UST Check → counties → Illinois → McHenry
Underground storage tanks & leak sites in McHenry 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.
536registered tank facilities
349open tanks
1,177closed tanks
338leak incidents on record
68cleanups still open
68 leak cleanups in
McHenry 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 |
|---|---|---|---|---|
| R.S. 2010 Properties Co. | McHenry | 6 / 0 | Open UST(s) | IL2016444 |
| Algonquin Gas & Food | Algonquin | 5 / 6 | Open UST(s) | IL2015082 |
| Thornton's #115 | Cary | 5 / 5 | Open UST(s) | IL2031790 |
| Crystal Lake Mobil Mart, Inc. | Crystal Lake | 5 / 3 | Open UST(s) | IL2015079 |
| Thorton's #119 | Lake in the Hills | 5 / 0 | Open UST(s) | IL2034070 |
| Speedway #5004 | Lake in the Hills | 5 / 0 | Open UST(s) | IL2046452 |
| Lakemoor Citgo | Lakemoor | 5 / 0 | Open UST(s) | IL2020647 |
| KR Convenience, Inc. | Woodstock | 5 / 0 | Open UST(s) | IL2017114 |
Open leak cleanups — most recently reported
| Site | City | Reported | Substance | EPA record |
|---|---|---|---|---|
| Megha Food Corporation | Lake in the Hills | 2018-10-03 | Gasoline Diesel | IL1110405053_20180926 |
| Arrow Road Construction Company | Algonquin | 2018-10-03 | Gasoline Diesel | IL1114055079_20180923 |
| Hainsville Properties, LLC | McHenry | 2018-09-26 | — | IL1110605283_20180897 |
| Harvard BP Real Estate, LLC | Harvard | 2016-11-29 | Gasoline Diesel UsedOil | IL1110255037_20161112 |
| Kristensen Service Center, Inc. | Woodstock | 2016-09-20 | Gasoline Diesel | IL1110955066_20160866 |
| BAPA, LLC & PT, LLC | McHenry | 2015-04-07 | Gasoline Diesel | IL1110605112_20150372 |
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 536 registered facilities has an unknown number of unregistered ones.
- Open cleanups are the headline. 68 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