City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#9241
Carrollton
County, OH
60 C
#9242 Cecilia
County, LA
60 C
#9243 Country Club Hills
County, IL
60 C
#9244 Crystal River
County, FL
60 C
#9245 Denham Springs
County, LA
60 C
#9246 Dexter
County, NM
60 C
#9247 Diamond
County, IL
60 C
#9248 Dobson
County, NC
60 C
#9249 Dyer
County, AR
60 C
#9250 East Windsor Township
County, NJ
60 C
#9251 Frazeysburg
County, OH
60 C
#9252 Glouster
County, OH
60 C
#9253 Green Oaks
County, IL
60 C
#9254 Gurnee
County, IL
60 C
#9255 Hillsboro
County, IL
60 C
#9256 Jacksonville Beach
County, FL
60 C
#9257 Juncos
County, PR
60 C
#9258 Leesburg
County, FL
60 C
#9259 Lewisport
County, KY
60 C
#9260 Lewiston
County, UT
60 C
#9261 Lexington
County, IL
60 C
#9262 Lowell
County, NC
60 C
#9263 Luthersville
County, GA
60 C
#9264 Madison
County, GA
60 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.