City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#11185
Bronson
County, KS
0 F
#11186 Brownsville
County, KY
0 F
#11187 Buckingham
County, VA
0 F
#11188 Buncombe
County, IL
0 F
#11189 Byrdstown
County, TN
0 F
#11190 Caddo
County, OK
0 F
#11191 Cadiz
County, OH
0 F
#11192 Caldwell
County, NJ
0 F
#11193 Calera
County, OK
0 F
#11194 Cameron
County, AZ
0 F
#11195 Cameron
County, LA
0 F
#11196 Camp Wood
County, TX
0 F
#11197 Campbellsburg
County, KY
0 F
#11198 Campti
County, LA
0 F
#11199 Caney
County, KS
0 F
#11200 Canisteo
County, NY
0 F
#11201 Canoncito
County, NM
0 F
#11202 Carrizozo
County, NM
0 F
#11203 Carthage
County, TX
0 F
#11204 Casa
County, AR
0 F
#11205 Castor
County, LA
0 F
#11206 Cedar Lake
County, IN
0 F
#11207 Chama
County, NM
0 F
#11208 Chandler
County, OK
0 F
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.