City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#4873
Madison
County, MS
90 A
#4874 Magnolia
County, TX
90 A
#4875 Manassas
County, VA
90 A
#4876 Manitowoc
County, WI
90 A
#4877 Marianna
County, FL
90 A
#4878 Marion
County, TX
90 A
#4879 Martin
County, GA
90 A
#4880 Mason
County, MI
90 A
#4881 Massillon
County, OH
90 A
#4882 Mayking
County, KY
90 A
#4883 Mcgraw
County, NY
90 A
#4884 Meadowlakes
County, TX
90 A
#4885 Medicine Lodge
County, KS
90 A
#4886 Memphis
County, MI
90 A
#4887 Merced
County, CA
90 A
#4888 Mercury
County, NV
90 A
#4889 Methuen
County, MA
90 A
#4890 Michie
County, TN
90 A
#4891 Middletown
County, IA
90 A
#4892 Midlothian
County, TX
90 A
#4893 Momence
County, IL
90 A
#4894 Monterey
County, TN
90 A
#4895 Morenci
County, AZ
90 A
#4896 Morgan
County, UT
90 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.