UST Check → counties → South Dakota → Harding
Underground storage tanks & leak sites in Harding County, SD
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.
14registered tank facilities
11open tanks
36closed tanks
14leak incidents on record
1cleanups still open
1 leak cleanup in
Harding County is 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 |
|---|---|---|---|---|
| HENDERSON OIL CO INC | BUFFALO | 5 / 0 | Open UST(s) | SD35-00004 |
| FARMERS UNION OIL CO | BUFFALO | 4 / 3 | Open UST(s) | SD35-00002 |
| SD DEPT OF TRANSPORTATION | BUFFALO | 2 / 4 | Open UST(s) | SD35-00001 |
| S.D.D.O.T. | BUFFALO | 0 / 4 | Closed UST(s) | SD35-00020 |
| COFFIED MOTORS & OIL CO | BUFFALO | 0 / 4 | Closed UST(s) | SD35-00019 |
| KOCH EXPLORATION CO | BUFFALO | 0 / 3 | Closed UST(s) | SD35-00009 |
| REDIG POST OFFICE-STORE | REDIG | 0 / 3 | Closed UST(s) | SD35-00003 |
| REVA STORE | REVA | 0 / 3 | Closed UST(s) | SD35-00007 |
Open leak cleanups — most recently reported
| Site | City | Reported | Substance | EPA record |
|---|---|---|---|---|
| Harding County Airport | Buffalo | 1996-05-21 | Aviation Fuel - 87 or 1 octane | SD96.143 |
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 14 registered facilities has an unknown number of unregistered ones.
- Open cleanups are the headline. 1 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