City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#2257
Bowman
County, SC
96 A
#2258 Bremen
County, KY
96 A
#2259 Briarcliff Manor
County, NY
96 A
#2260 Brooklyn Park
County, MN
96 A
#2261 Brookston
County, IN
96 A
#2262 Broomfield
County, CO
96 A
#2263 Brownsville
County, CA
96 A
#2264 Buda
County, TX
96 A
#2265 Bunker Hill
County, IL
96 A
#2266 Burlington
County, CO
96 A
#2267 Cadiz
County, KY
96 A
#2268 Caldwell
County, KS
96 A
#2269 Captiva
County, FL
96 A
#2270 Carlin
County, NV
96 A
#2271 Carlisle
County, OH
96 A
#2272 Carrington
County, ND
96 A
#2273 Carver
County, MN
96 A
#2274 Casstown
County, OH
96 A
#2275 Castle Pines
County, CO
96 A
#2276 Cedar Bluff
County, VA
96 A
#2277 Cedar Falls
County, IA
96 A
#2278 Cedartown
County, GA
96 A
#2279 Centennial
County, CO
96 A
#2280 Central
County, SC
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.