City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#11137
Ft. Thomas
County, KY
0 F
#11138 Gallitzin
County, PA
0 F
#11139 Gallup
County, NM
0 F
#11140 Gary
County, WV
0 F
#11141 Gary
County, TX
0 F
#11142 Gauley Bridge
County, WV
0 F
#11143 Geary
County, OK
0 F
#11144 Georgetown
County, LA
0 F
#11145 Geyserville
County, CA
0 F
#11146 Gilbertown
County, AL
0 F
#11147 Gillespie
County, IL
0 F
#11148 Gladstone
County, OR
0 F
#11149 Glasgow
County, KY
0 F
#11150 Glassboro
County, NJ
0 F
#11151 Gorman
County, TX
0 F
#11152 Gouldsboro
County, PA
0 F
#11153 Gramercy
County, LA
0 F
#11154 Grand Cane
County, LA
0 F
#11155 Grand Canyon
County, AZ
0 F
#11156 Grand Coteau
County, LA
0 F
#11157 Grand Island
County, NY
0 F
#11158 Grandfield
County, OK
0 F
#11159 Granite Shoals
County, TX
0 F
#11160 Grant
County, OK
0 F
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.