City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#3985
Des Moines
County, WA
92 A
#3986 Devore
County, CA
92 A
#3987 Dille
County, WV
92 A
#3988 Dimmitt
County, TX
92 A
#3989 Dinuba
County, CA
92 A
#3990 Dripping Springs
County, TX
92 A
#3991 Dryden
County, NY
92 A
#3992 Dubois
County, WY
92 A
#3993 Dulles
County, VA
92 A
#3994 Duncannon
County, PA
92 A
#3995 East Camden
County, AR
92 A
#3996 East Williston
County, NY
92 A
#3997 Edgerton
County, WI
92 A
#3998 Edmore
County, MI
92 A
#3999 Effie
County, LA
92 A
#4000 El Paso
County, IL
92 A
#4001 El Prado
County, NM
92 A
#4002 Ellinwood
County, KS
92 A
#4003 Elloree
County, SC
92 A
#4004 Emerson
County, GA
92 A
#4005 Emery
County, SD
92 A
#4006 Escanaba
County, MI
92 A
#4007 Eunice
County, NM
92 A
#4008 Eupora
County, MS
92 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.