City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#11305
Montezuma
County, IN
0 F
#11306 Montgomery
County, LA
0 F
#11307 Moore
County, OK
0 F
#11308 Morris
County, OK
0 F
#11309 Moss
County, TN
0 F
#11310 Mounds
County, OK
0 F
#11311 Mount Ayr
County, IA
0 F
#11312 Mount Hope
County, WV
0 F
#11313 Mount Ida
County, AR
0 F
#11314 Mount Pleasant
County, AR
0 F
#11315 Mount Storm
County, WV
0 F
#11316 Mount Zion
County, IL
0 F
#11317 Mountain City
County, TN
0 F
#11318 Mountain Home
County, ID
0 F
#11319 Mountainair
County, NM
0 F
#11320 Mt Carmel
County, IL
0 F
#11321 Mt Gilead
County, NC
0 F
#11322 Mt. Pleasant
County, NC
0 F
#11323 Mullens
County, WV
0 F
#11324 Murray
County, KY
0 F
#11325 Nanty Glo
County, PA
0 F
#11326 Naples
County, TX
0 F
#11327 Naugatuck
County, WV
0 F
#11328 Naugatuck, Wv
County, WV
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.