City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#5281
Burtchville Township
County, MI
88 B
#5282 Butler
County, MO
88 B
#5283 Calico Rock
County, AR
88 B
#5284 Cambridge
County, NY
88 B
#5285 Camden
County, NC
88 B
#5286 Cando
County, ND
88 B
#5287 Canton
County, NC
88 B
#5288 Canton
County, SD
88 B
#5289 Carver
County, MA
88 B
#5290 Catawissa
County, PA
88 B
#5291 Cedar Bluff
County, AL
88 B
#5292 Cedar Rapids
County, IA
88 B
#5293 Centerville
County, TN
88 B
#5294 Chadron
County, NE
88 B
#5295 Chappaqua
County, NY
88 B
#5296 Chester
County, SC
88 B
#5297 Chico
County, TX
88 B
#5298 Chinquapin
County, NC
88 B
#5299 Circleville
County, OH
88 B
#5300 Clanton
County, AL
88 B
#5301 Clara City
County, MN
88 B
#5302 Clawson
County, MI
88 B
#5303 Clear Lake
County, SD
88 B
#5304 Clearlake Oak
County, CA
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.