WaterQ

City Water Quality Rankings in Wisconsin

340 cities ranked by drinking water quality.

All States AL AK AZ AR CA CO CT DE FL GA HI ID IL IN IA KS KY LA ME MD MA MI MN MS MO MT NE NV NH NJ NM NY NC ND OH OK OR PA RI SC SD TN TX UT VT VA WA WV WI WY

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

Fairbanks, AK Fresno, CA San Jose, CA Sacramento, CA San Francisco, CA Houston, TX Fargo, ND
#1
Algoma
County, WI
100 A
#2
Baraboo
County, WI
100 A
#3
Bristol
County, WI
100 A
#4
Brodhead
County, WI
100 A
#5
Chippewa Falls
County, WI
100 A
#6
Cumberland
County, WI
100 A
#7
Durand
County, WI
100 A
#8
Eau Claire
County, WI
100 A
#9
Elkhart Lake
County, WI
100 A
#10
Florence
County, WI
100 A
#11
Fort Mccoy
County, WI
100 A
#12
Fredonia
County, WI
100 A
#13
Freedom
County, WI
100 A
#14
Greenville
County, WI
100 A
#15
Hartford
County, WI
100 A
#16
Hubertus
County, WI
100 A
#17
Keshena
County, WI
100 A
#18
Kewaskum
County, WI
100 A
#19
Kohler
County, WI
100 A
#20
Luck
County, WI
100 A
#21
Marion
County, WI
100 A
#22
Oconomowoc
County, WI
100 A
#23
Plover
County, WI
100 A
#24
Pulaski
County, WI
100 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.

Explore More Water Quality Data

State Rankings National Rankings Compare Cities All Water Systems