City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#11329
Neah Bay
County, WA
0 F
#11330 Nederland
County, TX
0 F
#11331 Nelsonville
County, OH
0 F
#11332 Neon
County, KY
0 F
#11333 Nevada
County, IA
0 F
#11334 New Douglas
County, IL
0 F
#11335 New Haven
County, WV
0 F
#11336 New Martinsville
County, WV
0 F
#11337 Newellton
County, LA
0 F
#11338 Nichols Hills
County, OK
0 F
#11339 Nogales
County, AZ
0 F
#11340 Nome
County, AK
0 F
#11341 Norfolk
County, MA
0 F
#11342 North East
County, MD
0 F
#11343 North Pole
County, AK
0 F
#11344 Northern Cambria
County, PA
0 F
#11345 Oakdale
County, CT
0 F
#11346 Oakley
County, KS
0 F
#11347 Oceana
County, WV
0 F
#11348 Oilton
County, OK
0 F
#11349 Okarche
County, OK
0 F
#11350 Okay
County, OK
0 F
#11351 Okmulgee
County, OK
0 F
#11352 Oktaha
County, OK
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.