All water systems in Montana
2,352 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Big Stone Colony INC Sand Coulee · Cascade County |
130 | 2 | 0 | |
|
Billings Christian Schools Billings · Yellowstone County |
130 | 0 | 0 | |
|
Bitterroot Gateway MB PK Lolo Lolo · Missoula County |
130 | 6 | 0 | |
|
Convergence Ministries Missoula · Missoula County |
130 | 0 | 0 | |
|
First Student INC Billings · Yellowstone County |
130 | 1 | 0 | |
|
Forest Inn Lounge and Apartments Missoula · Missoula County |
130 | 0 | 0 | |
|
Fort Kipp Subdivision Water System County |
130 | 2 | 1 | |
|
Meadow Hills Water and Sewer District Kalispell · Flathead County |
130 | 0 | 0 | |
|
New Miami Colony Conrad · Pondera County |
130 | 1 | 0 | |
|
North Forty Resort Whitefish · Flathead County |
130 | 1 | 1 | |
|
Outback Montana RV Park Bigfork - Lake Co · Lake County |
130 | 1 | 0 | |
|
Pine Meadows Golf Course Elks 456 the Lewistown · Fergus County |
130 | 2 | 0 | |
|
Plevna Town of Plevna · Fallon County |
130 | 2 | 0 | |
|
Riverview Colony Chester · Liberty County |
130 | 1 | 0 | |
|
Rocking J Ranch Philipsburg · Granite County |
130 | 1 | 0 | |
|
Sage Creek Colony Chester · Liberty County |
130 | 2 | 0 | |
|
Stillwater Estates County W and S Dist Kalispell · Flathead County |
130 | 0 | 0 | |
|
West Valley Pines HOA INC Kalispell · Flathead County |
130 | 1 | 0 | |
|
Beaver Creek Golf Course Havre · Hill County |
128 | 2 | 0 | |
|
Bonner Housing PWS System Bonner · Missoula County |
128 | 0 | 0 | |
|
Hildreth Subdivision NO 3 Dillon · Beaverhead County |
128 | 2 | 1 | |
|
Logan Montana State Park Libby · Lincoln County |
128 | 1 | 0 | |
|
Two Mile Tract HOA Kalispell · Flathead County |
128 | 0 | 0 | |
|
Eureka Ranger Station Eureka · Lincoln County |
127 | 1 | 0 | |
|
Judith Gap Town of Judith Gap · Wheatland County |
126 | 0 | 0 | |
|
Abundant Life Church Bozeman · Gallatin County |
125 | 2 | 0 | |
|
Alpine Village Wua Whitefish · Flathead County |
125 | 1 | 0 | |
|
Bar N Restaurant West Yellowstone · Gallatin County |
125 | 1 | 0 | |
|
Billings Christian High School Billings · Yellowstone County |
125 | 2 | 0 | |
|
Bruckner Truck and Equipment Missoula · Missoula County |
125 | 2 | 0 | |
|
Corvallis Subway Corvallis · Ravalli County |
125 | 0 | 0 | |
|
Country Estates Mble Home Park Columbia Falls · Flathead County |
125 | 1 | 0 | |
|
Culligan Bottled Water Kalispell Kalispell · Flathead County |
125 | 1 | 0 | |
|
Eagle Creek Colony Chester · Liberty County |
125 | 0 | 0 | |
|
Geyser Judith Basin Cty Water Sewer Dist Geyser · Judith Basin County |
125 | 0 | 0 | |
|
Golden Eagle Water Users Assn Billings · Yellowstone County |
125 | 1 | 0 | |
|
Hobson Town of Hobson · Judith Basin County |
125 | 2 | 0 | |
|
Lds Church Lolo Missoula · Missoula County |
125 | 0 | 0 | |
|
Pebble Gardens Mobile Home CT Helena · Lewis and Clark County |
125 | 0 | 0 | |
|
Pleasant Park Community INC Great Falls · Cascade County |
125 | 3 | 0 | |
|
Ranch at Dome Mountain Lodge Emigrant · Park County |
125 | 0 | 0 | |
|
Town Pump Butte Comfort Inn Butte · Silver Bow County |
125 | 0 | 0 | |
|
West Mountain Estates Alberton · Mineral County |
125 | 0 | 0 | |
|
Whitewater Inn Gallatin Gateway · Gallatin County |
125 | 2 | 0 | |
|
Whitewater School Dist 20aa D Whitewater · Phillips County |
125 | 1 | 1 | |
|
Windmill Trailer Park Well 2 Livingston · Park County |
125 | 0 | 0 | |
|
Yellowtail Dam GC System Hardin · Big Horn County |
125 | 2 | 0 | |
|
Arlee County |
124 | 2 | 0 | |
|
Rimrock Colony Sunburst · Toole County |
124 | 1 | 0 | |
|
Square Dance Center and Campground Lolo · Missoula County |
124 | 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.