City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#7177
Brashear
County, TX
80 B
#7178 Brevard
County, NC
80 B
#7179 Brownfield
County, TX
80 B
#7180 Bruceton Mills
County, WV
80 B
#7181 Butner
County, NC
80 B
#7182 Caldwell
County, ID
80 B
#7183 California
County, MO
80 B
#7184 Call
County, TX
80 B
#7185 Cambria
County, IL
80 B
#7186 Cambridge
County, OH
80 B
#7187 Canadian
County, TX
80 B
#7188 Canton
County, MS
80 B
#7189 Canton
County, PA
80 B
#7190 Carlton
County, OR
80 B
#7191 Carmel
County, IN
80 B
#7192 Carrier Mills
County, IL
80 B
#7193 Carthage
County, NC
80 B
#7194 Cary
County, NC
80 B
#7195 Centerpoint
County, IN
80 B
#7196 Centreville
County, MS
80 B
#7197 Chester
County, PA
80 B
#7198 Clarkdale
County, AZ
80 B
#7199 Clinton
County, MA
80 B
#7200 Clinton
County, MI
80 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.