June 17, 2026
Bacteria & Pathogens in Wisconsin Drinking Water 2026
Bacteria & Pathogens in Wisconsin Drinking Water 2026
Bacteria & Pathogens contamination has been detected in drinking water systems across Wisconsin. Bacteria including E. coli and coliforms indicate sewage contamination and can cause gastrointestinal illness. Our analysis of Wisconsin water quality reports found Bacteria & Pathogens present in 113 cities and water systems statewide. If you live in one of these communities, a certified home filter can significantly reduce your exposure -- browse Bacteria & Pathogens filters at PureWaterGuys.
Cities in Wisconsin with Bacteria & Pathogens Detected
The following 113 water systems in Wisconsin reported Bacteria & Pathogens in their annual water quality reports. Click any city to read the full report.
| City / Water System | Water Quality Report |
|---|---|
| Alma Center Wi Water Quality Report 2026 | View Report |
| Balsam Lake Wi Water Quality Report 2026 | View Report |
| Benton Wi Water Quality Report 2026 | View Report |
| Bloomington Wi Water Quality Report 2026 | View Report |
| Boca Raton Wi Water Quality Report 2026 | View Report |
| Brookfield Wi Water Quality Report 2026 | View Report |
| Brown Deer Wi Water Quality Report 2026 | View Report |
| Browntown Wi Water Quality Report 2026 | View Report |
| Bruce Wi Water Quality Report 2026 | View Report |
| Cameron Wi Water Quality Report 2026 | View Report |
| Cassville Wi Water Quality Report 2026 | View Report |
| Cedaredge Wi Water Quality Report 2026 | View Report |
| Champlin Wi Water Quality Report 2026 | View Report |
| Charles Town Wi Water Quality Report 2026 | View Report |
| Clyman Wi Water Quality Report 2026 | View Report |
| Colfax Wi Water Quality Report 2026 | View Report |
| Cumberland Wi Water Quality Report 2026 | View Report |
| Curtiss Wi Water Quality Report 2026 | View Report |
| Dalton Wi Water Quality Report 2026 | View Report |
| Danbury Wi Water Quality Report 2026 | View Report |
| Darlington Wi Water Quality Report 2026 | View Report |
| Dodge Wi Water Quality Report 2026 | View Report |
| Dousman Wi Water Quality Report 2026 | View Report |
| Dresser Wi Water Quality Report 2026 | View Report |
| Elcho Wi Water Quality Report 2026 | View Report |
| Elkhart Lake Wi Water Quality Report 2026 | View Report |
| Ellsworth Wi Water Quality Report 2026 | View Report |
| Elroy Wi Water Quality Report 2026 | View Report |
| Exeland Wi Water Quality Report 2026 | View Report |
| Fairchild Wi Water Quality Report 2026 | View Report |
| Fall Creek Wi Water Quality Report 2026 | View Report |
| Fall River Wi Water Quality Report 2026 | View Report |
| Farmington Hills Wi Water Quality Report 2026 | View Report |
| Fort Mccoy Wi Water Quality Report 2026 | View Report |
| Friendship Wi Water Quality Report 2026 | View Report |
| Friesland Wi Water Quality Report 2026 | View Report |
| Genoa Wi Water Quality Report 2026 | View Report |
| Glen Flora Wi Water Quality Report 2026 | View Report |
| Goodman Wi Water Quality Report 2026 | View Report |
| Grand Chute Wi Water Quality Report 2026 | View Report |
| Gratiot Wi Water Quality Report 2026 | View Report |
| Greendale Wi Water Quality Report 2026 | View Report |
| Hammond Wi Water Quality Report 2026 | View Report |
| Hartland Wi Water Quality Report 2026 | View Report |
| Hawthorn Woods Wi Water Quality Report 2026 | View Report |
| Hayward Wi Water Quality Report 2026 | View Report |
| Highbridge Wi Water Quality Report 2026 | View Report |
| Hollandale Wi Water Quality Report 2026 | View Report |
| Iron Belt Wi Water Quality Report 2026 | View Report |
| Iron River Wi Water Quality Report 2026 | View Report |
| Ixonia Wi Water Quality Report 2026 | View Report |
| Kaukauna Wi Water Quality Report 2026 | View Report |
| Ladysmith Wi Water Quality Report 2026 | View Report |
| Lancaster Wi Water Quality Report 2026 | View Report |
| Lannon Wi Water Quality Report 2026 | View Report |
| Laona Wi Water Quality Report 2026 | View Report |
| Libertyville Wi Water Quality Report 2026 | View Report |
| Linconwood Wi Water Quality Report 2026 | View Report |
| Livingston Wi Water Quality Report 2026 | View Report |
| Lone Rock Wi Water Quality Report 2026 | View Report |
| Loyal Wi Water Quality Report 2026 | View Report |
| Luck Wi Water Quality Report 2026 | View Report |
