June 17, 2026
Bacteria & Pathogens in Montana Drinking Water 2026
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Bacteria & Pathogens in Montana Drinking Water 2026
Bacteria & Pathogens contamination has been detected in drinking water systems across Montana. Bacteria including E. coli and coliforms indicate sewage contamination and can cause gastrointestinal illness. Our analysis of Montana water quality reports found Bacteria & Pathogens present in 58 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 Montana with Bacteria & Pathogens Detected
The following 58 water systems in Montana reported Bacteria & Pathogens in their annual water quality reports. Click any city to read the full report.
| City / Water System | Water Quality Report |
|---|---|
| Alberton Mt Water Quality Report 2026 | View Report |
| Alder Mt Water Quality Report 2026 | View Report |
| Ashland Mt Water Quality Report 2026 | View Report |
| Augusta Mt Water Quality Report 2026 | View Report |
| Baker Mt Water Quality Report 2026 | View Report |
| Belfry Mt Water Quality Report 2026 | View Report |
| Belgrade Mt Water Quality Report 2026 | View Report |
| Bend Mt Water Quality Report 2026 | View Report |
| Big Sky Mt Water Quality Report 2026 | View Report |
| Bigfork Mt Water Quality Report 2026 | View Report |
| Bismarck Mt Water Quality Report 2026 | View Report |
| Black Eagle Mt Water Quality Report 2026 | View Report |
| Brady Mt Water Quality Report 2026 | View Report |
| Brockton Mt Water Quality Report 2026 | View Report |
| Browning Mt Water Quality Report 2026 | View Report |
| Campbell Mt Water Quality Report 2026 | View Report |
| Carter Mt Water Quality Report 2026 | View Report |
| Coffee Creek Mt Water Quality Report 2026 | View Report |
| Condon Mt Water Quality Report 2026 | View Report |
| Coram Mt Water Quality Report 2026 | View Report |
| Corpus Christi Mt Water Quality Report 2026 | View Report |
| Deer Lodge Mt Water Quality Report 2026 | View Report |
| Dodson Mt Water Quality Report 2026 | View Report |
| Drummond Mt Water Quality Report 2026 | View Report |
| Dutton Mt Water Quality Report 2026 | View Report |
| Fortine Mt Water Quality Report 2026 | View Report |
| Fromberg Mt Water Quality Report 2026 | View Report |
| Gildford Mt Water Quality Report 2026 | View Report |
| Harlem Mt Water Quality Report 2026 | View Report |
| Hermosa Beach Mt Water Quality Report 2026 | View Report |
| Heron Mt Water Quality Report 2026 | View Report |
| Hinsdale Mt Water Quality Report 2026 | View Report |
| Kevin Mt Water Quality Report 2026 | View Report |
| Lakeside Mt Water Quality Report 2026 | View Report |
| Lewistown Mt Water Quality Report 2026 | View Report |
| Melville Mt Water Quality Report 2026 | View Report |
| Noxon Mt Water Quality Report 2026 | View Report |
| Opheim Mt Water Quality Report 2026 | View Report |
| Pablo Mt Water Quality Report 2026 | View Report |
| Rexford Mt Water Quality Report 2026 | View Report |
| Ryegate Mt Water Quality Report 2026 | View Report |
| San Diego Mt Water Quality Report 2026 | View Report |
| Sand Coulee Mt Water Quality Report 2026 | View Report |
| Shelby Mt Water Quality Report 2026 | View Report |
| St Ignatius Mt Water Quality Report 2026 | View Report |
| Stevensville Mt Water Quality Report 2026 | View Report |
| Stockett Mt Water Quality Report 2026 | View Report |
| Thoimpson Falls Mt Water Quality Report 2026 | View Report |
| Trout Creek Mt Water Quality Report 2026 | View Report |
| Turner Mt Water Quality Report 2026 | View Report |
| Ulm Mt Water Quality Report 2026 | View Report |
| Vancouver Mt Water Quality Report 2026 | View Report |
| Virginia City Mt Water Quality Report 2026 | View Report |
| West Yellowstone Mt Water Quality Report 2026 | View Report |
| Whitehall Mt Water Quality Report 2026 | View Report |
| Wibuax Mt Water Quality Report 2026 | View Report |
| Winifred Mt Water Quality Report 2026 | View Report |
| Zortman Mt 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 Montana water conditions or take our free Water Finder Quiz to get a personalized recommendation.
Filter Bacteria & Pathogens From Your Montana Tap Water
PureWaterGuys carries NSF-certified filters proven to reduce Bacteria & Pathogens and other contaminants found in Montana 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 Montana tap water safe to drink?
Water quality varies by city. Of the Montana systems we analyzed, 58 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.