City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#289
Douglas
County, WY
100 A
#290 Douglasville
County, GA
100 A
#291 Dover
County, NH
100 A
#292 Dresden
County, TN
100 A
#293 Dublin
County, CA
100 A
#294 Dublin
County, GA
100 A
#295 Dublin
County, VA
100 A
#296 Dumas
County, AR
100 A
#297 Duncanville
County, TX
100 A
#298 Durand
County, WI
100 A
#299 Durant
County, IA
100 A
#300 Duvall
County, WA
100 A
#301 Easley
County, SC
100 A
#302 East China
County, MI
100 A
#303 East Freedom
County, PA
100 A
#304 East Grand Rapids
County, MI
100 A
#305 East Millinocket
County, ME
100 A
#306 East Rutherford
County, NJ
100 A
#307 East Tawas
County, MI
100 A
#308 Easton
County, PA
100 A
#309 Eastover
County, SC
100 A
#310 Eastpointe
County, MI
100 A
#311 Eaton
County, OH
100 A
#312 Eau Claire
County, WI
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.