City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#8089
Alpine
County, TX
75 B
#8090 Anderson
County, MO
75 B
#8091 Arthurdale
County, WV
75 B
#8092 Bloomington
County, IL
75 B
#8093 Boonton
County, NJ
75 B
#8094 Brewster
County, MA
75 B
#8095 Bronston
County, KY
75 B
#8096 Carson City
County, NV
75 B
#8097 Cherryvale
County, KS
75 B
#8098 Ciales
County, PR
75 B
#8099 Dayton
County, TN
75 B
#8100 Deland
County, FL
75 B
#8101 Dexter
County, NY
75 B
#8102 East Dubuque
County, IL
75 B
#8103 Elephant Butte
County, NM
75 B
#8104 Excel
County, AL
75 B
#8105 Fairview
County, PA
75 B
#8106 Fernley
County, NV
75 B
#8107 Garfield
County, NM
75 B
#8108 Gas City
County, IN
75 B
#8109 Genoa
County, OH
75 B
#8110 Glen Ellyn
County, IL
75 B
#8111 Golden Valley
County, AZ
75 B
#8112 Grabill
County, IN
75 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.