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Not health advice. Contact your local water utility for concerns.
Data from EPA Water Quality Reports. For official information, contact your water utility or health department.
Water quality scores for 3 cities in Michigan
See the top 20 cities with the cleanest, safest drinking water
Complete water quality rankings for every city in Michigan
4,000,000 residents
300,000 residents
135,000 residents
Michigan's water quality gained national attention after the Flint water crisis, which highlighted the importance of proper water treatment and infrastructure maintenance. The state is surrounded by the Great Lakes, providing abundant high-quality source water, but distribution system challenges and contamination in some areas require ongoing attention.
Based on our analysis of 3 cities in Michigan, the average water quality score is 95/100. The highest-rated city is Warren with a score of 95/100, while Detroit has the most room for improvement at 95/100.
The Great Lakes (Superior, Michigan, Huron, Erie) surround Michigan and provide drinking water for most of the population. These are among the cleanest large-scale water sources in the country. Some communities rely on groundwater, particularly in rural areas and the Upper Peninsula.
These contaminants have been detected in various Michigan water systems
Michigan Department of Environment, Great Lakes, and Energy (EGLE) oversees drinking water. Post-Flint, Michigan strengthened its Lead and Copper Rule with more protective requirements than federal standards. The state has invested heavily in testing, infrastructure replacement, and PFAS investigation.
Lead remains the primary concern, particularly in communities with older infrastructure. PFAS contamination has been identified in numerous communities statewide, particularly near military bases and industrial sites. Proper corrosion control is essential for safe tap water in all Michigan communities.
Michigan residents should know their water utility's lead service line status and replacement plans. Request lead testing if uncertain about your home's plumbing. Consider NSF-certified lead filters, especially if you have young children. Stay informed about PFAS investigations and treatment in your area.
Most Michigan cities have tap water that meets EPA safety standards. With an average score of 95/100 across 3 cities we analyzed, Michigan generally has good water quality. However, water quality varies by location, so check your specific city's report.
The most common water quality concerns in Michigan include lead (infrastructure concerns), pfas (widespread contamination), copper (corrosion control issues). These contaminants can come from natural sources, industrial activities, or aging infrastructure. Review your city's specific report to see which contaminants affect your area.
Whether you need a water filter depends on your specific location and health concerns. Most Michigan cities have water that meets EPA standards, though some residents prefer additional filtration for taste or extra protection. Look for filters certified by NSF/ANSI to remove the specific contaminants found in your area.
Public water systems in Michigan are required to provide annual Consumer Confidence Reports (CCRs) to residents. You can usually find your report on your water utility's website, request it by phone, or access it through the EPA's database. Our city-level reports above summarize key information from these official sources.
Lead can be present in Michigan water, primarily from older plumbing infrastructure. Homes built before 1986 may have lead pipes or lead solder. While water treatment plants remove lead, it can leach into water from service lines and home plumbing. Check your city's specific report for lead testing data, and consider having your tap water tested if you live in an older home.
PFAS ("forever chemicals") have been detected in water systems across the United States, including in Michigan. These chemicals are associated with industrial sites, military bases, and firefighting foam use. The EPA has set new PFAS limits effective 2024. Check individual Michigan city reports for PFAS testing results in your area.
Based on our analysis, Warren has the highest water quality score in Michigan at 95/100 (Grade A+). However, "best" depends on your specific health concerns. View our Best Water Quality in Michigan page for a complete ranking.
Public water systems in Michigan are required by the EPA to test water regularly. Testing frequency depends on the contaminant: bacteria testing occurs daily to weekly, while chemical contaminants may be tested quarterly or annually. Results are published in annual Consumer Confidence Reports. Our site aggregates this data from EPA's SDWIS database.
Compare water quality across counties and find data for your area