UST Check → counties → Illinois → Mercer
Underground storage tanks & leak sites in Mercer 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.
92registered tank facilities
42open tanks
175closed tanks
36leak incidents on record
19cleanups still open
19 leak cleanups in
Mercer 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 |
|---|---|---|---|---|
| Gold Star FS, Inc. | Aledo | 10 / 0 | Open UST(s) | IL3044472 |
| Circle K #1222 | Aledo | 5 / 4 | Open UST(s) | IL3006074 |
| Blick & Blick Oil, Inc. | Aledo | 5 / 3 | Open UST(s) | IL3000811 |
| Casey's General Store #2674 | Viola | 3 / 2 | Open UST(s) | IL3000619 |
| 7-Eleven Store #34469 | Sherrard | 3 / 0 | Open UST(s) | IL3032913 |
| Singh & Kaur, LLC d/b/a Aledo Mart | Aledo | 3 / 0 | Open UST(s) | IL3034023 |
| Casey's General Store #2658 | Aledo | 2 / 2 | Open UST(s) | IL3006496 |
| Casey's General Store #1067 | Keithsburg | 2 / 0 | Open UST(s) | IL3017928 |
Open leak cleanups — most recently reported
| Site | City | Reported | Substance | EPA record |
|---|---|---|---|---|
| Blick & Blick Oil, Inc. | Aledo | 2018-07-30 | Gasoline | IL1310055016_20180709 |
| Gold Star FS, Inc. | Aledo | 2017-04-14 | Unleaded Diesel | IL1310055010_20170287 |
| Smith, Robert | North Henderson | 2011-10-11 | Gasoline | IL1310305003_20111093 |
| Casey's General Stores | Viola | 2007-12-20 | Gasoline | IL1310455014_20071646 |
| Valar Enterprises, Inc. | Viola | 2007-07-23 | Gasoline | IL1310455014_20071001 |
| Ayers, Ronald | Sherrard | 2004-08-17 | Gasoline | IL1310405001_20041151 |
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 92 registered facilities has an unknown number of unregistered ones.
- Open cleanups are the headline. 19 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