City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#11473
Mullens
County, WV
0 F
#11474 Murray
County, KY
0 F
#11475 Nanty Glo
County, PA
0 F
#11476 Naples
County, TX
0 F
#11477 Naugatuck
County, WV
0 F
#11478 Naugatuck, Wv
County, WV
0 F
#11479 Neah Bay
County, WA
0 F
#11480 Nederland
County, TX
0 F
#11481 Nelsonville
County, OH
0 F
#11482 Neon
County, KY
0 F
#11483 Nevada
County, IA
0 F
#11484 New Martinsville
County, WV
0 F
#11485 Newellton
County, LA
0 F
#11486 Nichols Hills
County, OK
0 F
#11487 Nogales
County, AZ
0 F
#11488 Nome
County, AK
0 F
#11489 Norfolk
County, MA
0 F
#11490 North East
County, MD
0 F
#11491 Northern Cambria
County, PA
0 F
#11492 Oakdale
County, CT
0 F
#11493 Oakley
County, KS
0 F
#11494 Oceana
County, WV
0 F
#11495 Oil City
County, LA
0 F
#11496 Oilton
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.