# Superfund Sites in Montana: All 18 on a Map (List + Data) | InstaMaps

> Montana has 18 Superfund sites (1.4% of the US), #23 by count and #3 per person. From EPA National Priorities List. Map to embed, CSV download.

Source: https://get-instamaps.com/rankings/superfund-sites/montana

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# Superfund Sites in Montana

Montana has **18 Superfund sites**: 1.4% of the US total of 1,316\. That ranks **#23 by count** and **#3 per person** (1.58 per 100,000 residents) of 51.

## Key takeaways

* Montana has 18 Superfund sites, 1.4% of the US total of 1,316.
* That ranks #23 of 51 by count and #3 per person (1.58 per 100,000 residents).
* New Jersey has the most, with 115.
* Source: EPA National Priorities List, September 2026.

#3

national rank (per capita)

18

Superfund sites

1.58

per 100k residents

## The data

Source: [EPA National Priorities List](https://www.epa.gov/superfund), September 2026\. Every National Priorities List site in the 50 states and DC, at the EPA’s coordinates. Sites in the territories are left out.

Licence: U.S. government data: no copyright, free to reuse

[Montana: 18 rows (CSV)](/downloads/superfund-sites/montana.csv)[All of the US (CSV)](/downloads/superfund-sites/us.csv)

## Put this map on your website — free

Local blogs, news sites, parks pages: embed the live interactive map with one snippet. Attribution stays on, that's the whole deal.

`<iframe src="https://get-instamaps.com/embed/rankings/superfund-sites/montana" width="100%" height="440" style="border:2px solid #111" loading="lazy" title="Montana superfund sites map — InstaMaps"></iframe>`

## All 18 Superfund sites in Montana

| #  | Name                                                |
| -- | --------------------------------------------------- |
| 1  | ACM Smelter and Refinery                            |
| 2  | Anaconda Aluminum Co Columbia Falls Reduction Plant |
| 3  | Anaconda Co. Smelter                                |
| 4  | Barker Hughesville Mining District                  |
| 5  | Basin Mining Area                                   |
| 6  | Billings PCE                                        |
| 7  | Carpenter Snow Creek Mining District                |
| 8  | East Helena Site                                    |
| 9  | Flat Creek IMM                                      |
| 10 | Idaho Pole Co.                                      |
| 11 | Libby Asbestos                                      |
| 12 | Libby Ground Water Contamination                    |
| 13 | Lockwood Solvent Ground Water Plume                 |
| 14 | Milltown Reservoir Sediments                        |
| 15 | Montana Pole and Treating                           |
| 16 | Mouat Industries                                    |
| 17 | Silver Bow Creek/Butte Area                         |
| 18 | Upper Tenmile Creek Mining Area                     |

Names as the source gives them. Coordinates for every one are in the CSV.

## Cite this

"Montana has 18 Superfund sites, #23 in the US by count and #3 per person (EPA National Priorities List, September 2026, mapped by InstaMaps)." Free to quote with a link to this page. Population: US Census 2024 estimates.