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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#73
Mishicot
County, WI
96 A
#74
Mount Horeb
County, WI
96 A
#75
New Franken
County, WI
96 A
#76
Niagara
County, WI
96 A
#77
Omro
County, WI
96 A
#78
Prairie Du Chien
County, WI
96 A
#79
Roberts
County, WI
96 A
#80
Sheboygan Falls
County, WI
96 A
#81
Shullsburg
County, WI
96 A
#82
Sister Bay
County, WI
96 A
#83
Stoughton
County, WI
96 A
#84
Appleton
County, WI
95 A
#85
Glendale
County, WI
95 A
#86
Menasha
County, WI
95 A
#87
Milwaukee
County, WI
95 A
#88
Neillsville
County, WI
95 A
#89
Nekoosa
County, WI
95 A
#90
Oneida
County, WI
95 A
#91
Spring Green
County, WI
95 A
#92
Beloit
County, WI
94 A
#93
Berlin
County, WI
94 A
#94
Campbellsport
County, WI
94 A
#95
Cedar Grove
County, WI
94 A
#96
Chetek
County, WI
94 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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