City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#8905
Doniphan
County, MO
68 C
#8906 Dudley
County, GA
68 C
#8907 Duquesne
County, PA
68 C
#8908 Elaine
County, AR
68 C
#8909 Elmwood
County, IL
68 C
#8910 Ephraim
County, UT
68 C
#8911 Fayette
County, MS
68 C
#8912 Ford City
County, PA
68 C
#8913 Franklin
County, MA
68 C
#8914 Freelandville
County, IN
68 C
#8915 Fulton
County, IL
68 C
#8916 Gladbrook
County, IA
68 C
#8917 Gloster
County, MS
68 C
#8918 Hampden-Sydney
County, VA
68 C
#8919 Harrisville
County, MS
68 C
#8920 Harvard
County, MA
68 C
#8921 Haysville
County, KS
68 C
#8922 Hazleton
County, PA
68 C
#8923 Hobart
County, OK
68 C
#8924 Holyoke
County, MA
68 C
#8925 Hooks
County, TX
68 C
#8926 Humboldt
County, AZ
68 C
#8927 Huntington
County, IN
68 C
#8928 Ilion
County, NY
68 C
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.