City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#11305
Gallitzin
County, PA
0 F
#11306 Gary
County, TX
0 F
#11307 Gary
County, WV
0 F
#11308 Gauley Bridge
County, WV
0 F
#11309 Geary
County, OK
0 F
#11310 Geyserville
County, CA
0 F
#11311 Gibson
County, GA
0 F
#11312 Gilbert
County, AZ
0 F
#11313 Gilbertown
County, AL
0 F
#11314 Gillespie
County, IL
0 F
#11315 Gladstone
County, OR
0 F
#11316 Glasgow
County, KY
0 F
#11317 Glassboro
County, NJ
0 F
#11318 Gorman
County, TX
0 F
#11319 Gouldsboro
County, PA
0 F
#11320 Gramercy
County, LA
0 F
#11321 Grand Coteau
County, LA
0 F
#11322 Grand Island
County, NY
0 F
#11323 Grandfield
County, OK
0 F
#11324 Granite Shoals
County, TX
0 F
#11325 Grant
County, OK
0 F
#11326 Grantsville
County, UT
0 F
#11327 Grantsville
County, WV
0 F
#11328 Grantville
County, GA
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.