City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#10153
Tahlequah
County, OK
50 D
#10154 Thermal
County, CA
50 D
#10155 Towanda
County, PA
50 D
#10156 Vivian
County, LA
50 D
#10157 Waldo
County, AR
50 D
#10158 Waldwick
County, NJ
50 D
#10159 Waller
County, TX
50 D
#10160 Warren
County, VT
50 D
#10161 Waukesha
County, WI
50 D
#10162 Williams
County, AZ
50 D
#10163 Wilson
County, AR
50 D
#10164 Worth
County, MO
50 D
#10165 Arlington
County, GA
49 D
#10166 Bandera
County, TX
49 D
#10167 Broken Arrow
County, OK
49 D
#10168 Camp Verde
County, AZ
49 D
#10169 Capron
County, IL
49 D
#10170 Chandler
County, TX
49 D
#10171 Chipley
County, FL
49 D
#10172 Corning
County, CA
49 D
#10173 Eldorado
County, IL
49 D
#10174 Ferris
County, TX
49 D
#10175 Granite
County, OK
49 D
#10176 Greers Ferry
County, AR
49 D
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.