City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#11161
Grantsville
County, UT
0 F
#11162 Grantsville
County, WV
0 F
#11163 Green Pond
County, AL
0 F
#11164 Greenlawn
County, NY
0 F
#11165 Grove
County, OK
0 F
#11166 Groveton
County, TX
0 F
#11167 Gueydan
County, LA
0 F
#11168 Hahira
County, GA
0 F
#11169 Haines
County, AK
0 F
#11170 Hallandale Beach
County, FL
0 F
#11171 Hamilton
County, TX
0 F
#11172 Hamlet
County, NC
0 F
#11173 Hankinson
County, ND
0 F
#11174 Harlan
County, KY
0 F
#11175 Harlem
County, MT
0 F
#11176 Harrah
County, OK
0 F
#11177 Harrodsburg
County, KY
0 F
#11178 Hart
County, TX
0 F
#11179 Hartford
County, AL
0 F
#11180 Hartshorne
County, OK
0 F
#11181 Hartsville
County, TN
0 F
#11182 Haughton
County, LA
0 F
#11183 Havre De Grace
County, MD
0 F
#11184 Hawarden
County, IA
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.