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.
Systems with a Revised Total Coliform Rule (RTCR) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Swlo and Main Office Missoula · Missoula County |
75 | 7 | 0 | |
|
Fedex Relay Center Billings · Yellowstone County |
74 | 2 | 0 | |
|
Theiltges Saint Thomas Camp Great Falls · Cascade County |
74 | 1 | 0 | |
|
Bison Inn Cafe Ravalli · Lake County |
73 | 1 | 0 | |
|
Western Livestock Auction LLC Great Falls · Cascade County |
71 | 1 | 0 | |
|
All West Business Park Lot 3 Bozeman · Gallatin County |
70 | 4 | 0 | |
|
Duck Creek Mobile Home Park Billings · Yellowstone County |
70 | 5 | 0 | |
|
Hilltop Hitching Post Inn Marion · Flathead County |
70 | 1 | 0 | |
|
Pleasant Grove Manufactured Home Sites Lakeside · Flathead County |
70 | 1 | 0 | |
|
Willow Glen Trailer Court Kspl Kalispell · Flathead County |
69 | 1 | 0 | |
|
The Park Glasgow · Valley County |
68 | 3 | 0 | |
|
Milford Colony INC Wolf Creek · Lewis and Clark County |
67 | 7 | 0 | |
|
Carpenter Lake HOA Eureka · Lincoln County |
65 | 1 | 0 | |
|
Hillcrest Community Water Kalispell · Flathead County |
65 | 1 | 0 | |
|
Lazy B Bar and Cafe Augusta Augusta · Lewis and Clark County |
65 | 1 | 0 | |
|
Foxys Bar & RV Park Libby · Lincoln County |
63 | 1 | 0 | |
|
McAllister Lodging Mcallister · Madison County |
63 | 2 | 0 | |
|
Silver Tip Junction Sanders County |
62 | 3 | 1 | |
|
Two Rivers RV Park Noxon · Sanders County |
62 | 1 | 0 | |
|
Blue Grass Water Users Association Billings · Yellowstone County |
60 | 2 | 0 | |
|
Condon Work Center Condon · Missoula County |
60 | 1 | 0 | |
|
Halfmoon Mobile Home Park INC Columbia Falls · Flathead County |
60 | 1 | 0 | |
|
Kid Corral Day Care Shepherd · Yellowstone County |
60 | 2 | 0 | |
|
Sanders Water System Arlee · Lake County |
60 | 3 | 0 | |
|
Twin Acres Trailer Court Kalispell · Flathead County |
60 | 1 | 0 | |
|
Water Resources Division Missoula · Missoula County |
60 | 8 | 1 | |
|
Antelope County Water and Sewer Antelope · Sheridan County |
59 | 3 | 0 | |
|
Brush Lake State Park Dagmar · Sheridan County |
58 | 1 | 0 | |
|
Blackfoot Water System County |
56 | 3 | 0 | |
|
King Ranch Colony Lewistown · Fergus County |
56 | 4 | 2 | |
|
Boulder Hot Springs Boulder · Jefferson County |
55 | 1 | 0 | |
|
Light of the Valley Church Stevensville · Ravalli County |
55 | 2 | 0 | |
|
Wye Properties, LLC Missoula · Missoula County |
55 | 3 | 1 | |
|
Antler Saloon Wisdom · Beaverhead County |
54 | 2 | 0 | |
|
Pine Crest TR PK Livingston · Park County |
54 | 2 | 0 | |
|
River Bend Libby · Lincoln County |
54 | 1 | 0 | |
|
Silver Bullet Bar Columbia Falls · Flathead County |
54 | 1 | 0 | |
|
Double Arrow Pro Shop Seeley Lake · Missoula County |
53 | 2 | 0 | |
|
Kolar Tire Joslyn Helena Unapproved Helena · Lewis and Clark County |
53 | 1 | 0 | |
|
Riverfront Motel Thompson Falls · Sanders County |
53 | 1 | 0 | |
|
Arena Investments LLC Eureka · Lincoln County |
52 | 2 | 0 | |
|
Boulder Ridge Bed and Breakfast Great Falls · Cascade County |
52 | 1 | 0 | |
|
EL Western Resort Ennis · Madison County |
52 | 2 | 0 | |
|
Grey Sandy Campground Helena · Lewis and Clark County |
52 | 1 | 0 | |
|
Red Dog Saloon and Pizza Libby · Lincoln County |
52 | 1 | 0 | |
|
Skalkaho Steakhouse Hamilton · Ravalli County |
52 | 1 | 0 | |
|
Yellowstone Valley Lodge Livingston · Park County |
52 | 1 | 0 | |
|
Osen RV Park and Campground Livingston · Park County |
51 | 1 | 0 | |
|
3 North Bar and Grill Acton · Yellowstone County |
50 | 1 | 0 | |
|
Augusta MT RV Park Augusta · Lewis and Clark County |
50 | 2 | 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.