UST Check → counties → Washington → San Juan
Underground storage tanks & leak sites in San Juan County, WA
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.
53registered tank facilities
49open tanks
99closed tanks
9leak incidents on record
9cleanups still open
9 leak cleanups in
San Juan 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 |
|---|---|---|---|---|
| ISLAND PETROLEUM SERVICES | Friday Harbor | 9 / 0 | Open UST(s) | WA59654195 |
| INTER-ISLAND PETROLEUM, INC. | Eastsound | 5 / 0 | Open UST(s) | WA62459462 |
| THE SOUTH END GENERAL STORE | Lopez Island | 4 / 3 | Open UST(s) | WA26543325 |
| PORT OF FRIDAY HARBOR | Friday Harbor | 4 / 2 | Open UST(s) | WA53493692 |
| PETRO SAN JUAN | Friday Harbor | 4 / 1 | Open UST(s) | WA33121331 |
| PETRO SAN JUAN | Friday Harbor | 3 / 1 | Open UST(s) | WA7271133 |
| CRESCENT BEACH SERVICE | Eastsound | 2 / 4 | Open UST(s) | WA85629565 |
| ROCHE HARBOR RESORT | Roche Harbor | 2 / 2 | Open UST(s) | WA55551832 |
Open leak cleanups — most recently reported
| Site | City | Reported | Substance | EPA record |
|---|---|---|---|---|
| SAN JUAN PUBLIC WORKS | EASTSOUND | not reported | Benzene | WA7837 |
| San Juan Marina Friday Harbor | FRIDAY HARBOR | not reported | Petroleum-Other | WA9595 |
| Islander Lopez Resort | LOPEZ ISLAND | not reported | Petroleum-Other | WA8886 |
| San Juan Grange 699 | FRIDAY HARBOR | not reported | Benzene | WA10669 |
| SAN JUAN COUNTY PUBLIC WORKS DEPT | FRIDAY HARBOR | not reported | Petroleum-Diesel | WA2811 |
| BFO INC | FRIDAY HARBOR | not reported | Benzene | WA9847 |
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 53 registered facilities has an unknown number of unregistered ones.
- Open cleanups are the headline. 9 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