UST Check → counties → Illinois → Grundy
Underground storage tanks & leak sites in Grundy 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.
143registered tank facilities
122open tanks
297closed tanks
96leak incidents on record
28cleanups still open
28 leak cleanups in
Grundy 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 |
|---|---|---|---|---|
| Morris Travel Center | Morris | 8 / 10 | Open UST(s) | IL2018605 |
| Pilot Travel Center #236 | Minooka | 7 / 4 | Open UST(s) | IL2036850 |
| Diamond Minit Mart #610 | Diamond | 6 / 1 | Open UST(s) | IL2043134 |
| Pilot Travel Center #483 | Morris | 6 / 0 | Open UST(s) | IL2045340 |
| Washington St. Citgo / Washington St. Citgo | Morris | 5 / 6 | Open UST(s) | IL2019253 |
| Circle K #1446 | Morris | 5 / 4 | Open UST(s) | IL2007128 |
| Morris South Minit Mart #636 | Morris | 4 / 4 | Open UST(s) | IL2011882 |
| Mazon Minit Mart #637 | Mazon | 4 / 1 | Open UST(s) | IL2024488 |
Open leak cleanups — most recently reported
| Site | City | Reported | Substance | EPA record |
|---|---|---|---|---|
| DeLong Company, Inc. | Minooka | 2018-10-11 | Diesel | IL634555015_20180954 |
| Morris Fuel | Morris | 2017-06-20 | Gasoline | IL630605068_20170528 |
| TA Operating, LLC | Coal City | 2017-05-25 | Gasoline | IL630205010_20170441 |
| Circle K/Mac's Convenience Stores, LLC | Coal City | 2016-10-04 | — | IL630205021_20160913 |
| Travel Centers of America #236 | Morris | 2011-10-28 | Unleaded | IL630600029_20111157 |
| Travel Centers of America | Morris | 2010-11-02 | Diesel | IL630600029_20101201 |
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 143 registered facilities has an unknown number of unregistered ones.
- Open cleanups are the headline. 28 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