City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#10321
Wellsburg
County, WV
46 D
#10322 West Jefferson
County, NC
46 D
#10323 Augusta
County, WV
45 D
#10324 Bay St Louis
County, MS
45 D
#10325 Beverly
County, WV
45 D
#10326 Blossom
County, TX
45 D
#10327 Brenham
County, TX
45 D
#10328 Campbellsville
County, KY
45 D
#10329 Clinton
County, IL
45 D
#10330 Collinsville
County, IL
45 D
#10331 Creighton
County, PA
45 D
#10332 Dundee
County, NY
45 D
#10333 Fellsmere
County, FL
45 D
#10334 Green Cove Springs
County, FL
45 D
#10335 Grove
County, OK
45 D
#10336 Havre
County, MT
45 D
#10337 Holiday
County, FL
45 D
#10338 Kerrville
County, TX
45 D
#10339 Lilly
County, PA
45 D
#10340 Louisville
County, AL
45 D
#10341 Manteno
County, IL
45 D
#10342 Mccamey
County, TX
45 D
#10343 Mcmechen
County, WV
45 D
#10344 Mcminnville
County, TN
45 D
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.