City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#5353
Elroy
County, WI
88 B
#5354 Englewood
County, CO
88 B
#5355 Ennis
County, TX
88 B
#5356 Ethel
County, LA
88 B
#5357 Evergreen Park
County, IL
88 B
#5358 Fairfax
County, IA
88 B
#5359 Fairfax
County, MN
88 B
#5360 Faribault
County, MN
88 B
#5361 Farmersville
County, CA
88 B
#5362 Farmington
County, ME
88 B
#5363 Fitchburg
County, WI
88 B
#5364 Flower Mound
County, TX
88 B
#5365 Foley
County, MN
88 B
#5366 Fort Leonard Wood
County, MO
88 B
#5367 Fort Thompson
County, SD
88 B
#5368 Fox River Grove
County, IL
88 B
#5369 Frankfort
County, NY
88 B
#5370 Franklinton
County, LA
88 B
#5371 Frankston
County, TX
88 B
#5372 Fullerton
County, CA
88 B
#5373 Fulton
County, KY
88 B
#5374 Fulton
County, MS
88 B
#5375 Galloway
County, NJ
88 B
#5376 Gentryville
County, IN
88 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.