All water systems in Montana
1,183 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Rollins Restaurant RV Park Rollins · Lake County |
97 | 2 | 1 | |
|
Terra Nova Cabins West Yellowstone · Gallatin County |
96 | 0 | 0 | |
|
Anglers Roost Hamilton · Ravalli County |
94 | 1 | 0 | |
|
Buckhorn Bar Augusta Augusta · Lewis and Clark County |
94 | 1 | 0 | |
|
Lahood Park Cardwell Cardwell · Jefferson County |
94 | 2 | 0 | |
|
Piney Campground Philipsburg · Granite County |
94 | 0 | 0 | |
|
ST Regis Camp Motel and Frosty St Regis · Mineral County |
94 | 0 | 0 | |
|
Crossroads Christian Fellowship Victor · Ravalli County |
93 | 0 | 0 | |
|
Livingston Campground Livingston · Park County |
93 | 1 | 0 | |
|
Potomac Bar Bonner · Missoula County |
93 | 3 | 0 | |
|
Bearmouth RV Park Clinton · Granite County |
92 | 0 | 0 | |
|
Blue Mountains RV Park Eureka · Lincoln County |
92 | 1 | 1 | |
|
Indiana Univ Geologic Station Cardwell · Madison County |
92 | 0 | 0 | |
|
Mountain View RV Park Columbia Falls · Flathead County |
92 | 0 | 0 | |
|
Rustic Hut Florence · Ravalli County |
92 | 0 | 0 | |
|
ST John the Baptist Church Missoula · Missoula County |
91 | 2 | 0 | |
|
Big Sky Grocery Unapproved Moore · Fergus County |
90 | 1 | 0 | |
|
Birch Creek Outdoor ED Center Dillon · Beaverhead County |
90 | 2 | 0 | |
|
Furniture Row Billings Billings · Yellowstone County |
90 | 0 | 0 | |
|
Indian Springs RV Eureka · Lincoln County |
90 | 0 | 0 | |
|
Lewis and Clark Campground Dillon · Beaverhead County |
90 | 1 | 0 | |
|
Montana Coffee Trader INC Whitefish · Flathead County |
90 | 0 | 0 | |
|
West Fork Cabin Camp Cameron · Madison County |
90 | 0 | 0 | |
|
Heart of Glacier Campground & Cabins County |
89 | 2 | 0 | |
|
Paradise Cove Polson · Lake County |
89 | 0 | 0 | |
|
7th Day Adventist Christian School Hamilton · Ravalli County |
88 | 2 | 0 | |
|
Lodge at Lolo Hot Springs Lolo · Missoula County |
88 | 1 | 0 | |
|
Marysville House Marysville · Lewis and Clark County |
88 | 1 | 0 | |
|
Hoyt and Scout LLC Toston · Broadwater County |
87 | 2 | 1 | |
|
Flathead Lake United Methodist Camp Rollins · Lake County |
86 | 1 | 0 | |
|
Glacier Guides INC West Glacier · Flathead County |
86 | 0 | 0 | |
|
Halfway House Troy · Lincoln County |
86 | 2 | 0 | |
|
Koocanusa Resort and Marina LLC Libby · Lincoln County |
86 | 1 | 0 | |
|
Chewing Black Bones Campground County |
85 | 2 | 0 | |
|
Cottonwood Camp Fort Smith Fort Smith · Big Horn County |
85 | 3 | 1 | |
|
Deep Well Ranch Work Camp West Yellowstone · Gallatin County |
85 | 1 | 0 | |
|
Lds Church Eureka Eureka · Lincoln County |
85 | 1 | 0 | |
|
E Bar L Ranch Greenough · Missoula County |
84 | 2 | 0 | |
|
Flathead River RV Resort Polson · Lake County |
84 | 0 | 0 | |
|
Lake Como Recreation Area Darby · Ravalli County |
84 | 0 | 0 | |
|
Moose Creek Resort West Glacier · Flathead County |
84 | 1 | 0 | |
|
Moose Crossing INC Kalispell · Flathead County |
84 | 2 | 0 | |
|
Bair Family Museum Martinsdale · Meagher County |
83 | 1 | 0 | |
|
DT Ventures Gallatin Gateway · Gallatin County |
83 | 1 | 0 | |
|
Jays Food Store Missoula · Missoula County |
83 | 0 | 0 | |
|
Valley Hub Helena · Lewis and Clark County |
83 | 0 | 0 | |
|
Bakers Hole CG Bozeman · Gallatin County |
82 | 0 | 0 | |
|
Bannack State Park Upper CG Dillon · Beaverhead County |
82 | 0 | 0 | |
|
Lincoln Log Hotel Lincoln · Lewis and Clark County |
82 | 2 | 0 | |
|
McGregor Lakes RV LLC Marion · Flathead County |
82 | 0 | 0 |
About this data
Rules violated counts the rules a system was in violation of in the past three years, including monitoring and reporting lapses; one rule can carry several violations. Unresolved is the number of those rules currently in violation at EPA's latest data refresh.
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.