City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#1153
Windsor
County, NY
100 A
#1154 Winfield
County, IA
100 A
#1155 Wingate
County, IN
100 A
#1156 Wingdale
County, NY
100 A
#1157 Winston
County, OR
100 A
#1158 Winters
County, CA
100 A
#1159 Winterset
County, IA
100 A
#1160 Winthrop
County, ME
100 A
#1161 Winton
County, NC
100 A
#1162 Wittenberg
County, WI
100 A
#1163 Wixom
County, MI
100 A
#1164 Wolcott
County, NY
100 A
#1165 Wolf Point
County, MT
100 A
#1166 Woodinville
County, WA
100 A
#1167 Woodruff
County, SC
100 A
#1168 Woodworth
County, LA
100 A
#1169 Wooster
County, OH
100 A
#1170 Wpafb
County, OH
100 A
#1171 Wright City
County, MO
100 A
#1172 Wyandotte
County, OK
100 A
#1173 Wyandotte
County, MI
100 A
#1174 Wyoming
County, MN
100 A
#1175 Yelm
County, WA
100 A
#1176 York
County, ME
100 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.