City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#673
Maplesville
County, AL
100 A
#674 Marietta
County, GA
100 A
#675 Marina
County, CA
100 A
#676 Marion
County, WI
100 A
#677 Maroa
County, IL
100 A
#678 Marsing
County, ID
100 A
#679 Martinez
County, CA
100 A
#680 Marysville
County, CA
100 A
#681 Maury City
County, TN
100 A
#682 Maywood
County, CA
100 A
#683 Mccaysville
County, GA
100 A
#684 Mcconnell Afb
County, KS
100 A
#685 Mccook
County, NE
100 A
#686 Mcdermott
County, OH
100 A
#687 Mckittrick
County, CA
100 A
#688 Mcpherson
County, KS
100 A
#689 Mcrae Helena
County, GA
100 A
#690 Meadows Place
County, TX
100 A
#691 Medical Lake
County, WA
100 A
#692 Meeker
County, CO
100 A
#693 Memphis
County, TN
100 A
#694 Menahga
County, MN
100 A
#695 Merrill
County, MI
100 A
#696 Merrimack
County, NH
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.