City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#8185
Canton
County, IL
74 C
#8186 Carrabelle
County, FL
74 C
#8187 Carrollton
County, IL
74 C
#8188 Carrollton
County, MS
74 C
#8189 Cave Creek
County, AZ
74 C
#8190 Celeste
County, TX
74 C
#8191 Central Valley
County, NY
74 C
#8192 Chula Vista
County, CA
74 C
#8193 Clearfield
County, PA
74 C
#8194 Cohoes
County, NY
74 C
#8195 Columbia
County, LA
74 C
#8196 Cresson
County, PA
74 C
#8197 Crooksville
County, OH
74 C
#8198 Cuba
County, IL
74 C
#8199 Cypress
County, TX
74 C
#8200 Danvers
County, IL
74 C
#8201 Dunbar
County, PA
74 C
#8202 East Hazel Crest
County, IL
74 C
#8203 East Peoria
County, IL
74 C
#8204 East Stroudsburg
County, PA
74 C
#8205 Elwood
County, KS
74 C
#8206 Enterprise
County, AL
74 C
#8207 Epping
County, NH
74 C
#8208 Evansdale
County, IA
74 C
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.