City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#1201
Colville
County, WA
99 A
#1202 Dallas
County, GA
99 A
#1203 Dawn
County, MO
99 A
#1204 Denton
County, MD
99 A
#1205 Dunkirk
County, MD
99 A
#1206 Dupont
County, WA
99 A
#1207 Electric City
County, WA
99 A
#1208 Elma
County, WA
99 A
#1209 Encinitas
County, CA
99 A
#1210 Enon
County, OH
99 A
#1211 Enterprise
County, OR
99 A
#1212 Entiat
County, WA
99 A
#1213 Evansville
County, IN
99 A
#1214 Ewing
County, MO
99 A
#1215 Fair Haven
County, NY
99 A
#1216 Farmville
County, NC
99 A
#1217 Fayette
County, OH
99 A
#1218 Ferndale
County, WA
99 A
#1219 Forsyth
County, GA
99 A
#1220 Franklin Furnace
County, OH
99 A
#1221 Fredericksburg
County, VA
99 A
#1222 Garden City
County, MO
99 A
#1223 Garrison
County, ND
99 A
#1224 Goldendale
County, WA
99 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.