WaterQ

City Water Quality Rankings in Wisconsin

340 cities ranked by drinking water quality.

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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
#121
Rothschild
County, WI
93 A
#122
Stevens Point
County, WI
93 A
#123
Wales
County, WI
93 A
#124
Bonduel
County, WI
92 A
#125
Brown Deer
County, WI
92 A
#126
Butler
County, WI
92 A
#127
Colby
County, WI
92 A
#128
Darien
County, WI
92 A
#129
Edgerton
County, WI
92 A
#130
Fennimore
County, WI
92 A
#131
Greenwood
County, WI
92 A
#132
Hustisford
County, WI
92 A
#133
Lancaster
County, WI
92 A
#134
Marshall
County, WI
92 A
#135
Mukwonago
County, WI
92 A
#136
New London
County, WI
92 A
#137
Oostburg
County, WI
92 A
#138
Redgranite
County, WI
92 A
#139
Reedsburg
County, WI
92 A
#140
Reedsville
County, WI
92 A
#141
Sauk City
County, WI
92 A
#142
Turtle Lake
County, WI
92 A
#143
Viroqua
County, WI
92 A
#144
Waupun
County, WI
92 A

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.

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