UST Check → counties → Michigan → Mason
Underground storage tanks & leak sites in Mason County, MI
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.
159registered tank facilities
54open tanks
388closed tanks
107leak incidents on record
48cleanups still open
48 leak cleanups in
Mason 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 |
|---|---|---|---|---|
| Scottville EZ Mart | SCOTTVILLE | 4 / 1 | Open UST(s) | MI19260 |
| Airport EZ Mart | LUDINGTON | 4 / 0 | Open UST(s) | MI3458 |
| Wesco #25 | LUDINGTON | 3 / 8 | Open UST(s) | MI15960 |
| Ludington EZ Mart | LUDINGTON | 3 / 7 | Open UST(s) | MI11156 |
| Mason County Road Commission | SCOTTVILLE | 3 / 6 | Open UST(s) | MI15050 |
| State Street EZ Mart | SCOTTVILLE | 3 / 4 | Open UST(s) | MI19156 |
| Admiral Petroleum #91 | SCOTTVILLE | 3 / 4 | Open UST(s) | MI17016 |
| Daniel F Kalis | CUSTER | 3 / 0 | Open UST(s) | MI37532 |
Open leak cleanups — most recently reported
| Site | City | Reported | Substance | EPA record |
|---|---|---|---|---|
| Parkview Service Center | Ludington | 2017-02-07 | Used Oil | MIC-0042-17 |
| Parkview Service Center | Ludington | 2015-12-17 | Gasoline,Gasoline | MIC-0215-15 |
| Wiley Store | Scottville | 2015-01-08 | Gasoline | MIC-0001-15 |
| Wesco #23 | Ludington | 2007-12-04 | Gasoline | MIC-0279-07 |
| Former Phillips 66 (aka Former Kent Optical) | Ludington | 2007-05-15 | Unknown | MIC-0122-07 |
| Second Street Row | Scottville | 2006-08-16 | Other | MIC-0222-06 |
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 159 registered facilities has an unknown number of unregistered ones.
- Open cleanups are the headline. 48 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