UST Check → counties → Colorado → Denver
Underground storage tanks & leak sites in Denver 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.
1,693registered tank facilities
702open tanks
4,094closed tanks
1,472leak incidents on record
63cleanups still open
63 leak cleanups in
Denver 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 |
|---|---|---|---|---|
| CCOD Fleet Maintenance Shop | Denver | 11 / 14 | Open UST(s) | CO8804 |
| DPS Hill Top Fuel Fac | Denver | 9 / 1 | Open UST(s) | CO7513 |
| DPS 8th Ave Bus Fac | Denver | 9 / 0 | Open UST(s) | CO15099 |
| Green Brothers Oil LLC | Denver | 7 / 2 | Open UST(s) | CO1990 |
| RTD Platte | Denver | 6 / 7 | Open UST(s) | CO9505 |
| CDOT | Denver | 6 / 6 | Open UST(s) | CO9116 |
| RTD District Shops | Denver | 6 / 4 | Open UST(s) | CO9502 |
| Denver Central Platte Campus | Denver | 6 / 4 | Open UST(s) | CO4086 |
Open leak cleanups — most recently reported
| Site | City | Reported | Substance | EPA record |
|---|---|---|---|---|
| Siegel Oil Co - Retail & Bulk Tanks | Denver | 2018-09-25 | — | CO13143 |
| CDOT | Denver | 2018-09-14 | — | CO13134 |
| Stinker Store #313 | Denver | 2018-08-29 | — | CO13121 |
| King Soopers Fuel Center #693 | Denver | 2018-06-27 | — | CO13063 |
| Property at 290-300 N Vallejo St | Denver | 2018-05-09 | — | CO13046 |
| Stinker Store #315 | Denver | 2018-04-23 | — | CO13006 |
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 1,693 registered facilities has an unknown number of unregistered ones.
- Open cleanups are the headline. 63 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