UST Check → counties → Ohio → Williams
Underground storage tanks & leak sites in Williams County, OH
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.
121registered tank facilities
113open tanks
256closed tanks
161leak incidents on record
11cleanups still open
11 leak cleanups in
Williams 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 |
|---|---|---|---|---|
| INDIAN MEADOW SERVICE PLAZA | WEST UNITY | 6 / 7 | Open UST(s) | OH86000135 |
| TIFFIN RIVER SERVICE PLAZA | WEST UNITY | 6 / 7 | Open UST(s) | OH86000137 |
| BRYAN FUEL STOP | BRYAN | 5 / 0 | Open UST(s) | OH86000195 |
| BRYAN MARATHON | BRYAN | 5 / 0 | Open UST(s) | OH86000151 |
| SLATTERY MARATHON SERVICE | EDON | 4 / 4 | Open UST(s) | OH86002658 |
| FARMERS EDGE | EDGERTON | 4 / 3 | Open UST(s) | OH86008098 |
| SLATTERY OIL CO. INC. | MONTPELIER | 4 / 3 | Open UST(s) | OH86002519 |
| Circle K 5633 | MONTPELIER | 4 / 1 | Open UST(s) | OH86006975 |
Open leak cleanups — most recently reported
| Site | City | Reported | Substance | EPA record |
|---|---|---|---|---|
| WILLIAMS LAND BANK | BRYAN | 2017-12-07 | — | OH86000201-N00003 |
| CERTIFIED OIL CO. #315 | MONTPELIER | 2017-10-26 | — | OH86000118-N00002 |
| HIGH STREET GAS MART INC | BRYAN | 2013-01-17 | — | OH86005042-N00001 |
| UNITY MAIN STOP | WEST UNITY | 2011-07-12 | — | OH86000100-N00001 |
| THE BIG THREE | BLAKESLEE | 2009-03-04 | — | OH86002251-N00001 |
| WILLIAMS LAND BANK | BRYAN | 2008-09-12 | — | OH86000201-N00002 |
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 121 registered facilities has an unknown number of unregistered ones.
- Open cleanups are the headline. 11 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