WaterQ

City Water Quality Rankings in Wisconsin

269 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 → Brussels, WI vs Cornell, WI Compare → Cumberland, WI vs Durand, WI Compare →

Trending Cities

Fairbanks, AK Fresno, CA San Jose, CA Sacramento, CA San Francisco, CA Houston, TX Fargo, ND
#97
New Holstein
County, WI
94 A
#98
Oak Creek
County, WI
94 A
#99
Oneida
County, WI
94 A
#100
Port Edwards
County, WI
94 A
#101
Reedsville
County, WI
94 A
#102
Shorewood
County, WI
94 A
#103
Stanley
County, WI
94 A
#104
Wales
County, WI
94 A
#105
Wauwatosa
County, WI
94 A
#106
Edgerton
County, WI
93 A
#107
Grantsburg
County, WI
93 A
#108
Black Earth
County, WI
92 A
#109
Bonduel
County, WI
92 A
#110
Boyceville
County, WI
92 A
#111
Brown Deer
County, WI
92 A
#112
Butler
County, WI
92 A
#113
Darien
County, WI
92 A
#114
Fennimore
County, WI
92 A
#115
Glendale
County, WI
92 A
#116
Greenwood
County, WI
92 A
#117
Hustisford
County, WI
92 A
#118
Lancaster
County, WI
92 A
#119
Marshall
County, WI
92 A
#120
New London
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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