All water systems in Montana
2,352 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Camp Ponderosa LLC Swan Lake · Lake County |
35 | 0 | 0 | |
|
Catlin Street Mobile Court Missoula · Missoula County |
35 | 1 | 1 | |
|
Clarice Paul Water System County |
35 | 1 | 0 | |
|
Creekside Motel RV and Trlr PK Eureka · Lincoln County |
35 | 3 | 0 | |
|
Elk Park Village Columbia Falls · Flathead County |
35 | 1 | 1 | |
|
Emigrant House Emigrant · Park County |
35 | 2 | 0 | |
|
Eureka Therapy Eureka · Lincoln County |
35 | 1 | 0 | |
|
Fin's Tap House Corvallis · Ravalli County |
35 | 2 | 1 | |
|
Fish Wildlife and Parks R2 Headquarters Missoula · Missoula County |
35 | 0 | 0 | |
|
Glacier Business Center Whitefish · Flathead County |
35 | 0 | 0 | |
|
Hillside Homes Lakeside · Flathead County |
35 | 1 | 0 | |
|
Jehovahs Witnesses Noxon Kingdom Hall Noxon · Sanders County |
35 | 0 | 0 | |
|
Johnsons Mobile Home Park Libby · Lincoln County |
35 | 1 | 0 | |
|
Juniper Trailer Court Msla Missoula · Missoula County |
35 | 0 | 0 | |
|
Kingdom Hall of Jehovahs Witnesses Dillon · Beaverhead County |
35 | 2 | 0 | |
|
Lds Church Forsyth Forsyth · Rosebud County |
35 | 2 | 0 | |
|
Ledgewood Estates Kalispell · Flathead County |
35 | 1 | 0 | |
|
Libby Creek Mobile Park Llc-Unapproved Libby · Lincoln County |
35 | 0 | 0 | |
|
Pine Butte Choteau · Teton County |
35 | 2 | 0 | |
|
Ponderilla Hills Lake County Water Sewer Polson · Lake County |
35 | 1 | 0 | |
|
Ranch Bar the Anaconda · Deer Lodge County |
35 | 1 | 0 | |
|
Ridgeview Water Users Assoc Kalispell · Flathead County |
35 | 0 | 0 | |
|
Rocky Creek TR Court Bozeman · Gallatin County |
35 | 0 | 0 | |
|
Safeway NO 1158 Deer Lodge · Powell County |
35 | 1 | 0 | |
|
Sartorie Legacy Homes Billings · Yellowstone County |
35 | 1 | 0 | |
|
Sfe Hamilton · Ravalli County |
35 | 1 | 1 | |
|
Sleeping Buffalo Hot Springs INC Saco · Phillips County |
35 | 3 | 1 | |
|
Trails End TR Park Helena Helena · Lewis and Clark County |
35 | 0 | 0 | |
|
Trapper Springs Campground and Day Use Norris · Madison County |
35 | 1 | 0 | |
|
Vaeroy Enterprises, INC Missoula · Missoula County |
35 | 0 | 0 | |
|
Western Montana State Veterans Cemetery Missoula · Missoula County |
35 | 0 | 0 | |
|
Alley Cat Bowling and Bar the Choteau · Teton County |
34 | 0 | 0 | |
|
Crystal Lake Subdivision HOA Fortine · Lincoln County |
34 | 0 | 0 | |
|
East Bay Subdivision County |
34 | 1 | 0 | |
|
Family Life Christian Church Kalispell · Flathead County |
34 | 1 | 0 | |
|
Libby Dam RV Park Libby · Lincoln County |
34 | 1 | 0 | |
|
Rock Creek Cattle Company Golf Course Deer Lodge · Powell County |
34 | 0 | 0 | |
|
Ryans Lot Missoula · Missoula County |
34 | 3 | 0 | |
|
Weyerhaeuser Mdf Columbia Falls · Flathead County |
34 | 0 | 0 | |
|
Allens Manix Store Augusta · Lewis and Clark County |
33 | 1 | 0 | |
|
AT Home Assisted Living Missoula · Missoula County |
33 | 0 | 0 | |
|
Buffalo Ranch Water Company Livingston · Park County |
33 | 2 | 0 | |
|
Columbus Iga Columbus · Stillwater County |
33 | 0 | 0 | |
|
Crown of the Continent DC West Glacier · Flathead County |
33 | 0 | 0 | |
|
Diamond S RV Park Ronan Ronan · Lake County |
33 | 2 | 1 | |
|
Grassy Mountain Ranch White Sulphur Springs · Meagher County |
33 | 1 | 0 | |
|
Hadley Road HOA Kalispell · Flathead County |
33 | 0 | 0 | |
|
Libby Work Center Libby · Lincoln County |
33 | 1 | 1 | |
|
North Davis Duplexes 421 Missoula · Missoula County |
33 | 0 | 0 | |
|
Parma Adddition Essex Unapproved Essex · Flathead County |
33 | 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.