UST Check → counties → Maryland → Montgomery
Underground storage tanks & leak sites in Montgomery County, MD
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.
1,238registered tank facilities
931open tanks
3,642closed tanks
1,624leak incidents on record
6cleanups still open
6 leak cleanups in
Montgomery 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 |
|---|---|---|---|---|
| Amato Industries, Inc./Amchlor | Silver Spring | 16 / 0 | Open UST(s) | MD95 |
| National Institutes of Health | Bethesda | 14 / 14 | Open UST(s) | MD8601 |
| Equipment and Maintenance Operations Center | Rockville | 11 / 0 | Open UST(s) | MD20318 |
| Francis O. Day Co., Inc. | Rockville | 7 / 13 | Open UST(s) | MD6156 |
| Montgomery Bus Division | Rockville | 7 / 11 | Open UST(s) | MD10504 |
| Damascus Fuel Co., Inc. | Damascus | 6 / 6 | Open UST(s) | MD3670 |
| PMG CO 29 | Germantown | 5 / 8 | Open UST(s) | MD4946 |
| Lyttonsville WSSC | Silver Spring | 5 / 7 | Open UST(s) | MD11255 |
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 1,238 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