City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#2329
Dayton
County, NV
96 A
#2330 Deer Trail
County, CO
96 A
#2331 Dequincy
County, LA
96 A
#2332 Desloge
County, MO
96 A
#2333 Deville
County, LA
96 A
#2334 Dewitt
County, IA
96 A
#2335 Dexter
County, ME
96 A
#2336 Dillon
County, MT
96 A
#2337 Doylestown
County, OH
96 A
#2338 Dunn
County, NC
96 A
#2339 Duson
County, LA
96 A
#2340 Dyersburg
County, TN
96 A
#2341 Eagle
County, ID
96 A
#2342 East Bend
County, NC
96 A
#2343 East Palestine
County, OH
96 A
#2344 Eastman
County, GA
96 A
#2345 Eastsound
County, WA
96 A
#2346 Egg Harbor Township
County, NJ
96 A
#2347 El Jobean
County, FL
96 A
#2348 Elizabeth
County, CO
96 A
#2349 Elizabeth Lake
County, CA
96 A
#2350 Elk Point
County, SD
96 A
#2351 Elkin
County, NC
96 A
#2352 Elkton
County, VA
96 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.