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All 3 cities ranked by water quality score
How Michigan's 3 cities are distributed by water quality grade
3 out of 3 cities meet or exceed a B grade for water quality
Sorted by water quality score from best to worst. Click any city for a detailed water quality report.
| Rank | City | Score | Grade |
|---|---|---|---|
| 1 | Detroit | 95/100 | A+ |
| 2 | Grand Rapids | 95/100 | A+ |
| 3 | Warren | 95/100 | A+ |
The best water quality in Michigan is found in Detroit with a score of 95/100 and a grade of A+. This puts Detroit among the top-performing cities in the country for drinking water safety.
The most concerning water quality is in Warren scoring 95/100 with a grade of A+. Residents may want to consider home water testing and filtration options.
The statewide average score is 95/100, which is 23 points above the national average of 72/100. A strong majority (100%) of Michigan cities exceed the national average, indicating generally good water infrastructure across the state.
Michigan tap water averages 95/100. Even with solid scores, a certified filter removes trace contaminants and improves taste — especially useful for households with young children or anyone sensitive to chlorine or lead.
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Detroit has the best water quality in Michigan with a score of 95/100 and a grade of A+. This score is based on contaminant levels, EPA compliance history, and infrastructure quality. Detroit ranks among the top cities nationally for water quality.
Water quality varies across Michigan. The state average score is 95/100. 100% of Michigan cities have good water quality (grade B or better). All cities in Michigan maintain at least a C-grade, though individual results can vary by neighborhood and home plumbing. Always check your specific city's water quality report for the most accurate local information.
Of the 3 cities tracked in Michigan, 0 cities have a D or F grade, indicating significant water quality concerns. 3 out of 3 cities (100%) score above the national average of 72/100. Residents concerned about their water quality can check their city's detailed report for specific contaminant information.
This page serves as a comprehensive water quality report for all 3 Michigan cities, compiled from EPA contaminant data and compliance records. Each city link provides an individual water quality report with safety grade, top contaminants, and infrastructure assessment. For official Consumer Confidence Reports (CCR), contact your local water utility — federal law requires all community water systems to deliver an annual CCR to customers. The Michigan state environmental agency and the EPA's Safe Drinking Water Information System (SDWIS) also publish official water quality data.
State water quality summary and key statistics
Top 20 cities with the cleanest water
Top-ranked cities nationwide
Cities with the most concerning water
Compare water quality across all 50 states
Side-by-side water quality comparison