City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#2281
Channelview
County, TX
96 A
#2282 Chateaugay
County, NY
96 A
#2283 Chatom
County, AL
96 A
#2284 Chattaroy
County, WA
96 A
#2285 Cherokee
County, NC
96 A
#2286 Cherokee
County, IA
96 A
#2287 Cherokee Village
County, AR
96 A
#2288 Chicora
County, PA
96 A
#2289 Chillicothe
County, OH
96 A
#2290 Chimayo
County, NM
96 A
#2291 Choctaw
County, MS
96 A
#2292 Choteau
County, MT
96 A
#2293 Chowchilla
County, CA
96 A
#2294 Chubbuck
County, ID
96 A
#2295 Cibolo
County, TX
96 A
#2296 Clarendon Hills
County, IL
96 A
#2297 Clarkesville
County, GA
96 A
#2298 Clayton
County, NM
96 A
#2299 Cleveland
County, GA
96 A
#2300 Clinton
County, WI
96 A
#2301 Coachella
County, CA
96 A
#2302 Coalinga
County, CA
96 A
#2303 Cody
County, WY
96 A
#2304 Coker
County, AL
96 A
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.