City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#241
Dublin
County, VA
100 A
#242 Duncanville
County, TX
100 A
#243 Durand
County, WI
100 A
#244 Durant
County, IA
100 A
#245 Duvall
County, WA
100 A
#246 Easley
County, SC
100 A
#247 East China
County, MI
100 A
#248 East Millinocket
County, ME
100 A
#249 East Rutherford
County, NJ
100 A
#250 East Tawas
County, MI
100 A
#251 Easton
County, PA
100 A
#252 Eastpointe
County, MI
100 A
#253 Eaton
County, OH
100 A
#254 Eden Prairie
County, MN
100 A
#255 Eden Valley
County, MN
100 A
#256 Edgefield
County, SC
100 A
#257 Edgewater
County, CO
100 A
#258 Edgewood
County, WA
100 A
#259 Edinburgh
County, IN
100 A
#260 El Segundo
County, CA
100 A
#261 Eldora
County, IA
100 A
#262 Electric City
County, WA
100 A
#263 Elgin
County, MN
100 A
#264 Elk Grove
County, CA
100 A
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.