UST Check → counties → Montana → Lake
Underground storage tanks & leak sites in Lake 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.
224registered tank facilities
152open tanks
586closed tanks
200leak incidents on record
36cleanups still open
36 leak cleanups in
Lake 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 (Polson) | Polson | 8 / 7 | Open UST(s) | 2030006 |
| TOWN PUMP INC POLSON | POLSON | 8 / 5 | Open UST(s) | MT2408717 |
| JOHNS FUEL FARM & ENERGY | RONAN | 6 / 5 | Open UST(s) | MT2407437 |
| John's Fuel Farm Inc. | Ronan | 6 / 5 | Open UST(s) | 2030092 |
| MOUNTAIN WEST CO OP RONAN | RONAN | 5 / 8 | Open UST(s) | MT2404530 |
| MOUNTAIN WEST CO-OP/CENEX /HARVEST STATES | Ronan | 5 / 8 | Open UST(s) | 2030008 |
| TOWN PUMP INC RONAN | RONAN | 5 / 0 | Open UST(s) | MT2408718 |
| Town Pump (Ronan) | Ronan | 5 / 0 | Open UST(s) | 2030040 |
Open leak cleanups — most recently reported
| Site | City | Reported | Substance | EPA record |
|---|---|---|---|---|
| Town Pump (Ronan) | Ronan | 2024-09-17 | Diesel | Diesel #2 Line Puncture |
| Coulter Automotive | Charlo | 2022-10-24 | Gasoline (containing <=10% ethanol) | October 2022 Release |
| Stuart's Service Center | Saint Ignatius | 2022-08-27 | — | August 2022 Release |
| Mountain View Cenex (fka Stuart's Service Center) | Saint Ignatius | 2022-08-27 | Unknown Petroleum | Aug 2022 Release |
| Dyno Mart | Ronan | 2021-07-13 | — | July 2021 release |
| Kicking Horse Job Corps Center | Ronan | 2021-04-29 | Unknown Petroleum | May 2021 Release |
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 224 registered facilities has an unknown number of unregistered ones.
- Open cleanups are the headline. 36 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