All water systems in Montana
1,183 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
ST Mary KOA County |
700 | 1 | 0 | |
|
Lost Trail Powder Mtn Sula Conner · Ravalli County |
690 | 2 | 0 | |
|
Hope Church Kalispell · Flathead County |
650 | 0 | 0 | |
|
Many Glacier Lodge Hotel Babb · Glacier County |
650 | 0 | 0 | |
|
Nevada City Helena · Madison County |
621 | 2 | 0 | |
|
Lewis and Clark Caverns Visitor Center Cardwell · Jefferson County |
615 | 0 | 0 | |
|
Lolo Super Stop Missoula · Missoula County |
615 | 0 | 0 | |
|
Big Timber KOA Big Timber · Sweet Grass County |
600 | 1 | 0 | |
|
East Bound Hathaway Rest Area Forsyth · Rosebud County |
600 | 0 | 0 | |
|
Jefferson City South Rest Stop Jefferson City · Jefferson County |
600 | 2 | 0 | |
|
Lone Pine Store Hamilton · Ravalli County |
600 | 0 | 0 | |
|
Stokes Market Florence Florence · Ravalli County |
600 | 2 | 1 | |
|
Town Pump Travel Plaza Glendive Glendive · Dawson County |
600 | 3 | 1 | |
|
Travel Centers of America Truck Plaza Laurel · Yellowstone County |
600 | 0 | 0 | |
|
Two Medicine Ranger Station West Glacier · Glacier County |
600 | 0 | 0 | |
|
WB Hathaway Rest Area Forsyth · Rosebud County |
600 | 0 | 0 | |
|
Westgate Cenex Glendive · Dawson County |
600 | 2 | 0 | |
|
White Sandy Campground Helena · Lewis and Clark County |
600 | 1 | 0 | |
|
Wilson Foods Arlee · Lake County |
600 | 2 | 1 | |
|
T and T Subdivision Wolf Creek · Lewis and Clark County |
531 | 2 | 1 | |
|
Town Pump Anaconda 1 Anaconda · Deer Lodge County |
524 | 0 | 0 | |
|
Snowbowl Lodge Missoula · Missoula County |
521 | 2 | 0 | |
|
Lincolns Silver Dollar Bar Haugan · Mineral County |
520 | 0 | 0 | |
|
Green Investments Frenchtown · Missoula County |
518 | 0 | 0 | |
|
Glacier Raft Company West Glacier · Flathead County |
515 | 0 | 0 | |
|
Armington Jct Belt Rest Stop Belt · Cascade County |
510 | 2 | 0 | |
|
Caseys Corner Store NO 6 Big Sky · Gallatin County |
510 | 1 | 0 | |
|
Blessed Trinity Catholic Community Missoula · Missoula County |
508 | 0 | 0 | |
|
Trails End Ranch Ekalaka · Carter County |
508 | 1 | 0 | |
|
Fortine Mercantile Trego · Lincoln County |
504 | 2 | 0 | |
|
Zootown Super Stop Missoula · Missoula County |
504 | 0 | 0 | |
|
Earthquake Lake Visitor Center West Yellowstone · Madison County |
503 | 2 | 0 | |
|
Eddies Corner Moore · Fergus County |
503 | 2 | 0 | |
|
Our Lady of the Valley Catholic Church Helena · Lewis and Clark County |
502 | 1 | 1 | |
|
Devils Elbow Rec Site Helena · Lewis and Clark County |
501 | 1 | 0 | |
|
Big Sky Water Slide Col Falls Columbia Falls · Flathead County |
500 | 0 | 0 | |
|
Canyons Athletic Club the Hamilton · Ravalli County |
500 | 0 | 0 | |
|
Divide Feely North Rest Stop Butte · Silver Bow County |
500 | 0 | 0 | |
|
Divide Feely South Rest Stop Butte · Silver Bow County |
500 | 0 | 0 | |
|
Dutton Rest Stop Dutton · Teton County |
500 | 1 | 0 | |
|
Ennis S Raynolds Pass Rest Area Ennis · Madison County |
500 | 1 | 0 | |
|
Hysham Rest Area Westbound Hysham · Treasure County |
500 | 0 | 0 | |
|
Lds Church Columbia Falls Columbia Falls · Flathead County |
500 | 0 | 0 | |
|
One Stop Hot Springs · Sanders County |
500 | 3 | 0 | |
|
Sage Lodge Emigrant · Park County |
500 | 0 | 0 | |
|
Yellowstone Travel Plaza Truck Stop Livingston · Park County |
500 | 2 | 0 | |
|
Grubstake Lounge and Restaurant Helena · Lewis and Clark County |
470 | 1 | 0 | |
|
Anaconda Interchange Rest Area Anaconda · Deer Lodge County |
465 | 1 | 0 | |
|
Olde Dairy Missoula · Missoula County |
460 | 0 | 0 | |
|
Showdown Ski Lift INC Neihart · Meagher County |
448 | 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.