City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#11425
Lordsburg
County, NM
0 F
#11426 Louisiana
County, MO
0 F
#11427 Louisville
County, KY
0 F
#11428 Loving
County, NM
0 F
#11429 Lumberport
County, WV
0 F
#11430 Madill
County, OK
0 F
#11431 Madison
County, NH
0 F
#11432 Madison
County, VA
0 F
#11433 Magdalena
County, NM
0 F
#11434 Mamou
County, LA
0 F
#11435 Mansfield
County, AR
0 F
#11436 Manson
County, IA
0 F
#11437 Maple Park
County, IL
0 F
#11438 Marion
County, LA
0 F
#11439 Marlin
County, TX
0 F
#11440 Matewan
County, WV
0 F
#11441 Mathis
County, TX
0 F
#11442 Maunaloa
County, HI
0 F
#11443 Maxwell
County, TX
0 F
#11444 Maysville
County, MO
0 F
#11445 Maysville
County, OK
0 F
#11446 Mccall
County, ID
0 F
#11447 Menard
County, IL
0 F
#11448 Metcalfe
County, MS
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.