All water systems in Montana
2,352 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Hinsdale Water Department Hinsdale · Valley County |
250 | 2 | 1 | |
|
Lexley Acres Mobile Home Park Belgrade · Gallatin County |
250 | 2 | 2 | |
|
Montana City Grill and Saloon Clancy · Jefferson County |
250 | 0 | 0 | |
|
New Life Church Billings · Yellowstone County |
250 | 0 | 0 | |
|
Pictograph Cave State Park Billings · Yellowstone County |
250 | 0 | 0 | |
|
Precision Water Billings · Yellowstone County |
250 | 1 | 0 | |
|
Ranchview Estates Wua Helena · Lewis and Clark County |
250 | 1 | 0 | |
|
Ridgewood Estates Bigfork - Lake Co · Lake County |
250 | 1 | 0 | |
|
Signal Peak Energy Bull Mountain Coal Roundup · Musselshell County |
250 | 0 | 0 | |
|
Sorrel Springs HOA Frenchtown · Missoula County |
250 | 1 | 1 | |
|
Spring Meadow Lake State Park Helena · Lewis and Clark County |
250 | 0 | 0 | |
|
Starr School Water System County |
250 | 3 | 0 | |
|
Tractor Supply Company Glendive Glendive · Dawson County |
250 | 0 | 0 | |
|
Vandalia Glasgow West Rest Area Glasgow · Valley County |
250 | 0 | 0 | |
|
Wilsall Water District Wilsall · Park County |
250 | 1 | 1 | |
|
Ponderosa Homeowners Assn INC Kalispell · Flathead County |
246 | 0 | 0 | |
|
Golden Meadows Subdivision 2nd CC Billings · Yellowstone County |
245 | 1 | 0 | |
|
Red Fox Supper Club Helena · Lewis and Clark County |
245 | 1 | 0 | |
|
Fort Peck Town of Fort Peck · Valley County |
240 | 3 | 0 | |
|
Kenyon Noble Lumber Company Bozeman · Gallatin County |
240 | 1 | 0 | |
|
Missoula Country Club Missoula · Missoula County |
240 | 0 | 0 | |
|
Stillwater Free Lutheran Church Kalispell · Flathead County |
240 | 0 | 0 | |
|
Wells Garden Estates Billings · Yellowstone County |
240 | 2 | 0 | |
|
Yellowstone Boys and Girls Ranch Billings · Yellowstone County |
240 | 0 | 0 | |
|
Four Corners Steak and Tap Eureka · Lincoln County |
238 | 0 | 0 | |
|
Green Tree Meadows County W and S Dist Kalispell · Flathead County |
237 | 0 | 0 | |
|
Skycrest Estates Subdivision Billings · Yellowstone County |
235 | 1 | 0 | |
|
Springhill Plaza Condo Assoc Bozeman · Gallatin County |
235 | 0 | 0 | |
|
Steer Inn Teasers Restaurant and Lounge Three Forks · Broadwater County |
233 | 0 | 0 | |
|
Hebgen Lake Estates CO Water Sewer Distr West Yellowstone · Gallatin County |
230 | 1 | 0 | |
|
Hilltop Terrace Subdivision Kalispell · Flathead County |
230 | 1 | 0 | |
|
Huntley Yellowstone CO Water and Sewer Huntley · Yellowstone County |
230 | 0 | 0 | |
|
Kokanee Bend HOA Columbia Falls · Flathead County |
230 | 2 | 0 | |
|
Ryan Dam Water System Great Falls · Cascade County |
230 | 1 | 0 | |
|
Spirit Hills Subdivision Bozeman · Gallatin County |
230 | 0 | 0 | |
|
Neihart Town of Neihart · Cascade County |
229 | 2 | 1 | |
|
Grass Land Estates Helena · Lewis and Clark County |
228 | 1 | 0 | |
|
Crystal Springs Water System Billings · Yellowstone County |
225 | 2 | 0 | |
|
Golden Estates Trailer Court Helena · Lewis and Clark County |
225 | 0 | 0 | |
|
Holmberg Village Estates Helena · Lewis and Clark County |
225 | 1 | 0 | |
|
Pettyjohns the Water Store Kalispell · Flathead County |
225 | 1 | 0 | |
|
Sage Creek CO Water District Chester · Liberty County |
225 | 3 | 1 | |
|
Turtle Lake Water System County |
225 | 1 | 0 | |
|
Glens Cafe Florence · Ravalli County |
223 | 0 | 0 | |
|
Gray Wolf Casino County |
223 | 1 | 0 | |
|
Rimrock Lodge Thompson Falls · Sanders County |
223 | 0 | 0 | |
|
Cottonwood Hills INC Bozeman · Gallatin County |
222 | 0 | 0 | |
|
Anderson School Bozeman · Gallatin County |
220 | 7 | 1 | |
|
Elmo Water System County |
220 | 1 | 0 | |
|
Headquarters Building Region 4 Great Falls · Cascade County |
220 | 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.