City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#5089
Cloverdale
County, IN
89 B
#5090 Clymer
County, PA
89 B
#5091 Coalton
County, WV
89 B
#5092 Columbus Grove
County, OH
89 B
#5093 Colwich
County, KS
89 B
#5094 Commercial Point
County, OH
89 B
#5095 Corpus Christi
County, TX
89 B
#5096 Cottonwood Shores
County, TX
89 B
#5097 Crystal Lake
County, IL
89 B
#5098 Delhi
County, LA
89 B
#5099 Dresden
County, OH
89 B
#5100 Duenweg
County, MO
89 B
#5101 Dwight
County, KS
89 B
#5102 Edenton
County, NC
89 B
#5103 Elkton
County, MD
89 B
#5104 Englewood
County, FL
89 B
#5105 Ennis
County, MT
89 B
#5106 Falmouth
County, KY
89 B
#5107 Fate
County, TX
89 B
#5108 Fort Mill
County, SC
89 B
#5109 Fort Morgan
County, CO
89 B
#5110 Franklin
County, PA
89 B
#5111 Fredericksburg
County, TX
89 B
#5112 Gideon
County, MO
89 B
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.