June 17, 2026
Bacteria & Pathogens in Illinois Drinking Water 2026
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Bacteria & Pathogens in Illinois Drinking Water 2026
Bacteria & Pathogens contamination has been detected in drinking water systems across Illinois. Bacteria including E. coli and coliforms indicate sewage contamination and can cause gastrointestinal illness. Our analysis of Illinois water quality reports found Bacteria & Pathogens present in 95 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 Illinois with Bacteria & Pathogens Detected
The following 95 water systems in Illinois reported Bacteria & Pathogens in their annual water quality reports. Click any city to read the full report.
| City / Water System | Water Quality Report |
|---|---|
| Adair Il Water Quality Report 2026 | View Report |
| Altona Il Water Quality Report 2026 | View Report |
| Atwood Il Water Quality Report 2026 | View Report |
| Auburn Il Water Quality Report 2026 | View Report |
| Bellwood Il Water Quality Report 2026 | View Report |
| Berwyn Il Water Quality Report 2026 | View Report |
| Bettendorf Il Water Quality Report 2026 | View Report |
| Braidwood Il Water Quality Report 2026 | View Report |
| Brocton Il Water Quality Report 2026 | View Report |
| Burnham Il Water Quality Report 2026 | View Report |
| Calumet City Il Water Quality Report 2026 | View Report |
| Camp Grove Il Water Quality Report 2026 | View Report |
| Chadwick Il Water Quality Report 2026 | View Report |
| Chesterfield Il Water Quality Report 2026 | View Report |
| Chrisman Il Water Quality Report 2026 | View Report |
| Clinton Il Water Quality Report 2026 | View Report |
| Cowden Il Water Quality Report 2026 | View Report |
| Crete Il Water Quality Report 2026 | View Report |
| Creve Coeur Il Water Quality Report 2026 | View Report |
| Danvers Il Water Quality Report 2026 | View Report |
| Deer Creek Il Water Quality Report 2026 | View Report |
| Deerfield Il Water Quality Report 2026 | View Report |
| Dunlap Il Water Quality Report 2026 | View Report |
| Elliott Il Water Quality Report 2026 | View Report |
| Evansville Il Water Quality Report 2026 | View Report |
| Flanagan Il Water Quality Report 2026 | View Report |
| Flossmoor Il Water Quality Report 2026 | View Report |
| Gladstone Il Water Quality Report 2026 | View Report |
| Golconda Il Water Quality Report 2026 | View Report |
| Gurnee Il Water Quality Report 2026 | View Report |
| Hollowayville Il Water Quality Report 2026 | View Report |
| Hoopeston Il Water Quality Report 2026 | View Report |
| Huntley Il Water Quality Report 2026 | View Report |
| Itasca Il Water Quality Report 2026 | View Report |
| Iuka Il Water Quality Report 2026 | View Report |
| Jacksonville Il Water Quality Report 2026 | View Report |
| Ladd Il Water Quality Report 2026 | View Report |
| Lagrange Park Il Water Quality Report 2026 | View Report |
| Lake In The Hills Il Water Quality Report 2026 | View Report |
| Latham Il Water Quality Report 2026 | View Report |
| Leroy Il Water Quality Report 2026 | View Report |
| Lewistown Il Water Quality Report 2026 | View Report |
| Lisle Il Water Quality Report 2026 | View Report |
| Littleton Il Water Quality Report 2026 | View Report |
| Lockport Il Water Quality Report 2026 | View Report |
| Longview Il Water Quality Report 2026 | View Report |
| Louisville Il Water Quality Report 2026 | View Report |
| Malden Il Water Quality Report 2026 | View Report |
| Mansfield Il Water Quality Report 2026 | View Report |
| Markham Il Water Quality Report 2026 | View Report |
| Martinsville Il Water Quality Report 2026 | View Report |
| Melrose Park Il Water Quality Report 2026 | View Report |
| Minier Il Water Quality Report 2026 | View Report |
| Minooka Il Water Quality Report 2026 | View Report |
| Mokena Il Water Quality Report 2026 | View Report |
| Morton Il Water Quality Report 2026 | View Report |
| Mount Erie Il Water Quality Report 2026 | View Report |
| Mount Zion Il Water Quality Report 2026 | View Report |
| Mt Carmel Il Water Quality Report 2026 | View Report |
| Mundelin Il Water Quality Report 2026 | View Report |
| Neoga Il Water Quality Report 2026 | View Report |
| Neponset Il Water Quality Report 2026 | View Report |
| New Berlin Il Water Quality Report 2026 | View Report |
| New Windsor Il Water Quality Report 2026 | View Report |
| Niles Il Water Quality Report 2026 | View Report |
| North Chicago Il Water Quality Report 2026 | View Report |
| Ogden Il Water Quality Report 2026 | View Report |
| Omaha Il Water Quality Report 2026 | View Report |
| Ottawa Il Water Quality Report 2026 | View Report |
| Palestine Il Water Quality Report 2026 | View Report |
| Palmyra Il Water Quality Report 2026 | View Report |
| Park Forest Il Water Quality Report 2026 | View Report |
| Payson Il Water Quality Report 2026 | View Report |
| Petersburg Il Water Quality Report 2026 | View Report |
| Pingree Grove Il Water Quality Report 2026 | View Report |
| Piper City Il Water Quality Report 2026 | View Report |
| Posen Il Water Quality Report 2026 | View Report |
| Prospect Heights Il Water Quality Report 2026 | View Report |
| Ramsey Il Water Quality Report 2026 | View Report |
| Ridgway Il Water Quality Report 2026 | View Report |
| Robbins Il Water Quality Report 2026 | View Report |
| Roseville Il Water Quality Report 2026 | View Report |
| Round Lake Beach Il Water Quality Report 2026 | View Report |
| Schiller Park Il Water Quality Report 2026 | View Report |
| Sibley Il Water Quality Report 2026 | View Report |
| Silvis Il Water Quality Report 2026 | View Report |
| South Wilmington Il Water Quality Report 2026 | View Report |
| Steeleville Il Water Quality Report 2026 | View Report |
| Steward Il Water Quality Report 2026 | View Report |
| Warrensburg Il Water Quality Report 2026 | View Report |
| Watseka Il Water Quality Report 2026 | View Report |
| Westmont Il Water Quality Report 2026 | View Report |
| Westville Il Water Quality Report 2026 | View Report |
| Wheeling Il Water Quality Report 2026 | View Report |
| Willow Hill Il 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 Illinois water conditions or take our free Water Finder Quiz to get a personalized recommendation.
Filter Bacteria & Pathogens From Your Illinois Tap Water
PureWaterGuys carries NSF-certified filters proven to reduce Bacteria & Pathogens and other contaminants found in Illinois 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 Illinois tap water safe to drink?
Water quality varies by city. Of the Illinois systems we analyzed, 95 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.