All water systems in Montana
2,352 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Camelot Ranch Event Center Billings · Yellowstone County |
300 | 1 | 0 | |
|
Clyde Park Water Dept Clyde Park · Park County |
300 | 6 | 0 | |
|
Cooke City Water District Cooke City · Park County |
300 | 1 | 0 | |
|
Frenchtown Pond State Park Missoula · Missoula County |
300 | 0 | 0 | |
|
Frontier Inn Great Falls · Cascade County |
300 | 0 | 0 | |
|
Haufbrau Anaconda · Deer Lodge County |
300 | 1 | 0 | |
|
Hildreth Subdivision NO 2 Dillon · Beaverhead County |
300 | 2 | 0 | |
|
Holter Dam CG Blm Wolf Creek · Lewis and Clark County |
300 | 1 | 0 | |
|
Keller Subdivision NO 2 HOA Dillon · Beaverhead County |
300 | 2 | 0 | |
|
Kims Marina and Resort Helena · Lewis and Clark County |
300 | 3 | 2 | |
|
Lincoln School District NO 38 Lincoln · Lewis and Clark County |
300 | 0 | 0 | |
|
Mobile City Home Park NO 2 Helena · Lewis and Clark County |
300 | 1 | 0 | |
|
Mountain Meadows Estates LLP Bozeman · Gallatin County |
300 | 0 | 0 | |
|
Mountain Villa Apts Kalispell Kalispell · Flathead County |
300 | 0 | 0 | |
|
Nashua Town of Nashua · Valley County |
300 | 3 | 1 | |
|
Ncmrwa North Shelby Shelby · Toole County |
300 | 1 | 0 | |
|
Northwest Water Conditioning Culligan W Laurel · Yellowstone County |
300 | 0 | 0 | |
|
Oilmont County Water District Shelby · Toole County |
300 | 1 | 0 | |
|
Palisades Campground Dillon · Madison County |
300 | 1 | 0 | |
|
Park City School K 12 Park City · Stillwater County |
300 | 0 | 0 | |
|
Peter Yegen JR Golf Club Billings · Yellowstone County |
300 | 1 | 0 | |
|
Picchionis Iga Roundup · Musselshell County |
300 | 1 | 0 | |
|
Roberts Wua Carbon CO Water and Sewer Roberts · Carbon County |
300 | 0 | 0 | |
|
Rockvale Travel Plaza Joliet Silesia · Carbon County |
300 | 0 | 0 | |
|
Seville Water System County |
300 | 5 | 0 | |
|
Snowline Acres Kalispell · Flathead County |
300 | 1 | 0 | |
|
Tongue River Pee Wee Point Decker · Big Horn County |
300 | 0 | 0 | |
|
Town and Country Dba Market Basket Billings · Yellowstone County |
300 | 0 | 0 | |
|
Jette Lake Landowners Association Polson · Lake County |
295 | 1 | 1 | |
|
Northern Pines Community HOA Kalispell · Flathead County |
295 | 0 | 0 | |
|
Canyon Ferry Road Baptist Church Helena · Lewis and Clark County |
292 | 1 | 1 | |
|
Centerville School Sand Coulee · Cascade County |
292 | 1 | 0 | |
|
Lame Deer High School County |
291 | 5 | 2 | |
|
Anaconda Ccc Anaconda · Deer Lodge County |
290 | 1 | 0 | |
|
Kevin Town of Kevin · Toole County |
290 | 0 | 0 | |
|
Thorpe Commercial Center North Belgrade · Gallatin County |
288 | 1 | 0 | |
|
X Overland Ranch Three Forks · Gallatin County |
288 | 1 | 0 | |
|
Great Falls KOA Kampground Great Falls · Cascade County |
287 | 1 | 0 | |
|
Pipestone RV Park Whitehall · Jefferson County |
286 | 1 | 0 | |
|
Quality Inn Belgrade · Gallatin County |
282 | 0 | 0 | |
|
Troy Ranger Station Troy · Lincoln County |
282 | 0 | 0 | |
|
Wyola Water System County |
281 | 10 | 1 | |
|
AP Williams Kalispell · Flathead County |
280 | 0 | 0 | |
|
Highwood County Water and Sewer District Highwood · Chouteau County |
280 | 2 | 0 | |
|
Lone Rock School District NO 13 Stevensville · Ravalli County |
280 | 0 | 0 | |
|
Murdochs Ranch Supply Bozeman Bozeman · Gallatin County |
280 | 1 | 0 | |
|
Ridgewood Terrace MHP Kalispell · Flathead County |
280 | 0 | 0 | |
|
Smith Valley School Lower Kalispell · Flathead County |
280 | 0 | 0 | |
|
Lima Town of Lima · Beaverhead County |
279 | 0 | 0 | |
|
Pache Water System County |
276 | 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.