City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#553
Maple Valley
County, WA
100 A
#554 Maplesville
County, AL
100 A
#555 Marietta
County, GA
100 A
#556 Marina
County, CA
100 A
#557 Marion
County, WI
100 A
#558 Marsing
County, ID
100 A
#559 Martinez
County, CA
100 A
#560 Marysville
County, CA
100 A
#561 Maywood
County, CA
100 A
#562 Mccaysville
County, GA
100 A
#563 Mcconnell Afb
County, KS
100 A
#564 Mccook
County, NE
100 A
#565 Mcdermott
County, OH
100 A
#566 Mckittrick
County, CA
100 A
#567 Mcloud
County, OK
100 A
#568 Mcrae Helena
County, GA
100 A
#569 Medical Lake
County, WA
100 A
#570 Meeker
County, CO
100 A
#571 Memphis
County, TN
100 A
#572 Menahga
County, MN
100 A
#573 Merrill
County, MI
100 A
#574 Merrimack
County, NH
100 A
#575 Merton
County, WI
100 A
#576 Middleport
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.