Montana Environmental Profile
Comprehensive environmental data from EPA sources for Montana (MT)
Overview
TRI Facilities
66
Water Systems
809
Superfund Sites
19
Total Violations
1,430
Total Releases
52.4M lbs
Health Violations
198
water systems
Largest Polluters
View all →| # | Facility | Total Releases |
|---|---|---|
| 1 | MONTANA RESOURCES LLC | 40.1M lbs |
| 2 | COLSTRIP STEAM ELECTRIC STATION | 9.2M lbs |
| 3 | SMC NYE MINE SITE | 724.9K lbs |
| 4 | STILLWATER MINING CO EAST BOULDER MINE | 409.5K lbs |
| 5 | BIG SKY SCIENTIFIC L.L.C. | 282.8K lbs |
| 6 | COLSTRIP ENERGY LP ROSEBUD POWER PLANT | 221.6K lbs |
| 7 | CHS INC. LAUREL REFINERY | 182.3K lbs |
| 8 | PAR MONTANA BILLINGS REFINERY | 157.8K lbs |
| 9 | WEYERHAEUSER NR | 139.6K lbs |
| 10 | CALUMET MONTANA REFINING LLC. | 123.1K lbs |
| 11 | JUPITER SULPHUR LLC | 117.5K lbs |
| 12 | HARDIN GENERATING STATION | 114.5K lbs |
| 13 | WESTERN SUGAR COOPERATIVE.130130 | 106.0K lbs |
| 14 | PHILLIPS 66 CO BILLINGS REFINERY | 82.5K lbs |
| 15 | ROSEBURG FOREST PRODUCTS CO. - MISSOULA PARTICLEBOARD | 82.3K lbs |
| 16 | BARRICK GOLD CORP-GOLDEN SUNLIGHT MINE | 66.8K lbs |
| 17 | GCC-THREE FORKS LLC | 42.2K lbs |
| 18 | GRAYMONT WESTERN US INC INDIAN CREEK LIME PRODUCTION | 42.2K lbs |
| 19 | DAVE GATES GENERATING STATION | 26.9K lbs |
| 20 | LUBRIZOL | 20.0K lbs |
Water Quality
Systems with Health Violations
| Water System | Population | Violations |
|---|---|---|
| DENTON TOWN OF | 255 | 155 |
| FORT BELKNAP AGENCY WATER SYSTEM | 2,100 | 125 |
| WHITEHALL TOWN OF | 1,500 | 87 |
| HARLEM CITY OF | 820 | 68 |
| BEAVERHEAD JACKSON WATER AND SEWER DIST | 58 | 62 |
| ST LABRE INDIAN SCHOOL | 650 | 59 |
| CROW AGENCY WATER SYSTEM | 1,300 | 36 |
| KING RANCH COLONY | 56 | 36 |
| NCMRWA TIBER SERVICE AREA | 200 | 29 |
| CLARKS LOOKOUT | 62 | 26 |
| BLUE CLOUD SUBDIVISION | 60 | 26 |
| PHILIPSBURG TOWN OF | 1,360 | 25 |
| RICHLAND CO VALLEY VIEW WUA | 85 | 25 |
| ARROW CREEK TRAILER COURT | 75 | 21 |
| BLUE SKY HEIGHTS WUA CLANCY | 250 | 20 |
| TURNER COLONY | 50 | 20 |
| RIVERVIEW COLONY | 130 | 20 |
| HYSHAM TOWN OF | 262 | 19 |
| BEE HIVE HOMES MSLA | 106 | 19 |
| TIBER COUNTY WATER DISTRICT | 750 | 17 |
Cities with Water Issues
Big Timber
Pop: —
Laurel
Pop: —
Billings
Pop: —
Sidney
Pop: —
Miles City
Pop: —
Colstrip
Pop: —
Glendive
Pop: —
Great Falls
Pop: —
Shelby
Pop: —
Helena
Pop: —
Clancy
Pop: —
East Helena
Pop: —
Butte
Pop: —
Belgrade
Pop: —
Bozeman
Pop: —
Anaconda
Pop: —
Three Forks
Pop: —
Whitehall
Pop: —
Missoula
Pop: —
Hamilton
Pop: —
Superfund Sites (19)
| Site Name | Status | HRS Score |
|---|---|---|
| ACM Smelter and Refinery | NPL Site | 54.26 |
| Anaconda Aluminum Co Columbia Falls Reduction Plant | NPL Site | 68.39 |
| Anaconda Co. Smelter | NPL Site | 58.71 |
| Barker Hughesville Mining District | NPL Site | 50.00 |
