UST Check → counties → Illinois → Tazewell
Underground storage tanks & leak sites in Tazewell 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.
424registered tank facilities
306open tanks
917closed tanks
227leak incidents on record
47cleanups still open
47 leak cleanups in
Tazewell 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 |
|---|---|---|---|---|
| Tremont Oil Company | Tremont | 11 / 1 | Open UST(s) | IL3001237 |
| Peoria Proving Grounds | Washington | 7 / 4 | Open UST(s) | IL3000178 |
| Thornton Oil #351 | East Peoria | 6 / 7 | Open UST(s) | IL3025265 |
| Caterpillar Tractor Co | East Peoria | 6 / 5 | Open UST(s) | IL3011822 |
| Thornton Oil #352 | East Peoria | 6 / 0 | Open UST(s) | IL3026385 |
| Illinois Central College | East Peoria | 5 / 5 | Open UST(s) | IL3013097 |
| Bhalla Oil Company | Delavan | 5 / 0 | Open UST(s) | IL3007212 |
| Thorntons #350 | Creve Coeur | 5 / 0 | Open UST(s) | IL3037329 |
Open leak cleanups — most recently reported
| Site | City | Reported | Substance | EPA record |
|---|---|---|---|---|
| Freedom Oil Company | Pekin | 2018-09-24 | FuelOil | IL1794735090_20180890 |
| River City Oil, LLC | Groveland | 2018-08-02 | Gasoline Diesel | IL1798075078_20180722 |
| Niksa Oil, Inc. | Pekin | 2018-01-10 | Unleaded | IL1790605038_20180037 |
| Caseys Retail Store # 3497 | South Pekin | 2016-03-24 | FuelOil | IL1790655009_20160244 |
| Premcor Refining Group Inc. | East Peoria | 2015-03-24 | Gasoline Diesel | IL1790205055_20150313 |
| Uselton Oil Company | Pekin | 2014-10-23 | Gasoline | IL1794735169_20141210 |
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 424 registered facilities has an unknown number of unregistered ones.
- Open cleanups are the headline. 47 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