WaterQ

City Water Quality Rankings in Wisconsin

340 cities ranked by drinking water quality.

All States AL AK AZ AR CA CO CT DE FL GA HI ID IL IN IA KS KY LA ME MD MA MI MN MS MO MT NE NV NH NJ NM NY NC ND OH OK OR PA RI SC SD TN TX UT VT VA WA WV WI WY

Popular city water quality comparisons

Algoma, WI vs Baraboo, WI Compare → Bristol, WI vs Brodhead, WI Compare → Chippewa Falls, WI vs Cumberland, WI Compare → Durand, WI vs Eau Claire, WI Compare →

Trending Cities

Fairbanks, AK Fresno, CA San Jose, CA Sacramento, CA San Francisco, CA Houston, TX Fargo, ND
#193
Elroy
County, WI
88 B
#194
Fitchburg
County, WI
88 B
#195
Horicon
County, WI
88 B
#196
Iola
County, WI
88 B
#197
Menomonee Falls
County, WI
88 B
#198
Mondovi
County, WI
88 B
#199
Monroe
County, WI
88 B
#200
Muskego
County, WI
88 B
#201
Oakfield
County, WI
88 B
#202
Oregon
County, WI
88 B
#203
Park Falls
County, WI
88 B
#204
Spencer
County, WI
88 B
#205
Whitewater
County, WI
88 B
#206
Amherst
County, WI
87 B
#207
Edgar
County, WI
87 B
#208
Green Lake
County, WI
87 B
#209
Hobart
County, WI
87 B
#210
Monticello
County, WI
87 B
#211
Oconto Falls
County, WI
87 B
#212
Onalaska
County, WI
87 B
#213
Racine
County, WI
87 B
#214
Belleville
County, WI
86 B
#215
Brillion
County, WI
86 B
#216
Deerfield
County, WI
86 B

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.

Explore More Water Quality Data

State Rankings National Rankings Compare Cities All Water Systems