City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#697
Mesquite
County, TX
100 A
#698 Middlebury
County, IN
100 A
#699 Middleport
County, NY
100 A
#700 Middletown
County, MD
100 A
#701 Milan
County, TN
100 A
#702 Milano
County, TX
100 A
#703 Millbrae
County, CA
100 A
#704 Millerton
County, NY
100 A
#705 Minden
County, NE
100 A
#706 Minerva
County, OH
100 A
#707 Minneapolis
County, MN
100 A
#708 Minnetonka
County, MN
100 A
#709 Minnetrista
County, MN
100 A
#710 Mitchells
County, VA
100 A
#711 Moca
County, PR
100 A
#712 Moffett Field
County, CA
100 A
#713 Mojave
County, CA
100 A
#714 Monroeville
County, AL
100 A
#715 Monroeville
County, OH
100 A
#716 Montevideo
County, MN
100 A
#717 Mooresville
County, IN
100 A
#718 Moorpark
County, CA
100 A
#719 Moravia
County, NY
100 A
#720 Moreau
County, NY
100 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.