Michigan Water Quality: 131 Cities Ranked by the Records

PurityMap ranks 131 cities in Michigan by the Purity Score of each city's main water system, computed only from contaminants measured in the published EPA record. Scores belong to water systems, not to cities. The highest published score is Lansing Light's main water system: LANSING BOARD OF WATER & LIGHT · PWSID MI0003760 · Purity Score 100 (Excellent) · Confidence: moderate · Assessed at the water-system level. The ranking compares the records, not which city's water is safest, and your own tap can differ with household plumbing.

2 cities of 131 had at least one regulated PFAS (PFOA, PFOS or PFHxS) measured above the 2024 federal limit in EPA's UCMR 5 testing, including Independence Township (PFHxS 30 ng/L), Kalamazoo (PFOS 6.7 ng/L). PFAS were detected at any level in 20.

Utilities report lead as a 90th-percentile result from home taps. 89 of 131 Michigan cities reported a value above zero, and 3 cities were above the 15 µg/L federal action level. Lead usually comes from a building's own pipes and fixtures, so only a test at your tap tells you what you drink.

2 cities in Michigan have a health-based violation in the federal SDWIS record within about the last ten years. Each city report lists the contaminant, year and whether it was resolved.