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Superfund Sites in Montana
19 Superfund sites in 9 cities and 13 counties · Data as of 10/21/2026
Superfund sites on this page
Superfund sites in Montana at a glance
- Montana has 19 Superfund sites, about 0.17 for every 10,000 residents.
- That is about 3.1 times the national rate of 0.05 per 10,000.
- The most common type is Final NPL Site (18, 95%), followed by Proposed NPL Site (1).
- The largest concentrations are in Butte (2), Anaconda-Deer Lodge County (1) and Billings (1).
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All Superfund sites in Montana
19 listed, A to Z
- ACM Smelter and RefineryFinal NPL SiteRiver Road North, 1 Mile E. of 15th St, Black Eagle, MT
- Anaconda Aluminum co Columbia Falls Reduction PlantFinal NPL Site, 14 contaminantsEastern End of Aluminum Drive, Columbia Falls, MT
- Anaconda co. SmelterFinal NPL Site, 7 contaminantsSouthern Deer Lodge Valley and Surrounding Uplands, Anaconda, MT
- Barker Hughesville Mining DistrictFinal NPL SiteForest Service Road 6403, Monarch, MT
- Basin Mining AreaFinal NPL Site, 13 contaminantsNorth of I-15, Basin, MT
- Billings PCEFinal NPL Site3rd Street West and Miles Avenue, Billings, MT
- Carpenter Snow Creek Mining DistrictFinal NPL Site, 2 contaminantsNo Specific Address, Neihart, MT
- East Helena SiteFinal NPL Site, 2 contaminantsS of East Helena, East Helena, MT
- Flat Creek ImmFinal NPL Site, 3 contaminantsFlat Creek Road and Hall Gulch Road, Superior, MT
- Idaho Pole co.Final NPL Site, 9 contaminantsCedar St, Bozeman, MT
- Libby Asbestos SiteFinal NPL Site, 1 contaminant512 California Avenue, Libby, MT
- Libby Ground Water ContaminationFinal NPL Site, 45 contaminants252 Port Blvd., Libby, MT
- Lockwood Solvent Ground Water PlumeFinal NPL Site, 4 contaminantsLockwood Road, Billings, MT
- Milltown Reservoir SedimentsFinal NPL Site, 6 contaminantsAdjacent To SE Side of Twn, Milltown, MT
- Montana Pole and TreatingFinal NPL Site, 33 contaminants202 W Greenwood Avenue, Butte, MT
- Mouat IndustriesFinal NPL SiteAdjacent To Air Strip in Cy, Columbus, MT
- Silver Bow Creek/Butte AreaFinal NPL Site, 12 contaminantsButte To Clark Fork River Headwaters, Butte, MT
- Smurfit-Stone Mill FrenchtownProposed NPL Site14377 Pulp Mill Road, Missoula, MT
- Upper Tenmile Creek Mining AreaFinal NPL Site, 9 contaminantsRimini Road, Helena, MT
Frequently asked questions
- How many Superfund sites are in Montana?
- There are 19 Superfund sites in Montana in our data as of 10/21/2026.
- Which Montana cities have the most Superfund sites?
- Butte (2), Anaconda-Deer Lodge County (1), Billings (1), Black Eagle (1), Bozeman (1).