City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#5881
Clearlake
County, CA
86 B
#5882 Clinton
County, MO
86 B
#5883 Clinton
County, NY
86 B
#5884 Coldwater
County, MS
86 B
#5885 Collinsville
County, AL
86 B
#5886 Columbus
County, OH
86 B
#5887 Corbett
County, OR
86 B
#5888 Corinth
County, TX
86 B
#5889 Counce
County, TN
86 B
#5890 Dahlgren
County, VA
86 B
#5891 Deerfield
County, WI
86 B
#5892 Delphos
County, OH
86 B
#5893 Devens
County, MA
86 B
#5894 Dillard
County, OR
86 B
#5895 Douglass
County, KS
86 B
#5896 Dover
County, TN
86 B
#5897 Doylestown
County, PA
86 B
#5898 Dugger
County, IN
86 B
#5899 Eagle Lake
County, MN
86 B
#5900 Eagle Lake
County, TX
86 B
#5901 East Grand Forks
County, MN
86 B
#5902 East Greenbush
County, NY
86 B
#5903 Eddy
County, TX
86 B
#5904 Edgerton
County, KS
86 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.