City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#6841
Covington
County, LA
82 B
#6842 Creswell
County, OR
82 B
#6843 Dardanelle
County, AR
82 B
#6844 Dawsonville
County, GA
82 B
#6845 Decatur
County, TN
82 B
#6846 Dennis
County, AL
82 B
#6847 Depue
County, IL
82 B
#6848 Dexter
County, GA
82 B
#6849 Dillsburg
County, PA
82 B
#6850 Dover Plains
County, NY
82 B
#6851 Dysart
County, IA
82 B
#6852 East Lansing
County, MI
82 B
#6853 Eastport
County, ME
82 B
#6854 El Dorado
County, AR
82 B
#6855 Elkhart
County, TX
82 B
#6856 Endicott
County, NY
82 B
#6857 Enfield
County, CT
82 B
#6858 Erin
County, TN
82 B
#6859 Evansville
County, WI
82 B
#6860 Fairfield
County, CA
82 B
#6861 Fairland
County, OK
82 B
#6862 Fairmont
County, NC
82 B
#6863 Flat Rock
County, MI
82 B
#6864 Fordyce
County, AR
82 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.