City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#2905
Deer Park
County, WA
95 A
#2906 Deshler
County, OH
95 A
#2907 Dickinson
County, ND
95 A
#2908 Dillon
County, SC
95 A
#2909 Eagle Grove
County, IA
95 A
#2910 Eddyville
County, KY
95 A
#2911 Edina
County, MN
95 A
#2912 El Monte
County, CA
95 A
#2913 Elgin
County, OR
95 A
#2914 Elkhart
County, IN
95 A
#2915 Excelsior
County, MN
95 A
#2916 Fallbrook
County, CA
95 A
#2917 Farmingdale
County, NY
95 A
#2918 Forney
County, TX
95 A
#2919 Fort Edward
County, NY
95 A
#2920 Fort Montgomery
County, NY
95 A
#2921 Frankfort
County, IN
95 A
#2922 Fridley
County, MN
95 A
#2923 Gaffney
County, SC
95 A
#2924 Gaston
County, SC
95 A
#2925 Glendale
County, WI
95 A
#2926 Gooding
County, ID
95 A
#2927 Granby
County, CO
95 A
#2928 Grand Junction
County, CO
95 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.