All water systems in Montana
2,352 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Aldinger Acres Subdivision Billings · Yellowstone County |
100 | 1 | 0 | |
|
Bear Creek Village Bigfork Bigfork - Lake Co · Flathead County |
100 | 0 | 0 | |
|
Big Bend Ranch Subdivision Great Falls · Cascade County |
100 | 4 | 1 | |
|
Big Sky Speedway Billings · Yellowstone County |
100 | 1 | 0 | |
|
Black Sandy State Park Helena · Lewis and Clark County |
100 | 0 | 0 | |
|
Bozeman Food Coop Water Dispenser Bozeman · Gallatin County |
100 | 0 | 0 | |
|
Bryant NO 3 Subdivision Helena · Lewis and Clark County |
100 | 1 | 0 | |
|
Bynum Teton CO W & S District Bynum · Teton County |
100 | 3 | 1 | |
|
Canyon View Church Hamilton · Ravalli County |
100 | 2 | 0 | |
|
Cattlemen's Cafe Sidney · Richland County |
100 | 2 | 0 | |
|
Causeway Chalet Helena · Lewis and Clark County |
100 | 3 | 1 | |
|
Chinaman Gulch Campground Helena · Lewis and Clark County |
100 | 2 | 0 | |
|
Christikon Mcleod · Park County |
100 | 1 | 0 | |
|
Cmrwa Musselshell Judith Rural Water Sys Harlowton · Wheatland County |
100 | 2 | 0 | |
|
Country Haven Estates Whispering Pines Columbus · Stillwater County |
100 | 4 | 0 | |
|
Custer School Dist NO 15 Custer · Yellowstone County |
100 | 1 | 1 | |
|
Dailys Premium Meats Missoula · Missoula County |
100 | 1 | 0 | |
|
East End Colony INC Havre · Hill County |
100 | 0 | 0 | |
|
Encampment Trail Big Sky · Madison County |
100 | 0 | 0 | |
|
Fat Fender Freddys Laurel · Yellowstone County |
100 | 0 | 0 | |
|
Fish Creek Campground West Glacier · Flathead County |
100 | 0 | 0 | |
|
Gallatin Village Mob HM Park Bozeman · Gallatin County |
100 | 3 | 2 | |
|
Godfrey Canyon Estates Manhattan · Gallatin County |
100 | 0 | 0 | |
|
Golden Valley Colony Ryegate · Golden Valley County |
100 | 0 | 0 | |
|
Grace Lutheran Childcare and Preschool Hamilton · Ravalli County |
100 | 0 | 0 | |
|
Hardin KOA Cistern Hardin · Big Horn County |
100 | 1 | 1 | |
|
Harrison School District NO 23 Harrison · Madison County |
100 | 3 | 0 | |
|
Headwaters Rest Area Three Forks · Broadwater County |
100 | 2 | 0 | |
|
Hillside Colony INC Sweetgrass · Toole County |
100 | 0 | 0 | |
|
Hilltop Colony Stockett · Cascade County |
100 | 0 | 0 | |
|
Hunters Alley Bar and Grill Elliston · Powell County |
100 | 2 | 0 | |
|
J Neils Memorial Park Libby · Lincoln County |
100 | 0 | 0 | |
|
Jefferson City North Rest Stop Jefferson City · Jefferson County |
100 | 2 | 0 | |
|
Johnsrud Fas Missoula · Missoula County |
100 | 0 | 0 | |
|
Kingdom Hall Libby · Lincoln County |
100 | 0 | 0 | |
|
L and M Building Stevensville · Ravalli County |
100 | 1 | 0 | |
|
Lakeshore Heights HOA Kalispell · Flathead County |
100 | 0 | 0 | |
|
Lds Church Plains Plains · Sanders County |
100 | 0 | 0 | |
|
Lost Moose Meadows Campground Lincoln · Lewis and Clark County |
100 | 0 | 0 | |
|
Mobile City Home Park NO 1 Helena · Lewis and Clark County |
100 | 1 | 0 | |
|
Mosby Rest Area Winnett · Garfield County |
100 | 1 | 0 | |
|
Mountain Sky Guest Ranch LLC Emigrant · Park County |
100 | 2 | 0 | |
|
New Life Lutheran Church Helena · Lewis and Clark County |
100 | 0 | 0 | |
|
OS Management LLC Emigrant · Park County |
100 | 2 | 1 | |
|
Outdoorsmen Church Missoula · Missoula County |
100 | 1 | 1 | |
|
Perrys Water Service Chinook · Blaine County |
100 | 1 | 0 | |
|
Pompey's Pillar National Monument Pompeys Pillar · Yellowstone County |
100 | 1 | 0 | |
|
Pure Water-Foodworks Livingston Livingston · Park County |
100 | 0 | 0 | |
|
Quick Stop Drive in Joliet · Carbon County |
100 | 2 | 0 | |
|
Rainbow Point Campground Bozeman · Gallatin County |
100 | 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.