City Water Quality Rankings in Wisconsin
269 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#241
Odanah
County, WI
71 C
#242 Monona
County, WI
70 C
#243 Lodi
County, WI
69 C
#244 Cambridge
County, WI
68 C
#245 Darlington
County, WI
68 C
#246 Montello
County, WI
68 C
#247 Glenwood City
County, WI
66 C
#248 Rio
County, WI
66 C
#249 Sherwood
County, WI
65 C
#250 Sharon
County, WI
64 C
#251 Bayfield
County, WI
60 C
#252 Grafton
County, WI
58 D
#253 Mineral Point
County, WI
57 D
#254 Princeton
County, WI
57 D
#255 Crandon
County, WI
53 D
#256 Green Bay
County, WI
51 D
#257 Juneau
County, WI
50 D
#258 Williams Bay
County, WI
50 D
#259 Elkhorn
County, WI
44 F
#260 Thorp
County, WI
40 F
#261 Pell Lake
County, WI
30 F
#262 Weyauwega
County, WI
29 F
#263 Antigo
County, WI
9 F
#264 Ashland
County, WI
0 F
Frequently Asked Questions
How are city water quality rankings calculated in Wisconsin?
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 cities in Wisconsin?
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.