legally enforceable maximum.

Click any city above for a full breakdown of detected compounds, violation history, water hardness data, and certified filter recommendations matched to the actual contaminant profile of that system.

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