E. coli (Escherichia coli) violations in Montana
75 active public water systems in Montana had a E. coli (Escherichia coli) violation in the past three years, 75 of them in the latest quarter of EPA's data. What E. coli (Escherichia coli) is and why it matters.
Systems with a E. coli (Escherichia coli) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Double Arrow Pro Shop Seeley Lake · Missoula County |
53 | 2 | 0 | |
|
EL Western Resort Ennis · Madison County |
52 | 2 | 0 | |
|
Basin Campground Red Lodge · Carbon County |
50 | 1 | 1 | |
|
Glass Slipper Lounge and Grocery Helena · Lewis and Clark County |
50 | 2 | 0 | |
|
Hawarden Square Butte Water Fort Benton · Chouteau County |
50 | 2 | 1 | |
|
Pine Creek Lodge Livingston · Park County |
50 | 3 | 0 | |
|
West Park Cenex Glendive Glendive · Dawson County |
50 | 2 | 0 | |
|
Riverstone Family Lodge Eureka · Lincoln County |
48 | 2 | 1 | |
|
Living Hope Fellowship Helena · Lewis and Clark County |
46 | 2 | 2 | |
|
Turner Border Station Turner · Blaine County |
45 | 2 | 0 | |
|
Hunters Trailer CT Anaconda Anaconda · Deer Lodge County |
38 | 3 | 2 | |
|
Lakeview Suites Hebgen Lake · Gallatin County |
38 | 2 | 2 | |
|
Libby Dam RV Park Libby · Lincoln County |
34 | 1 | 0 | |
|
Diamond S RV Park Ronan Ronan · Lake County |
33 | 2 | 1 | |
|
Twin Lakes Campground Wisdom · Beaverhead County |
30 | 2 | 2 | |
|
Westfork Lodge Darby · Ravalli County |
30 | 2 | 1 | |
|
The Hideaway Hilger · Fergus County |
26 | 3 | 2 | |
|
Cameahwait Campground East Dillon · Beaverhead County |
25 | 1 | 1 | |
|
Crossroads Conoco Glendive · Dawson County |
25 | 2 | 0 | |
|
Fishermans Village Subdivision West Yellowstone · Gallatin County |
25 | 9 | 1 | |
|
Kirby Saloon Busby · Big Horn County |
25 | 3 | 1 | |
|
Stillwater Getaway Whitefish · Flathead County |
25 | 3 | 2 | |
|
The Fort at 49 LLC Custer · Yellowstone County |
25 | 3 | 1 | |
|
Waterhole Saloon Reedpoint Reed Point · Stillwater County |
25 | 3 | 1 | |
|
Riceville Heights Subdivision Belt · Cascade County |
25 | 5 | 2 |
About this data
A system is counted once if any of its violations in the past three years involved E. coli (Escherichia coli), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not E. coli (Escherichia coli) alone.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Montana records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet.