UST Check → counties → Montana → Chouteau
Underground storage tanks & leak sites in Chouteau 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.
121registered tank facilities
30open tanks
214closed tanks
63leak incidents on record
15cleanups still open
15 leak cleanups in
Chouteau 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 |
|---|---|---|---|---|
| MOUNTAIN VIEW COOP FORT BENTON | FORT BENTON | 11 / 6 | Open UST(s) | MT800005 |
| EZZIES WHOLESALE BIG SANDY | BIG SANDY | 5 / 0 | Open UST(s) | MT800855 |
| JOYCE STORE 1 | FORT BENTON | 3 / 3 | Open UST(s) | MT800093 |
| JOYCE FUEL & FEEDS FORT BENTON | FORT BENTON | 3 / 0 | Open UST(s) | MT5613981 |
| HIGHWOOD SERVICE CENTER UST | HIGHWOOD | 2 / 2 | Open UST(s) | MT812320 |
| COUNTY COURTHOUSE & JAIL | FORT BENTON | 1 / 1 | Open UST(s) | MT805930 |
| MALMSTROM AFB J 3 | CARTER | 1 / 1 | Open UST(s) | MT809076 |
| MALMSTROM AFB J 4 | RURAL LOCATION | 1 / 1 | Open UST(s) | MT809077 |
Open leak cleanups — most recently reported
| Site | City | Reported | Substance | EPA record |
|---|---|---|---|---|
| CARTER BNSF LEASE PROPERTY #4469 | Carter | 2003-08-13 | — | MT4469 |
| LOHSE FLYING SERVICE INC #4055 | Fort Benton | 2001-06-14 | — | MT4055 |
| FOUR WAY FUEL #3780 | Big Sandy | 1999-08-05 | — | MT3780 |
| BOBS EXXON #3659 | Geraldine | 1999-01-14 | — | MT3659 |
| CHOUTEAU COUNTY SHOP #3645 | Fort Benton | 1999-01-14 | — | MT3645 |
| CHOUTEAU COUNTY DIST 1 #2032 | Big Sandy | 1993-12-13 | — | MT2032 |
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 121 registered facilities has an unknown number of unregistered ones.
- Open cleanups are the headline. 15 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