| Basin Mining Area | NPL Site | 61.15 |
| Billings PCE | NPL Site | 50.00 |
| Carpenter Snow Creek Mining District | NPL Site | 50.00 |
| East Helena Site | NPL Site | 61.65 |
| Flat Creek IMM | NPL Site | 51.33 |
| Idaho Pole Co. | NPL Site | 38.29 |
| Libby Asbestos | NPL Site | 0.00 |
| Libby Ground Water Contamination | NPL Site | 37.67 |
| Lockwood Solvent Ground Water Plume | NPL Site | 45.69 |
| Milltown Reservoir Sediments | NPL Site | 43.78 |
| Montana Pole and Treating | NPL Site | 33.03 |
| Mouat Industries | NPL Site | 31.66 |
| Silver Bow Creek/Butte Area | NPL Site | 63.76 |
| Smurfit-Stone Mill | Proposed NPL Site | 50.00 |
| Upper Tenmile Creek Mining Area | NPL Site | 50.00 |
Counties (26 total)
| County | Population | Facilities |
|---|---|---|
| Yellowstone | — | 15 |
| Cascade | — | 4 |
| Flathead | — | 5 |
| Missoula | — | 4 |
| Gallatin | — | 4 |
| Lewis And Clark | — | 3 |
| Silver Bow | — | 4 |
| Jefferson | — | 3 |
| Stillwater | — | 3 |
| Deer Lodge | — | 2 |
| Lincoln | — | 1 |
| Big Horn | — | 2 |
| Broadwater | — | 2 |
| Custer | — | 2 |
| Ravalli | — | 2 |
| Rosebud | — | 2 |
| Toole | — | 2 |
| Cascade, Judith Basin | — | 0 |
| Dawson | — | 1 |
| Deer Lodge, Silver Bow | — | 0 |
Showing top 20 counties by environmental activity. Montana has 26 counties total.
Largest Cities
Big Timber
Pop: —
1 facilities · 2 water systems
Columbus
Pop: —
2 facilities · 4 water systems
Decker
Pop: —
1 facilities · 0 water systems
Hardin
Pop: —
1 facilities · 2 water systems
Laurel
Pop: —
3 facilities · 5 water systems
Nye
Pop: —
1 facilities · 0 water systems
Billings
Pop: —
12 facilities · 38 water systems
Raymond
Pop: —
1 facilities · 0 water systems
Sidney
Pop: —
1 facilities · 3 water systems
Miles City
Pop: —
2 facilities · 5 water systems
Colstrip
Pop: —
2 facilities · 1 water systems
Glendive
Pop: —
1 facilities · 5 water systems
Malmstrom Afb
Pop: —
1 facilities · 0 water systems
Great Falls
Pop: —
2 facilities · 18 water systems
Babb
Pop: —
1 facilities · 0 water systems
Shelby
Pop: —
1 facilities · 3 water systems
Sun River
Pop: —
1 facilities · 1 water systems
Sweetgrass
Pop: —
1 facilities · 0 water systems
Helena
Pop: —
1 facilities · 38 water systems
Clancy
Pop: —
2 facilities · 9 water systems
About This Data
This page aggregates environmental data from three EPA programs for Montana: the Toxic Release Inventory (TRI) for industrial chemical releases, the Safe Drinking Water Information System (SDWIS) for water quality, and the Superfund National Priorities List (NPL) for hazardous waste cleanup sites.
PlainEnviro presents this data without advocacy framing. Numbers reflect reported data and may not capture all environmental activity. For specific health or environmental concerns, contact your state environmental agency.