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

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#25
Richfield
County, WI
100 A
#26
Somers
County, WI
100 A
#27
Sturgeon Bay
County, WI
100 A
#28
Suamico
County, WI
100 A
#29
Trempealeau
County, WI
100 A
#30
Wautoma
County, WI
100 A
#31
Wilmot
County, WI
100 A
#32
Wittenberg
County, WI
100 A
#33
Shawano
County, WI
99 A
#34
Arcadia
County, WI
98 A
#35
Black Creek
County, WI
98 A
#36
Burlington
County, WI
98 A
#37
Dane
County, WI
98 A
#38
Gillett
County, WI
98 A
#39
Kenosha
County, WI
98 A
#40
Lake Geneva
County, WI
98 A
#41
Palmyra
County, WI
98 A
#42
Platteville
County, WI
98 A
#43
Portage
County, WI
98 A
#44
Seymour
County, WI
98 A
#45
Sparta
County, WI
98 A
#46
Wausau
County, WI
98 A
#47
West Allis
County, WI
98 A
#48
West Salem
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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