City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#10273
Macks Creek
County, MO
39 F
#10274 Mechanicville
County, NY
39 F
#10275 Moody
County, TX
39 F
#10276 Mora
County, NM
39 F
#10277 New Freedom
County, PA
39 F
#10278 Okeechobee
County, FL
39 F
#10279 Ridgely
County, TN
39 F
#10280 Seguin
County, TX
39 F
#10281 St. Jacob
County, IL
39 F
#10282 Wailuku
County, HI
39 F
#10283 Wendover
County, UT
39 F
#10284 Ballard
County, UT
38 F
#10285 Barrington
County, IL
38 F
#10286 Belle Vernon
County, PA
38 F
#10287 Chillicothe
County, IL
38 F
#10288 Dilley
County, TX
38 F
#10289 Doyline
County, LA
38 F
#10290 Falcon Heights
County, TX
38 F
#10291 Goodyear
County, AZ
38 F
#10292 Hanson
County, KY
38 F
#10293 Henryetta
County, OK
38 F
#10294 Hope
County, AR
38 F
#10295 Huntsville
County, UT
38 F
#10296 Kermit
County, TX
38 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.