City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#10177
Stanley
County, VA
42 F
#10178 Stokes
County, NC
42 F
#10179 Toccoa
County, GA
42 F
#10180 Toledo
County, IA
42 F
#10181 Waldron
County, AR
42 F
#10182 Wasilla
County, AK
42 F
#10183 Wentworth
County, NC
42 F
#10184 Williams
County, AZ
42 F
#10185 Winters
County, TX
42 F
#10186 Woodlawn
County, TX
42 F
#10187 Zellwood
County, FL
42 F
#10188 Alto
County, TX
41 F
#10189 Augusta
County, WV
41 F
#10190 Birdsboro
County, PA
41 F
#10191 Bloomingdale Boro
County, NJ
41 F
#10192 Chilton
County, TX
41 F
#10193 Clinton
County, PA
41 F
#10194 Dwight
County, IL
41 F
#10195 Ebensburg
County, PA
41 F
#10196 Eden
County, UT
41 F
#10197 Glasgow
County, PA
41 F
#10198 Goodfellow Afb
County, TX
41 F
#10199 Greenville
County, PA
41 F
#10200 Havasu Lake
County, CA
41 F
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.