WaterQ

City Water Quality Rankings

11,696 cities ranked by drinking water quality.

Popular city water quality comparisons

Trending Cities

#3409
Mena
County, AR
94 A
#3410
Mendon
County, MA
94 A
#3411
Mendota
County, CA
94 A
#3412
Mentone
County, IN
94 A
#3413
Mentor
County, OH
94 A
#3414
Mexico
County, MO
94 A
#3415
Mexico
County, NY
94 A
#3416
Middlebury
County, VT
94 A
#3417
Middlesboro
County, KY
94 A
#3418
Midland
County, MI
94 A
#3419
Milton
County, DE
94 A
#3420
Milton
County, MA
94 A
#3421
Milton
County, NY
94 A
#3422
Mineola
County, TX
94 A
#3423
Minonk
County, IL
94 A
#3424
Missoula
County, MT
94 A
#3425
Monroeville
County, IN
94 A
#3426
Monterey
County, LA
94 A
#3427
Moody Afb
County, GA
94 A
#3428
Morganton
County, GA
94 A
#3429
Morgantown
County, IN
94 A
#3430
Morgantown
County, PA
94 A
#3431
Morro Bay
County, CA
94 A
#3432
Morrow
County, GA
94 A

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.

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