All water systems in Montana
2,352 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Saddleback Ridge Estates Billings · Yellowstone County |
150 | 0 | 0 | |
|
Shyrock Motorcoach Community Mineral County |
150 | 1 | 0 | |
|
Springvale Subdivision Belgrade · Gallatin County |
150 | 0 | 0 | |
|
Stock Farm the Hamilton · Ravalli County |
150 | 2 | 1 | |
|
Swan Lake Annex Campground Swan Lake · Lake County |
150 | 0 | 0 | |
|
Teton Pass Ski Area INC Choteau · Teton County |
150 | 2 | 0 | |
|
Town Pump Stevensville LL 1 Stevensville · Ravalli County |
150 | 0 | 0 | |
|
Trailhead Christian Fellowship Church Townsend · Broadwater County |
150 | 1 | 0 | |
|
Youth With a Mission Lakeside · Flathead County |
150 | 0 | 0 | |
|
Quail Ridge Kalispell · Flathead County |
148 | 0 | 0 | |
|
Mission Valley Amish Church County |
147 | 2 | 0 | |
|
Camp Bighorn Plains · Sanders County |
146 | 0 | 0 | |
|
River City Grill Missoula · Missoula County |
146 | 0 | 0 | |
|
Stonefield Business Park Water System Belgrade · Gallatin County |
146 | 2 | 0 | |
|
Arlee High School Dist NO 8 Arlee · Lake County |
145 | 1 | 0 | |
|
C & C Community INC Billings · Yellowstone County |
145 | 2 | 1 | |
|
Cabinet Ranger Station Trout Creek · Sanders County |
145 | 0 | 0 | |
|
Shelby Addition Water District Lolo · Missoula County |
145 | 1 | 1 | |
|
Brady County Water Sewer District Brady · Pondera County |
144 | 2 | 0 | |
|
Ncmrwa Pondera CO Service Area Conrad · Pondera County |
144 | 1 | 0 | |
|
Spruce Park MH and RV Park Kalispell · Flathead County |
144 | 1 | 0 | |
|
Bonner Churches Bonner · Missoula County |
142 | 0 | 0 | |
|
Mountain Vista Hotel West Yellowstone · Gallatin County |
142 | 1 | 0 | |
|
Stoney Brook Village Condominium Assoc Clancy · Jefferson County |
142 | 2 | 1 | |
|
Super 8 Motel of Belgrade Belgrade · Gallatin County |
142 | 1 | 0 | |
|
Bitterroot Health Stevensville Stevensville · Ravalli County |
140 | 1 | 0 | |
|
C and D HOA Missoula · Missoula County |
140 | 1 | 1 | |
|
Cabinet Mountain Bible Church Trout Creek · Sanders County |
140 | 0 | 0 | |
|
College of Technology West Campus Missoula · Missoula County |
140 | 0 | 0 | |
|
Eastwood Mobile Home Court Billings · Yellowstone County |
140 | 1 | 0 | |
|
Magnolia Estates Missoula · Missoula County |
140 | 0 | 0 | |
|
Middle Creek Montessori School Bozeman · Gallatin County |
140 | 0 | 0 | |
|
Old Hellgate Village Msla Missoula · Missoula County |
140 | 2 | 0 | |
|
Ramsay School District Butte · Silver Bow County |
140 | 0 | 0 | |
|
Rocky Cliff Estates Kalispell · Flathead County |
140 | 1 | 0 | |
|
Victor Grade School PWS Victor · Ravalli County |
140 | 0 | 0 | |
|
Legendary Lodge at Salmon Lake Seeley Lake · Missoula County |
139 | 0 | 0 | |
|
Corvallis Mobile Village Corvallis · Ravalli County |
138 | 0 | 0 | |
|
Philipsburg Bay Campground Philipsburg · Granite County |
138 | 2 | 0 | |
|
Two Rivers Mobile HM PK Lolo Missoula · Missoula County |
138 | 0 | 0 | |
|
Avalon Subdivision Emigrant · Park County |
135 | 0 | 0 | |
|
Marion School District 54 Kalispell · Flathead County |
135 | 0 | 0 | |
|
Northwoods Water System Coop INC Whitefish · Flathead County |
135 | 0 | 0 | |
|
Sunny Meadows Water and Sewer Dist Missoula · Missoula County |
135 | 2 | 0 | |
|
Yellowstone Bible Camp Pray Pray · Park County |
135 | 2 | 0 | |
|
MT Steakhouse Lincoln · Lewis and Clark County |
133 | 3 | 1 | |
|
Terry High School District NO 5 Terry · Prairie County |
133 | 3 | 0 | |
|
Montana Basecamp RV Resort Kalispell · Flathead County |
132 | 0 | 0 | |
|
Sunrise Terrace Subd NO 2 Kalispell · Flathead County |
131 | 1 | 0 | |
|
Amazing Ventures INC Coram · Flathead County |
130 | 1 | 1 |
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.