City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#1681
Mc Connellstown
County, PA
98 A
#1682 Mcallen
County, TX
98 A
#1683 Mccleary
County, WA
98 A
#1684 Mcintosh
County, AL
98 A
#1685 Mcmurray
County, PA
98 A
#1686 Mechanicsburg
County, OH
98 A
#1687 Medford
County, MN
98 A
#1688 Menlo Park
County, CA
98 A
#1689 Mexico
County, ME
98 A
#1690 Michigan Center
County, MI
98 A
#1691 Mickleton
County, NJ
98 A
#1692 Midway City
County, CA
98 A
#1693 Milan
County, MI
98 A
#1694 Milan
County, OH
98 A
#1695 Milford
County, DE
98 A
#1696 Millersburg
County, OH
98 A
#1697 Millington
County, MI
98 A
#1698 Milton
County, LA
98 A
#1699 Milton
County, WA
98 A
#1700 Minier
County, IL
98 A
#1701 Minot
County, ND
98 A
#1702 Mira Loma
County, CA
98 A
#1703 Miramar Beach
County, FL
98 A
#1704 Mobridge
County, SD
98 A
Frequently Asked Questions
How are city water quality rankings calculated?
WaterQ city rankings are based on EPA SDWIS data across local public water systems, including contaminant detections, compliance violations, and recency-weighted score signals.
Can I compare two US cities directly?
Yes. Use the city comparison links on this page or open the Compare tool to evaluate two cities side by side on score, grade, and water system coverage.
How often does WaterQ refresh city data?
City-level metrics refresh when new EPA data is processed. Check city pages for latest score and violation context.