All water systems in Montana
2,352 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Sunny Brook Colony Chester · Chouteau County |
80 | 0 | 0 | |
|
Sunshine Academy Shepherd Shepherd · Yellowstone County |
80 | 0 | 0 | |
|
Surprise Creek Colony Stanford · Judith Basin County |
80 | 0 | 0 | |
|
Hideout LLC Deborgia · Mineral County |
79 | 3 | 0 | |
|
Hilldale Colony Havre · Hill County |
79 | 1 | 0 | |
|
Ruger Water District Helena · Lewis and Clark County |
79 | 0 | 0 | |
|
Woods Bay Marina Bigfork - Lake Co · Lake County |
79 | 0 | 0 | |
|
Big Bull Bar and Grill East Helena · Broadwater County |
78 | 0 | 0 | |
|
Big Pines Trailer Court Missoula · Missoula County |
78 | 2 | 0 | |
|
River Acres INC Missoula · Missoula County |
78 | 0 | 0 | |
|
Twin Hills Colony INC Carter · Chouteau County |
78 | 3 | 0 | |
|
A Bar Bigfork - Lake Co · Lake County |
77 | 0 | 0 | |
|
Bootlegger Inn Lincoln · Lewis and Clark County |
77 | 1 | 0 | |
|
Gateway Village System 7 Gallatin Gateway · Gallatin County |
77 | 0 | 0 | |
|
Kiwanis Camp Beaver CR Park Havre · Hill County |
77 | 1 | 0 | |
|
Larry's Six Mile Huson Huson · Missoula County |
77 | 0 | 0 | |
|
Livingston Paradise Valley KOA N Well 2 Livingston · Park County |
77 | 2 | 1 | |
|
The Chuck Wagon Bar & Grill LLC Dayton · Lake County |
77 | 0 | 0 | |
|
The Wild Mare Corvallis · Ravalli County |
77 | 1 | 0 | |
|
Three Mile Mercantile Stevensville · Ravalli County |
77 | 1 | 0 | |
|
Triple G's Resort Essex · Flathead County |
77 | 2 | 0 | |
|
High Country MHP LLC Paradise · Mineral County |
76 | 0 | 0 | |
|
Arrow Creek Trailer Court Billings · Yellowstone County |
75 | 3 | 0 | |
|
Ash Grove Cement Company Clancy · Jefferson County |
75 | 0 | 0 | |
|
Ashley Hills HOA Marion · Flathead County |
75 | 0 | 0 | |
|
Aspen Knoll Kalispell · Flathead County |
75 | 0 | 0 | |
|
Barnaby Lake HOA Eureka · Lincoln County |
75 | 0 | 0 | |
|
Beartooth Mountain Youth Camp Red Lodge · Carbon County |
75 | 0 | 0 | |
|
Big Arm Flathead Lake MT ST PK Big Arm · Lake County |
75 | 0 | 0 | |
|
Big Rose Colony Sunburst · Toole County |
75 | 0 | 0 | |
|
Bitterroot Church of the Nazarene Victor · Ravalli County |
75 | 0 | 0 | |
|
Black Rock Estates Subdivision Billings · Yellowstone County |
75 | 1 | 0 | |
|
Blue Mountain Trailer CT Missoula · Missoula County |
75 | 0 | 0 | |
|
Bluebird MB HM Park Hamilton Hamilton · Ravalli County |
75 | 0 | 0 | |
|
Bozeman Fish Technology Ctr Bozeman · Gallatin County |
75 | 2 | 0 | |
|
Bridger Base Water System Bozeman · Gallatin County |
75 | 0 | 0 | |
|
Cool Spring Colony Rudyard · Hill County |
75 | 1 | 0 | |
|
Corvallis SD Rise Charter Campus Corvallis · Ravalli County |
75 | 2 | 0 | |
|
Cuppa JO Belgrade · Gallatin County |
75 | 0 | 0 | |
|
Dakota Valley Mobile Home Park East Helena · Lewis and Clark County |
75 | 1 | 0 | |
|
Devon Water INC Shelby · Toole County |
75 | 2 | 2 | |
|
Galilee Baptist Church Stevensville · Ravalli County |
75 | 1 | 0 | |
|
Gcc Trident LLC Three Forks · Gallatin County |
75 | 0 | 0 | |
|
H Bar J Saloon and Cafe Wise River · Beaverhead County |
75 | 2 | 0 | |
|
Hamilton Public House the Victor · Ravalli County |
75 | 1 | 0 | |
|
Happy Valley Missionary Baptist Church Whitefish · Flathead County |
75 | 1 | 0 | |
|
HI Heat Industries INC Lewistown · Fergus County |
75 | 2 | 0 | |
|
Hideaway TR PK Columbia Falls Columbia Falls · Flathead County |
75 | 0 | 0 | |
|
LA Quinta Inn and Suites Belgrade · Gallatin County |
75 | 1 | 0 | |
|
Lake Shore Lodge Mcallister · Madison County |
75 | 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.