All water systems in Montana
1,183 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Mountain View Co-Op Ulm Ulm · Cascade County |
421 | 1 | 0 | |
|
Woodys Country Store Kalispell · Flathead County |
418 | 2 | 0 | |
|
Blacktail Grocery Lakeside · Flathead County |
413 | 0 | 0 | |
|
Clearwater Bar Paws UP Ranch Greenough · Missoula County |
413 | 0 | 0 | |
|
Anderson Stevenson Wilke Funeral Home Helena · Lewis and Clark County |
411 | 1 | 0 | |
|
Bannack ST Park Visitor Center Dillon · Beaverhead County |
410 | 0 | 0 | |
|
Park Cafe & Grocery County |
410 | 1 | 0 | |
|
Libby Christian Church Libby · Lincoln County |
406 | 0 | 0 | |
|
Fics Kwik Six Drummond · Granite County |
405 | 1 | 0 | |
|
Blue Bay Campground County |
404 | 0 | 0 | |
|
Seeley Lake Campground Seeley Lake · Missoula County |
404 | 0 | 0 | |
|
Discovery Ski Area Anaconda · Granite County |
401 | 2 | 0 | |
|
Bridger Rest Area Silesia · Carbon County |
400 | 2 | 1 | |
|
Custer Rest Area Eastbound Billings · Yellowstone County |
400 | 0 | 0 | |
|
Custer Rest Area Westbound Billings · Yellowstone County |
400 | 0 | 0 | |
|
Hysham Rest Area Eastbound Hysham · Treasure County |
400 | 0 | 0 | |
|
Lake McDonald Lodge West Glacier · Flathead County |
400 | 0 | 0 | |
|
Rising Sun Campground West Glacier · Glacier County |
400 | 0 | 0 | |
|
Roots Christian Fellowship Hamilton · Ravalli County |
400 | 0 | 0 | |
|
Swiftcurrent Campground Babb · Glacier County |
400 | 1 | 0 | |
|
Trail Star Cafe and Truck Stop Glendive · Dawson County |
400 | 0 | 0 | |
|
Troy Rest Area Troy · Lincoln County |
400 | 1 | 0 | |
|
ST Regis Travel Center St Regis · Mineral County |
374 | 0 | 0 | |
|
Corner Store Bozeman Bozeman · Gallatin County |
373 | 0 | 0 | |
|
Galloups Slide Inn INC Cameron · Madison County |
365 | 1 | 1 | |
|
Great Divide Ski Area Marysville · Lewis and Clark County |
364 | 0 | 0 | |
|
West Glacier KOA Campground West Glacier · Flathead County |
360 | 0 | 0 | |
|
Holter Lake Rec Site CG NO 15 Blm Wolf Creek · Lewis and Clark County |
352 | 0 | 0 | |
|
Maverick Mountain Resort LLC Polaris · Beaverhead County |
340 | 2 | 0 | |
|
K-M Scout Ranch Water System Great Falls · Fergus County |
325 | 0 | 0 | |
|
Zoomontana INC Billings · Yellowstone County |
324 | 0 | 0 | |
|
Lds Church Corvallis Corvallis · Ravalli County |
320 | 0 | 0 | |
|
Rock Creek Resort Red Lodge Red Lodge · Carbon County |
320 | 2 | 0 | |
|
West Glacier RV Flathead County |
320 | 0 | 0 | |
|
Glacier View Golf Club West Glacier · Flathead County |
319 | 0 | 0 | |
|
Town Pump 1033 Big Timber # 2 Big Timber · Sweet Grass County |
318 | 0 | 0 | |
|
Big Sky Bible Camp – Cabins and Dining H Bigfork · Flathead County |
315 | 0 | 0 | |
|
Last Chance Chapel Helena · Lewis and Clark County |
313 | 1 | 0 | |
|
Best Burger Drive in Bozeman · Gallatin County |
310 | 2 | 1 | |
|
Ferndale Market Ferndale Bigfork - Lake Co · Flathead County |
310 | 0 | 0 | |
|
Aitkens Quick Stop Noxon · Sanders County |
306 | 0 | 0 | |
|
Log Gulch Recreation Site Blm Wolf Creek · Lewis and Clark County |
306 | 1 | 0 | |
|
Majestic Valley Arena Kalispell · Flathead County |
306 | 0 | 0 | |
|
Milltown (missoula) Dollar General Missoula · Missoula County |
306 | 0 | 0 | |
|
Archer Acres Whitefish · Flathead County |
305 | 1 | 0 | |
|
Avon Family Cafe Avon · Powell County |
305 | 1 | 0 | |
|
Ksanka Motel and Mini Mart Eureka · Lincoln County |
305 | 2 | 1 | |
|
Tongue River Campers Point Decker · Big Horn County |
305 | 0 | 0 | |
|
Two Sisters Babb · Glacier County |
305 | 1 | 0 | |
|
Montana City Dollar General Montana City · Jefferson County |
303 | 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.