City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#9169
Arcola
County, IL
61 C
#9170 Ashland
County, MA
61 C
#9171 Atwater
County, OH
61 C
#9172 Barry
County, IL
61 C
#9173 Bartlesville
County, OK
61 C
#9174 Boonville
County, IN
61 C
#9175 Cairo
County, NY
61 C
#9176 Campton
County, NH
61 C
#9177 Carbondale
County, KS
61 C
#9178 Carpentersville
County, IL
61 C
#9179 Charleston
County, IL
61 C
#9180 Claysburg
County, PA
61 C
#9181 Colorado City
County, TX
61 C
#9182 Doerun
County, GA
61 C
#9183 Douglas
County, AZ
61 C
#9184 East Greenville
County, PA
61 C
#9185 East Point
County, GA
61 C
#9186 Fort Mitchell
County, KY
61 C
#9187 Germantown
County, IL
61 C
#9188 Hart
County, MI
61 C
#9189 Haysville
County, KS
61 C
#9190 Jackson
County, KY
61 C
#9191 Kingman
County, AZ
61 C
#9192 Kingston
County, IL
61 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.