All water systems in Montana
2,352 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Westana Mobile Manor Hamilton Hamilton · Ravalli County |
90 | 0 | 0 | |
|
Elkhorn Health and Rehabilitation LLC Clancy · Jefferson County |
89 | 3 | 0 | |
|
Heart of Glacier Campground & Cabins County |
89 | 2 | 0 | |
|
Hillcrest Colony Power · Cascade County |
89 | 0 | 0 | |
|
Paradise Cove Polson · Lake County |
89 | 0 | 0 | |
|
7th Day Adventist Christian School Hamilton · Ravalli County |
88 | 2 | 0 | |
|
Bitterroot TP Havre Unapproved Havre · Hill County |
88 | 0 | 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 | |
|
Lithia Ford of Missoula Missoula · Missoula County |
87 | 1 | 1 | |
|
Mission Dam Water System County |
87 | 2 | 0 | |
|
Park Evergreen Trailer Court Helena · Lewis and Clark County |
87 | 2 | 0 | |
|
Springdale Hutterite Colony White Sulphur Springs · Meagher County |
87 | 3 | 0 | |
|
Augusta School Dist 45 Augusta · Lewis and Clark County |
86 | 1 | 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 | |
|
Kinsey School District 63 Kinsey · Custer County |
86 | 0 | 0 | |
|
Koocanusa Resort and Marina LLC Libby · Lincoln County |
86 | 1 | 0 | |
|
Antigone Acres HOA Hamilton · Ravalli County |
85 | 0 | 0 | |
|
Applegate Village Helena · Lewis and Clark County |
85 | 0 | 0 | |
|
Chewing Black Bones Campground County |
85 | 2 | 0 | |
|
Christ Church of Great Falls Great Falls · Cascade County |
85 | 1 | 1 | |
|
Cottonwood Camp Fort Smith Fort Smith · Big Horn County |
85 | 3 | 1 | |
|
Deep Well Ranch Work Camp West Yellowstone · Gallatin County |
85 | 1 | 0 | |
|
Fallon County Water District Baker · Fallon County |
85 | 1 | 1 | |
|
Green Acres Court Kalispell · Flathead County |
85 | 0 | 0 | |
|
Kettlehouse Brewing and Amphitheater Bonner · Missoula County |
85 | 0 | 0 | |
|
Lds Church Eureka Eureka · Lincoln County |
85 | 1 | 0 | |
|
Marketing Concepts INC Glendive · Dawson County |
85 | 1 | 0 | |
|
Milltown Water Users Asso South Milltown · Missoula County |
85 | 0 | 0 | |
|
Missouri Meadows Community INC Great Falls · Cascade County |
85 | 1 | 0 | |
|
Morning Star Kalispell · Flathead County |
85 | 0 | 0 | |
|
Pleasant View Homesites W and S District Kalispell · Flathead County |
85 | 2 | 0 | |
|
Ranch Headquarters Corwin Springs · Park County |
85 | 0 | 0 | |
|
Richland CO Valley View Wua Sidney · Richland County |
85 | 3 | 1 | |
|
S&k Housing Authority County |
85 | 2 | 0 | |
|
Schley Water System County |
85 | 2 | 0 | |
|
Stillwater Water District Kalispell · Flathead County |
85 | 2 | 1 | |
|
Sunrise Terrace NO 1 HOA Kalispell · Flathead County |
85 | 1 | 0 | |
|
Yellowstone Holiday Wtr and Sew District West Yellowstone · Gallatin County |
85 | 0 | 0 | |
|
E Bar L Ranch Greenough · Missoula County |
84 | 2 | 0 | |
|
Elk Creek Colony Augusta · Lewis and Clark County |
84 | 2 | 0 | |
|
Flathead River RV Resort Polson · Lake County |
84 | 0 | 0 | |
|
Heron Community Water System Heron · Sanders County |
84 | 1 | 0 | |
|
Lake Como Recreation Area Darby · Ravalli County |
84 | 0 | 0 | |
|
Miller Colony Choteau · Teton County |
84 | 0 | 0 | |
|
Moose Creek Resort West Glacier · Flathead County |
84 | 1 | 0 | |
|
Moose Crossing INC Kalispell · Flathead County |
84 | 2 | 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.