All water systems in Montana
2,352 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Silver Gate Water Association INC Silver Gate · Park County |
40 | 1 | 0 | |
|
Soda Butte Campground Cooke City · Park County |
40 | 2 | 0 | |
|
Southside RV Park Well NO 1 Dillon · Beaverhead County |
40 | 0 | 0 | |
|
Southside RV Park Well NO 2 Dillon · Beaverhead County |
40 | 0 | 0 | |
|
Spanish Peaks Mountain Club Big Sky · Gallatin County |
40 | 0 | 0 | |
|
Spruce Meadows HOA Missoula · Flathead County |
40 | 0 | 0 | |
|
Thibodeau Campground Missoula · Missoula County |
40 | 0 | 0 | |
|
Timbers at Whitefish the Kalispell · Flathead County |
40 | 0 | 0 | |
|
Wisdom Ranger Station Office Wisdom · Beaverhead County |
40 | 2 | 0 | |
|
Liberty Lake Properties LLC Missoula · Missoula County |
39 | 1 | 0 | |
|
River Edge Resort 1 Alberton · Mineral County |
39 | 0 | 0 | |
|
Rocking J Ranch Employee Housing Philipsburg · Granite County |
39 | 1 | 0 | |
|
Elk Lake Resort West Yellowstone · Beaverhead County |
38 | 0 | 0 | |
|
Hunters Trailer CT Anaconda Anaconda · Deer Lodge County |
38 | 3 | 2 | |
|
Lakeview Suites Hebgen Lake · Gallatin County |
38 | 2 | 2 | |
|
McGregor Lake Highlands Whitefish · Flathead County |
38 | 0 | 0 | |
|
Missoula County Public Water Dept Missoula · Missoula County |
38 | 0 | 0 | |
|
North Star Ranch Unapproved Whitefish · Flathead County |
38 | 0 | 0 | |
|
Sula Ranger Station Sula · Ravalli County |
38 | 0 | 0 | |
|
Whitefish River Ranch Kalispell · Flathead County |
38 | 0 | 0 | |
|
2 Bar Lazy H Campground Butte · Silver Bow County |
37 | 2 | 0 | |
|
Bagnell Dental Clinic Frenchtown · Missoula County |
37 | 0 | 0 | |
|
Branco Court Lolo · Missoula County |
37 | 0 | 0 | |
|
Countryside Court Missoula Missoula · Missoula County |
37 | 0 | 0 | |
|
Grizzly Disposal & Recycling Missoula · Missoula County |
37 | 0 | 0 | |
|
Lasalle RV Park Columbia Falls · Flathead County |
37 | 1 | 0 | |
|
Lone View Ridge Water System Big Sky · Madison County |
37 | 0 | 0 | |
|
Raymond Border Station Raymond · Sheridan County |
37 | 1 | 0 | |
|
Seven Acres Ronan · Lake County |
37 | 2 | 0 | |
|
Sportsman Lodge and RV Park Melrose · Silver Bow County |
37 | 2 | 0 | |
|
The Brooks Corvallis · Ravalli County |
37 | 0 | 0 | |
|
Apple Barrel Kalispell · Flathead County |
36 | 1 | 0 | |
|
B and W Association Essex · Flathead County |
36 | 1 | 0 | |
|
Canyon Ranches Subdivision Red Lodge · Carbon County |
36 | 0 | 0 | |
|
Coyote Coffee House Lincoln · Lewis and Clark County |
36 | 0 | 0 | |
|
East Wood Village Trailer Park Columbia Falls · Flathead County |
36 | 0 | 0 | |
|
Foys Lakeside Estates Water & Sewer Dist Kalispell · Flathead County |
36 | 0 | 0 | |
|
Kings Arena Great Falls · Cascade County |
36 | 1 | 0 | |
|
Messiah Lutheran Church Missoula · Missoula County |
36 | 0 | 0 | |
|
Mid Valley Center Stevensville · Ravalli County |
36 | 2 | 1 | |
|
Mountain View Timbers HOA Kalispell · Flathead County |
36 | 0 | 0 | |
|
Phoenix Park East Helena · Lewis and Clark County |
36 | 2 | 0 | |
|
Renae Court Subdivision Missoula · Missoula County |
36 | 1 | 1 | |
|
Swan Valley Elementary School Dist 33 Condon · Missoula County |
36 | 0 | 0 | |
|
Woodman School District 18 Lolo · Missoula County |
36 | 0 | 0 | |
|
2727 West Central Duplexes Missoula · Missoula County |
35 | 0 | 0 | |
|
Augusta Senior Citizens Center Augusta · Lewis and Clark County |
35 | 0 | 0 | |
|
Bahny Brae Subdivision East Helena · Lewis and Clark County |
35 | 3 | 0 | |
|
Big Sky Mobile Manor Columbia Falls · Flathead County |
35 | 3 | 0 | |
|
Bish's RV Kalispell · Flathead County |
35 | 1 | 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.