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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#49
West Allis
County, WI
98 A
#50
West Salem
County, WI
98 A
#51
Ashwaubenon
County, WI
97 A
#52
De Pere
County, WI
97 A
#53
Freedom
County, WI
97 A
#54
Lac Du Flambeau
County, WI
97 A
#55
Schofield
County, WI
97 A
#56
Baldwin
County, WI
96 A
#57
Barron
County, WI
96 A
#58
Beaver Dam
County, WI
96 A
#59
Boscobel
County, WI
96 A
#60
Bowler
County, WI
96 A
#61
Clinton
County, WI
96 A
#62
Hobart
County, WI
96 A
#63
Luxemburg
County, WI
96 A
#64
Marinette
County, WI
96 A
#65
Marshfield
County, WI
96 A
#66
Mcfarland
County, WI
96 A
#67
Mequon
County, WI
96 A
#68
Milwaukee
County, WI
96 A
#69
Mishicot
County, WI
96 A
#70
Mount Horeb
County, WI
96 A
#71
Nekoosa
County, WI
96 A
#72
New Franken
County, WI
96 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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