City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#11089
Disney
County, OK
0 F
#11090 Dona Ana
County, NM
0 F
#11091 Dover
County, NJ
0 F
#11092 Dubach
County, LA
0 F
#11093 Dublin
County, TX
0 F
#11094 Duncan
County, OK
0 F
#11095 Dundee
County, FL
0 F
#11096 Durbin
County, WV
0 F
#11097 East Tawakoni
County, TX
0 F
#11098 Eatonville
County, FL
0 F
#11099 Edinburg
County, IL
0 F
#11100 Edwards
County, MS
0 F
#11101 Egan
County, LA
0 F
#11102 Eielson Afb
County, AK
0 F
#11103 El Cajon
County, CA
0 F
#11104 Ellerbe
County, NC
0 F
#11105 Ellsworth
County, PA
0 F
#11106 Elm City
County, NC
0 F
#11107 Elm Grove
County, LA
0 F
#11108 Emory
County, TX
0 F
#11109 Enfield
County, NH
0 F
#11110 Enterprise
County, UT
0 F
#11111 Erda
County, UT
0 F
#11112 Espanola
County, NM
0 F
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.