City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#11281
Marion
County, LA
0 F
#11282 Marion
County, AR
0 F
#11283 Marlin
County, TX
0 F
#11284 Matewan
County, WV
0 F
#11285 Mathis
County, TX
0 F
#11286 Maunaloa
County, HI
0 F
#11287 Maxwell
County, TX
0 F
#11288 Maysville
County, OK
0 F
#11289 Maysville
County, MO
0 F
#11290 Maywood
County, IL
0 F
#11291 Mccall
County, ID
0 F
#11292 Menard
County, IL
0 F
#11293 Metlakatla
County, AK
0 F
#11294 Mexia
County, AL
0 F
#11295 Meyersdale
County, PA
0 F
#11296 Middlebourne
County, WV
0 F
#11297 Midland
County, PA
0 F
#11298 Midland City
County, AL
0 F
#11299 Milan
County, IL
0 F
#11300 Milford
County, OH
0 F
#11301 Millersview
County, TX
0 F
#11302 Milltown
County, NJ
0 F
#11303 Monon
County, IN
0 F
#11304 Monroe
County, MO
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.