City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#7777
Beaumont
County, MS
77 B
#7778 Bedford
County, PA
77 B
#7779 Bernville
County, PA
77 B
#7780 Blandon
County, PA
77 B
#7781 Bloomingdale
County, IL
77 B
#7782 Bruce
County, MS
77 B
#7783 Brundige
County, AL
77 B
#7784 Buna
County, TX
77 B
#7785 Carnegie
County, OK
77 B
#7786 Carthage
County, NY
77 B
#7787 Chaparral
County, NM
77 B
#7788 Cherry Valley
County, IL
77 B
#7789 Chouteau
County, OK
77 B
#7790 Chrisney
County, IN
77 B
#7791 Clara
County, MS
77 B
#7792 Clarksville
County, TN
77 B
#7793 Clifton Springs
County, NY
77 B
#7794 Clinton
County, TN
77 B
#7795 Coatesville
County, PA
77 B
#7796 Conyngham
County, PA
77 B
#7797 Davisboro
County, GA
77 B
#7798 Dawson
County, MN
77 B
#7799 Delta
County, OH
77 B
#7800 Dyer
County, TN
77 B
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.