| Mattoon Wi Water Quality Report 2026 | View Report |
| Mellen Wi Water Quality Report 2026 | View Report |
| Melrose Wi Water Quality Report 2026 | View Report |
| Menomonee Falls Wi Water Quality Report 2026 | View Report |
| Menomonie Wi Water Quality Report 2026 | View Report |
| Merrill Wi Water Quality Report 2026 | View Report |
| Middleton Wi Water Quality Report 2026 | View Report |
| Milltown Wi Water Quality Report 2026 | View Report |
| Mineral Point Wi Water Quality Report 2026 | View Report |
| Minocqua Wi Water Quality Report 2026 | View Report |
| Monroe Wi Water Quality Report 2026 | View Report |
| Montreal Wi Water Quality Report 2026 | View Report |
| Mt Sterling Wi Water Quality Report 2026 | View Report |
| Neenah Wi Water Quality Report 2026 | View Report |
| Nekoosa Wi Water Quality Report 2026 | View Report |
| New Auburn Wi Water Quality Report 2026 | View Report |
| Onalaska Wi Water Quality Report 2026 | View Report |
| Orem Wi Water Quality Report 2026 | View Report |
| Orlando Wi Water Quality Report 2026 | View Report |
| Pleasant Prairie Wi Water Quality Report 2026 | View Report |
| Plover Wi Water Quality Report 2026 | View Report |
| Port Edwards Wi Water Quality Report 2026 | View Report |
| Port Wing Wi Water Quality Report 2026 | View Report |
| Prairie Du Sac Wi Water Quality Report 2026 | View Report |
| Prentice Wi Water Quality Report 2026 | View Report |
| Prescott Wi Water Quality Report 2026 | View Report |
| Radisson Wi Water Quality Report 2026 | View Report |
| Rewey Wi Water Quality Report 2026 | View Report |
| Rice Lake Wi Water Quality Report 2026 | View Report |
| Rockford Wi Water Quality Report 2026 | View Report |
| San Francisco Wi Water Quality Report 2026 | View Report |
| Sevierville Wi Water Quality Report 2026 | View Report |
| Shawano Wi Water Quality Report 2026 | View Report |
| Sheldon Wi Water Quality Report 2026 | View Report |
| Shell Lake Wi Water Quality Report 2026 | View Report |
| Slinger Wi Water Quality Report 2026 | View Report |
| Somerset Wi Water Quality Report 2026 | View Report |
| South Wayne Wi Water Quality Report 2026 | View Report |
| Sparta Wi Water Quality Report 2026 | View Report |
| St Nazianz Wi Water Quality Report 2026 | View Report |
| Stone Lake Wi Water Quality Report 2026 | View Report |
| Strum Wi Water Quality Report 2026 | View Report |
| Theresa Wi Water Quality Report 2026 | View Report |
| Waldo Wi Water Quality Report 2026 | View Report |
| Wales Wi Water Quality Report 2026 | View Report |
| Washburn Wi Water Quality Report 2026 | View Report |
| Webster Wi Water Quality Report 2026 | View Report |
| Westboro Wi Water Quality Report 2026 | View Report |
| Wheeler Wi Water Quality Report 2026 | View Report |
| Wild Rose Wi Water Quality Report 2026 | View Report |
| Woodville Wi Water Quality Report 2026 | View Report |
What Does This Mean For You?
Detecting Bacteria & Pathogens in your water supply does not necessarily mean immediate danger, but long-term exposure -- even at low levels -- carries measurable health risk. UV purification systems and sub-micron filters (0.2 micron) eliminate bacteria and pathogens.
Our recommendation: View Bacteria & Pathogens filters certified for Wisconsin water conditions or take our free Water Finder Quiz to get a personalized recommendation.
Filter Bacteria & Pathogens From Your Wisconsin Tap Water
PureWaterGuys carries NSF-certified filters proven to reduce Bacteria & Pathogens and other contaminants found in Wisconsin water.
Shop Bacteria & Pathogens Filters Take the Water QuizFrequently Asked Questions
What is Bacteria & Pathogens?
Bacteria including E. coli and coliforms indicate sewage contamination and can cause gastrointestinal illness.
Is Wisconsin tap water safe to drink?
Water quality varies by city. Of the Wisconsin systems we analyzed, 113 detected Bacteria & Pathogens. Most levels are below EPA action thresholds, but long-term low-level exposure carries health risk. Check your city's report above or use a certified home filter as a precaution.
What filter removes Bacteria & Pathogens from tap water?
UV purification systems and sub-micron filters (0.2 micron) eliminate bacteria and pathogens. See our Bacteria & Pathogens filter options.
Data sourced from EPA-mandated annual water quality reports (Consumer Confidence Reports). Last updated: 2026. Not all systems are required to test for every contaminant.