All water systems in Montana
2,352 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Peks Mobile Home Court Billings · Yellowstone County |
95 | 3 | 0 | |
|
Stoneridge Home Owners Association Kalispell · Flathead County |
95 | 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 | |
|
Lavina School District Lavina · Golden Valley County |
94 | 0 | 0 | |
|
Piegan Border Station Babb · Glacier County |
94 | 3 | 0 | |
|
Piney Campground Philipsburg · Granite County |
94 | 0 | 0 | |
|
ST Regis Camp Motel and Frosty St Regis · Mineral County |
94 | 0 | 0 | |
|
Ulm School Dist 85 Ulm · Cascade County |
94 | 1 | 0 | |
|
AP Countryside Estates Kalispell · Flathead County |
93 | 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 | |
|
Vwa Services Bridger · Carbon County |
93 | 0 | 0 | |
|
Bearmouth RV Park Clinton · Granite County |
92 | 0 | 0 | |
|
Blue Mountains RV Park Eureka · Lincoln County |
92 | 1 | 1 | |
|
Hi-Line Colony Whitlash · Liberty County |
92 | 4 | 0 | |
|
Indiana Univ Geologic Station Cardwell · Madison County |
92 | 0 | 0 | |
|
Lakeview Park Estates Homeowners Assoc Lakeside · Flathead County |
92 | 0 | 0 | |
|
Midway Colony INC Conrad · Pondera County |
92 | 1 | 0 | |
|
Mountain View RV Park Columbia Falls · Flathead County |
92 | 0 | 0 | |
|
Rockport Colony Pendroy · Teton 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 | |
|
Buena Vista Community, INC Missoula · Missoula County |
90 | 0 | 0 | |
|
Buffalo Mountain Subdivision Whitefish · Flathead County |
90 | 1 | 0 | |
|
Clearview Heights Lake County Water Dist Polson · Lake County |
90 | 1 | 0 | |
|
Forest River Mobile Home and RV Park Kalispell · Flathead County |
90 | 0 | 0 | |
|
Furniture Row Billings Billings · Yellowstone County |
90 | 0 | 0 | |
|
Galen Facility Anaconda · Deer Lodge County |
90 | 3 | 0 | |
|
Greenfield Elem School Dist 75 Fairfield · Teton County |
90 | 5 | 0 | |
|
I 94 Mobile Home Park Glendive · Dawson County |
90 | 1 | 0 | |
|
Indian Springs RV Eureka · Lincoln County |
90 | 0 | 0 | |
|
Kenworth Sales CO Missoula · Missoula County |
90 | 0 | 0 | |
|
Lewis and Clark Campground Dillon · Beaverhead County |
90 | 1 | 0 | |
|
Masonic Home of Montana Helena · Lewis and Clark County |
90 | 1 | 0 | |
|
Montana Coffee Trader INC Whitefish · Flathead County |
90 | 0 | 0 | |
|
Ncmrwa North Havre Cwd Leg Havre · Hill County |
90 | 2 | 0 | |
|
Nine Mile CO Water and Sewer District Toole County |
90 | 1 | 0 | |
|
North Havre County Water Dist Havre · Hill County |
90 | 1 | 0 | |
|
Pleasant Hill Estates HOA Kalispell · Flathead County |
90 | 2 | 0 | |
|
Ranch CO Water & Sewer Dist the Bigfork - Lake Co · Flathead County |
90 | 1 | 0 | |
|
Rivershore Community LLC Great Falls · Cascade County |
90 | 0 | 0 | |
|
Solid Rock Ventures LLC Kalispell · Flathead County |
90 | 2 | 0 | |
|
Springhill Park Subdivision Bozeman · Gallatin County |
90 | 1 | 1 | |
|
West Fork Cabin Camp Cameron · Madison County |
90 | 0 | 0 | |
|
West Glacier Wua West Glacier · Flathead County |
90 | 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.