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Montana NPL Sites


Eco-USA: NPL Sites: Montana

Note: About NPL Site Links


Active Sites

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ACM Smelter and Refinery

Location: Black Eagle/Great Falls, Cascade County

Contaminants: Antimony · Arsenic · Cadmium · Chromium · Cobalt · Copper · Lead · Manganese · Mercury · Nickel · Selenium · Silver · Zinc


Anaconda Aluminum Co. Columbia Falls Reduction Plant

Location: Columbia Falls, Flathead County

Contaminants: Arsenic · Chromium · Cyanide · Fluoride · Lead · Selenium


Anaconda Smelter

Location: Anaconda, Deer Lodge County

Contaminants: Arsenic · Beryllium · Cadmium · Copper · Lead · Zinc


Barker Hughesville Mining District

Location: Cascade and Judith Basin Counties

Contaminants: Arsenic · Zinc


Basin Mining Area

Location: Basin, Jefferson County

Contaminants: Arsenic · Cadmium · Copper · Lead


Carpenter-Snow Creek Mining District

Location: Cascade County

Contaminants: Arsenic · Lead


East Helena

Location: East Helena, Lewis and Clark County

Contaminants: Arsenic · Heavy Metals · Lead


Flat Creek IMM

Location: Superior, Mineral County

Contaminants: Antimony · Arsenic · Lead · Manganese


Idaho Pole

Location: Bozeman, Gallatin County

Contaminants: Dioxins · PAHs · Pentachlorophenol


Libby Asbestos

Location: Libby, Lincoln County

Contaminants: Asbestos


Libby Groundwater

Location: Libby, Lincoln County

Contaminants: Dioxins · Heavy Metals · PAHs · Pentachlorophenol


Lockwood Solvent Groundwater Plume

Location: Billings, Yellowstone County

Contaminants: Carbon Tetrachloride · cis-1,2-Dichloroethene · Tetrachloroethene · Trichloroethene · Vinyl Chloride


Milltown Reservoir Sediments / Clark Fork River

Location: Milltown, Missoula County

Contaminants: Arsenic · Copper


Montana Pole and Treating

Location: Butte, Silver Bow County

Contaminants: Dioxins · Furans · Metals · Pentachlorophenol · VOCs


Mouat Industries

Location: Columbus, Stillwater County

Contaminants: Chromium


Silver Bow Creek/Butte Area

Location: Butte, Jefferson County

Contaminants: Arsenic · Cadmium · Copper · Lead · Zinc


Upper Tenmile Creek Mining Area

Location: Near Helena, Lewis and Clark County

Contaminants: Arsenic · Copper · Lead · Zinc


Deleted Sites

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