All water systems in Montana
2,352 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Daves Express Lube Helena · Lewis and Clark County |
966 | 0 | 0 | |
|
Deanos Travel Plaza Missoula · Missoula County |
959 | 2 | 0 | |
|
Meadow Lake CO Water and Sewer District Columbia Falls · Flathead County |
950 | 1 | 0 | |
|
Mountain View Coop Lincoln Lincoln · Lewis and Clark County |
950 | 0 | 0 | |
|
Westview Mobile Home Park Missoula · Missoula County |
947 | 2 | 1 | |
|
Town Pump Missoula 7 Wye Missoula · Missoula County |
935 | 0 | 0 | |
|
Town Pump Dillon 2 Dillon · Beaverhead County |
924 | 0 | 0 | |
|
Bison Range County |
915 | 0 | 0 | |
|
Town Pump Columbia Falls 2 Columbia Falls · Flathead County |
910 | 0 | 0 | |
|
ST Mary Lodge and Resort St Mary · Glacier County |
908 | 0 | 0 | |
|
Glacier Bible Camp Hungry Horse · Flathead County |
903 | 0 | 0 | |
|
Corvallis Gym and Middle School Corvallis · Ravalli County |
900 | 0 | 0 | |
|
Culligan Water Conditioning Great Falls Great Falls · Cascade County |
900 | 1 | 0 | |
|
Pioneer Water Service Billings · Yellowstone County |
900 | 1 | 0 | |
|
Hardin Eastbound Rest Area Hardin · Big Horn County |
877 | 1 | 0 | |
|
GO 2 U Water Delivery Laurel · Yellowstone County |
875 | 1 | 0 | |
|
Chester Town of Chester · Liberty County |
870 | 1 | 0 | |
|
Darby Town of Darby · Ravalli County |
850 | 1 | 1 | |
|
Christian Life Center Missoula · Missoula County |
846 | 0 | 0 | |
|
Hays/white Cow Canyon WS County |
840 | 0 | 0 | |
|
Valley Grove Subdivision Bozeman · Gallatin County |
825 | 0 | 0 | |
|
Harlem City of Harlem · Blaine County |
820 | 5 | 1 | |
|
Oles Country Store Stevensville · Ravalli County |
820 | 2 | 0 | |
|
Thriftway Super Stop #8 Bozeman Bozeman · Gallatin County |
817 | 1 | 0 | |
|
Phantom Hills Water System Missoula · Missoula County |
810 | 0 | 0 | |
|
Dearborn N Craig Rest Stop Craig · Lewis and Clark County |
808 | 1 | 0 | |
|
Frenchies Super Stop Missoula · Missoula County |
808 | 0 | 0 | |
|
Bears Country Store Libby · Lincoln County |
805 | 2 | 0 | |
|
Columbus Rest Area Eastbound Columbus · Stillwater County |
800 | 0 | 0 | |
|
Columbus Rest Area Westbound Columbus · Stillwater County |
800 | 0 | 0 | |
|
Emigrant Rest Stop Emigrant · Park County |
800 | 0 | 0 | |
|
Estates at Yellowstone LLC Billings · Yellowstone County |
800 | 2 | 0 | |
|
Pinesdale Town of Pinesdale · Ravalli County |
800 | 0 | 0 | |
|
Shepherd Schools Shepherd · Yellowstone County |
800 | 3 | 1 | |
|
Worden Ballantine Yellowstone Ballantine, Worden · Yellowstone County |
800 | 4 | 2 | |
|
Jefferson Hills Wua Helena · Jefferson County |
780 | 3 | 1 | |
|
Golden Meadows Subdivision Billings · Yellowstone County |
772 | 1 | 0 | |
|
Big Sky Food and Fuel INC East Helena · Lewis and Clark County |
770 | 0 | 0 | |
|
Glacier Park INC East Glacier · Glacier County |
765 | 0 | 0 | |
|
Somers CO Water and Sewer Dist Somers · Flathead County |
765 | 0 | 0 | |
|
Town Pump Gore Hill Great Falls · Cascade County |
760 | 0 | 0 | |
|
Caseys Corner 9 Gallatin Gateway · Gallatin County |
759 | 1 | 0 | |
|
Bridger Town of Bridger · Carbon County |
750 | 1 | 0 | |
|
Fisher Water Service Billings · Yellowstone County |
750 | 1 | 0 | |
|
Landmark Subdivision Bozeman · Gallatin County |
750 | 0 | 0 | |
|
Ten Mile and Pleasant Valley Wua Helena · Lewis and Clark County |
750 | 2 | 1 | |
|
Tiber County Water District Conrad · Pondera County |
750 | 5 | 0 | |
|
Town Pump Lolo 1 Lolo · Missoula County |
744 | 0 | 0 | |
|
Town Pump Belgrade 4 Belgrade · Gallatin County |
730 | 1 | 0 | |
|
West Gate KOA CG West Yellowstone · Gallatin County |
722 | 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.