UST Check → counties → Montana → Jefferson
Underground storage tanks & leak sites in Jefferson 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.
54registered tank facilities
28open tanks
124closed tanks
60leak incidents on record
7cleanups still open
7 leak cleanups in
Jefferson 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 |
|---|---|---|---|---|
| TOWN PUMP INC WHITEHALL | WHITEHALL | 11 / 0 | Open UST(s) | MT2203645 |
| TOWN PUMP INC BOULDER | BOULDER | 7 / 0 | Open UST(s) | MT2208673 |
| CARDWELL STORE LLC | CARDWELL | 4 / 0 | Open UST(s) | MT2213424 |
| MONTANA CITY STORE LLC | MONTANA CITY | 3 / 4 | Open UST(s) | MT2201822 |
| THE CORNER STORE WHITEHALL | WHITEHALL | 3 / 3 | Open UST(s) | MT2200980 |
| ASH GROVE CEMENT WEST INC | MONTANA CITY | 0 / 6 | Closed UST(s) | MT2202928 |
| GOLDEN SUNLIGHT MINES INC UST | WHITEHALL | 0 / 6 | Closed UST(s) | MT2204689 |
| HARLOWS SCHOOL BUS SERVICE INC BOULDER | BOULDER | 0 / 5 | Open UST(s) | MT2212378 |
Open leak cleanups — most recently reported
| Site | City | Reported | Substance | EPA record |
|---|---|---|---|---|
| GOLDEN SUNLIGHT MINES INC #2171 | Whitehall | 1994-04-06 | — | MT2171 |
| KEOGH RANCH #2065 | Whitehall | 1994-01-11 | — | MT2065 |
| J R CORNER STORE #1984 | Whitehall | 1993-09-28 | — | MT1984 |
| ELSER OIL BULK PLANT #1376 | Whitehall | 1992-09-11 | — | MT1376 |
| FELLS STORE #1104 | Cardwell | 1992-02-25 | — | MT1104 |
| MONTANA CITY STORE LLC #206 | Montana City | 1990-02-20 | — | MT206 |
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 54 registered facilities has an unknown number of unregistered ones.
- Open cleanups are the headline. 7 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