UST Check → counties → Colorado → San Juan
Underground storage tanks & leak sites in San Juan County, CO
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.
11registered tank facilities
3open tanks
28closed tanks
7leak incidents on record
—cleanups still open
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 |
|---|---|---|---|---|
| San Juan Services | Silverton | 2 / 3 | Open UST(s) | CO4047 |
| Triangle Motel | Silverton | 1 / 4 | Open UST(s) | CO4081 |
| CDOT Silverton | Silverton | 0 / 3 | Closed UST(s) | CO7526 |
| San Juan County Garage & Shop | Silverton | 0 / 3 | Closed UST(s) | CO4578 |
| CDOT Cascade Silverton | Silverton | 0 / 2 | Closed UST(s) | CO7488 |
| CDOT Cascade | Silverton | 0 / 2 | Closed UST(s) | CO5591 |
| Town Of Silverton | Silverton | 0 / 2 | Closed UST(s) | CO7655 |
| Carriage House Public Works | Silverton | 0 / 2 | Closed UST(s) | CO3918 |
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 11 registered facilities has an unknown number of unregistered ones.
- Open cleanups are the headline. Where a cleanup is 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