UST Check → counties → Montana → Beaverhead
Underground storage tanks & leak sites in Beaverhead County, MT
Every figure below is from EPA UST Finder — the EPA-compiled national registry of state-reported underground storage tanks — county aggregates as published by EPA.
79registered tank facilities
45open tanks
175closed tanks
80leak incidents on record
6cleanups still open
6 leak cleanups in
Beaverhead County are still open — the state has not closed the case.
An open cleanup near a property you're buying or lending on is a findable, checkable fact: it appears in a
per-address screen with distance and the registry record.
Largest registered facilities
By open-tank count, from the facility-level registry. Every fact is attributed to the EPA record (linked ID); something wrong — use the correction path in the footer and we'll fix or remove it promptly.
| Facility | City | Open / closed tanks | Status | EPA record |
|---|---|---|---|---|
| ROCKY MOUNTAIN SUPPLY INC DILLON | DILLON | 10 / 3 | Open UST(s) | MT110034 |
| TOWN PUMP INC DILLON 2 | DILLON | 8 / 1 | Open UST(s) | MT108696 |
| GATEWAY CANYON TRAVEL PLAZA | DILLON | 5 / 0 | Open UST(s) | MT113101 |
| DELL CENTER LLC | DELL | 4 / 3 | Open UST(s) | MT101523 |
| THE MINI INC | DILLON | 3 / 3 | Open UST(s) | MT101215 |
| TOWN PUMP INC DILLON 1 | DILLON | 3 / 3 | Open UST(s) | MT108695 |
| SAFEWAY 1581 DILLON | DILLON | 3 / 0 | Open UST(s) | MT5613989 |
| RALPHS EXXON | LIMA | 2 / 4 | Open UST(s) | MT100671 |
Open leak cleanups — most recently reported
| Site | City | Reported | Substance | EPA record |
|---|---|---|---|---|
| BIG HOLE PETROLEUM INC #4111 | Wisdom | 2002-08-10 | — | MT4125 |
| WISE RIVER CLUB #3576 | Wise River | 1998-11-06 | — | MT3576 |
| GARTH TAYLOR #2167 | Dillon | 1994-04-06 | — | MT2167 |
| ROCKY MOUNTAIN SUPPLY # 5219 | Dillon | 1993-10-05 | — | MT5219 |
| USFWS RED ROCK LAKES NATIONAL REFUGE #2271 | Lima | 1990-07-25 | — | MT2271 |
| USFWS RED ROCK LAKES NATIONAL REFUGE #5146 | Lima | 1990-07-25 | — | MT5146 |
What this means if you're buying or lending here
- "Closed" ≠ clean. A closed tank was taken out of service per the registry — many were closed without soil testing, especially before the late 1990s.
- The registry is incomplete by design. Tanks removed before 1986 and most residential heating-oil tanks were never registered. A county with 79 registered facilities has an unknown number of unregistered ones.
- Open cleanups are the headline. 6 cases in this county are still open; contamination may still be under investigation or remediation — distance from a specific parcel is what matters, and that's a per-address question.
Screen a specific property
This page covers the county. A purchase or loan decision needs the registry around one address: registered tanks at the parcel, every facility within 500 and 1,500 ft, leak cleanups with status and distance — each line cited to the official record.
Screen an address — $49 How it worksThis is a screen of EPA-registered tank and leak records, not an environmental site assessment. State registries are incomplete by design: tanks removed before 1986 and most residential heating-oil tanks were never registered, so a clean screen cannot prove the absence of a tank. "Closed" means a tank was taken out of service per the registry — it does not certify that no contamination remains.
source: EPA UST Finder EPA data vintage 2024-12-04 computed 2026-06-12