Revised Total Coliform Rule (RTCR) violations in Montana
620 active public water systems in Montana had a Revised Total Coliform Rule (RTCR) violation in the past three years, 204 of them in the latest quarter of EPA's data. What Revised Total Coliform Rule (RTCR) is and why it matters.
Health effects: Total coliform bacteria indicate that the disinfection barrier has been breached or fecal contamination is entering the system. E. coli specifically indicates fecal contamination and the possible presence of disease-causing pathogens (norovirus, Salmonella, Shigella, Campylobacter). Illness can be severe in elderly, young children, and immunocompromised individuals.
Systems with a Revised Total Coliform Rule (RTCR) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Neihart Town of Neihart · Cascade County |
229 | 2 | 1 | |
|
Anderson School Bozeman · Gallatin County |
220 | 7 | 1 | |
|
Wade Lake Hilltop Cliff Point CG Ennis · Madison County |
220 | 1 | 0 | |
|
Casitas del Rio Glendive · Dawson County |
216 | 4 | 0 | |
|
7 Point Ranch Emigrant · Park County |
210 | 1 | 0 | |
|
Glacier Point HO and Wua Helena · Lewis and Clark County |
210 | 2 | 0 | |
|
Subway Sandwich Shop Hamilton Hamilton · Ravalli County |
210 | 1 | 0 | |
|
Lazy I Public House, LLC Dba Lazy I Beer Wolf Creek · Lewis and Clark County |
205 | 2 | 1 | |
|
Flathead Lutheran Bible Camp Kalispell · Flathead County |
204 | 1 | 0 | |
|
Norris Hot Springs Norris · Madison County |
204 | 2 | 0 | |
|
Fort Rockvale Restaurant Fromberg · Carbon County |
202 | 2 | 0 | |
|
Big Valley Water INC Glasgow · Valley County |
200 | 2 | 1 | |
|
Eagle Rock Golf Course Billings · Yellowstone County |
200 | 1 | 0 | |
|
Glendive Alliance Church Glendive · Dawson County |
200 | 3 | 0 | |
|
Lds Church Sun River Great Falls · Cascade County |
200 | 1 | 0 | |
|
Lincoln Pit Stop Lincoln · Lewis and Clark County |
200 | 1 | 0 | |
|
National Water Service Fresh Pure Water Helena · Lewis and Clark County |
200 | 1 | 0 | |
|
National Water Service Fresh Pure Water Bozeman · Gallatin County |
200 | 1 | 0 | |
|
Rocky Mountain Supply Townsend Townsend · Broadwater County |
200 | 3 | 0 | |
|
Target Range Trailer Court LLC Missoula · Missoula County |
200 | 1 | 0 | |
|
Yellowstone Drag Strip Acton · Yellowstone County |
200 | 1 | 0 | |
|
Pine Hills Youth Correct Facil Miles City · Custer County |
193 | 1 | 0 | |
|
Moore Town of Moore · Fergus County |
186 | 2 | 1 | |
|
Cherry Creek Wua Glasgow Glasgow · Valley County |
180 | 5 | 0 | |
|
Richey Town of Richey · Dawson County |
180 | 1 | 0 | |
|
Simms High School Simms · Cascade County |
180 | 3 | 0 | |
|
Ivanhoe Water INC Polson · Lake County |
178 | 2 | 0 | |
|
Big Sky SD Ophir Elementary School Gallatin Gateway · Gallatin County |
175 | 3 | 0 | |
|
Hellgate Campground Helena · Lewis and Clark County |
175 | 3 | 1 | |
|
Hoving Business Center Helena · Lewis and Clark County |
170 | 5 | 1 | |
|
Dickey Lake Bible Camp Trego Trego · Lincoln County |
163 | 1 | 0 | |
|
Prairie Mobile Village Helena · Lewis and Clark County |
163 | 3 | 0 | |
|
Yellowstones Edge RV Park Livingston · Park County |
162 | 1 | 0 | |
|
Eagle Mount Bozeman · Gallatin County |
161 | 2 | 0 | |
|
Emkayan Village CO Water and Sewer Dist Libby · Lincoln County |
160 | 1 | 0 | |
|
Family Dollar Helena 13446 Unapproved Helena · Lewis and Clark County |
160 | 2 | 0 | |
|
Potomac School Dist 11 Bonner · Missoula County |
160 | 1 | 0 | |
|
Wingate by Wyndham Butte · Silver Bow County |
160 | 3 | 0 | |
|
Anaconda Country Club Anaconda · Deer Lodge County |
150 | 2 | 0 | |
|
Camp on the Boulder Mcleod · Sweet Grass County |
150 | 1 | 0 | |
|
Court Sheriff Campground Helena · Lewis and Clark County |
150 | 2 | 0 | |
|
Greycliff Mill Greycliff · Sweet Grass County |
150 | 2 | 0 | |
|
Lambert Sewer and Water Assn Lambert · Richland County |
150 | 4 | 0 | |
|
Potomac Greenough Community Center Potomac · Missoula County |
150 | 1 | 0 | |
|
Red Lodge Mtn Midway Lodge Red Lodge · Carbon County |
150 | 1 | 0 | |
|
Mission Valley Amish Church County |
147 | 2 | 0 | |
|
Stonefield Business Park Water System Belgrade · Gallatin County |
146 | 2 | 0 | |
|
Spruce Park MH and RV Park Kalispell · Flathead County |
144 | 1 | 0 | |
|
Super 8 Motel of Belgrade Belgrade · Gallatin County |
142 | 1 | 0 | |
|
Rocky Cliff Estates Kalispell · Flathead County |
140 | 1 | 0 |
About this data
A system is counted once if any of its violations in the past three years involved Revised Total Coliform Rule (RTCR), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Revised Total Coliform Rule (RTCR) 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.