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

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#25
Suamico
County, WI
100 A
#26
Wautoma
County, WI
100 A
#27
Wilmot
County, WI
100 A
#28
Wittenberg
County, WI
100 A
#29
Shawano
County, WI
99 A
#30
Belleville
County, WI
98 A
#31
Black Creek
County, WI
98 A
#32
Blair
County, WI
98 A
#33
Brookfield
County, WI
98 A
#34
Burlington
County, WI
98 A
#35
Dane
County, WI
98 A
#36
Fox Point
County, WI
98 A
#37
Gillett
County, WI
98 A
#38
Hubertus
County, WI
98 A
#39
Kenosha
County, WI
98 A
#40
Luck
County, WI
98 A
#41
New Richmond
County, WI
98 A
#42
Oshkosh
County, WI
98 A
#43
Palmyra
County, WI
98 A
#44
Platteville
County, WI
98 A
#45
Portage
County, WI
98 A
#46
South Milwaukee
County, WI
98 A
#47
Stevens Point
County, WI
98 A
#48
Wausau
County, WI
98 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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