City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#8353
Benton
County, LA
73 C
#8354 Booneville
County, MS
73 C
#8355 Britt
County, IA
73 C
#8356 Bryn Mawr
County, PA
73 C
#8357 Cabo Rojo
County, PR
73 C
#8358 Cambridge
County, WI
73 C
#8359 Cascade Locks
County, OR
73 C
#8360 Chaffee
County, MO
73 C
#8361 Clarkton
County, NC
73 C
#8362 Clay City
County, IN
73 C
#8363 Coarsegold
County, CA
73 C
#8364 Conifer
County, CO
73 C
#8365 Conneaut
County, OH
73 C
#8366 Converse
County, IN
73 C
#8367 Cooper
County, TX
73 C
#8368 Cottonwood
County, AZ
73 C
#8369 D Hanis
County, TX
73 C
#8370 Dadeville
County, AL
73 C
#8371 Deerfield
County, IL
73 C
#8372 Des Peres
County, MO
73 C
#8373 Eagle Butte
County, SD
73 C
#8374 East Berlin
County, PA
73 C
#8375 Elmwood Park Boro
County, NJ
73 C
#8376 Fairbury
County, IL
73 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.