UST Check → counties → Illinois → Boone
Underground storage tanks & leak sites in Boone County, IL
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.
101registered tank facilities
88open tanks
242closed tanks
83leak incidents on record
23cleanups still open
23 leak cleanups in
Boone 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 |
|---|---|---|---|---|
| Belvidere Assembly Plant | Belvidere | 8 / 12 | Open UST(s) | IL1020028 |
| Fas Mart #5206 | Belvidere | 6 / 0 | Open UST(s) | IL1035698 |
| Speedway #3995 | Belvidere | 6 / 0 | Open UST(s) | IL1046211 |
| 7-Eleven Store # 34713 | Belvidere | 4 / 7 | Open UST(s) | IL1024190 |
| 7-Eleven #34712 | Belvidere | 4 / 6 | Open UST(s) | IL1034505 |
| Safal Oil & Liquor, Inc. | Belvidere | 4 / 5 | Open UST(s) | IL1022404 |
| Circle K #58 | Belvidere | 4 / 1 | Open UST(s) | IL1022868 |
| Belvidere Mobil Mart | Belvidere | 4 / 0 | Open UST(s) | IL1034915 |
Open leak cleanups — most recently reported
| Site | City | Reported | Substance | EPA record |
|---|---|---|---|---|
| Rockford Oil Company | Belvidere | 2005-10-03 | Gasoline | IL70057104_20051381 |
| Rockford Oil Company, Inc. | Belvidere | 2005-02-18 | Gasoline | IL70057104_20050261 |
| Kearney, Tom | Garden Prairie | 2003-05-09 | Diesel | IL78995013_20030683 |
| Kearney Kountry Store | Garden Prairie | 1999-06-25 | Gasoline | IL78995013_991548 |
| Speedway, LLC #7132 | Belvidere | 1998-07-07 | Gasoline | IL70055051_981639 |
| Caledonia Hwy. Commision | Caledonia | 1998-06-02 | Gasoline Diesel | IL78035007_981301 |
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 101 registered facilities has an unknown number of unregistered ones.
- Open cleanups are the headline. 23 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