UST Check → counties → South Dakota → Lyman
Underground storage tanks & leak sites in Lyman 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.
41registered tank facilities
37open tanks
95closed tanks
51leak incidents on record
2cleanups still open
2 leak cleanups in
Lyman 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 |
|---|---|---|---|---|
| OASIS PUMP N PACK | OACOMA | 5 / 7 | Open UST(s) | SD45-00016 |
| THE PRAIRIE POST | PRESHO | 5 / 5 | Open UST(s) | SD45-00023 |
| PRESHO OIL | PRESHO | 5 / 3 | Open UST(s) | SD45-00009 |
| WEST FORTY INC | OACOMA | 5 / 0 | Open UST(s) | SD45-00026 |
| CLARK | KENNEBEC | 4 / 3 | Open UST(s) | SD45-00015 |
| BURKE OIL SHELL STATION | OACOMA | 4 / 0 | Open UST(s) | SD45-00028 |
| KUL WISCASA OYATE | LOWER BRULE | 3 / 0 | Open UST(s) | SD45-00035 |
| Kul Wicasa Oyate Trading Post | Lower Brule | 3 / 0 | Open UST(s) | 4060008 |
Open leak cleanups — most recently reported
| Site | City | Reported | Substance | EPA record |
|---|---|---|---|---|
| ATP - Farmers Union Oil Site | Presho | 2013-10-24 | Gasoline | SD2013.253 |
| Halverson Oil Company - UST Removal | Kennebec | 1993-09-22 | Gasoline | SD93.303 |
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 41 registered facilities has an unknown number of unregistered ones.
- Open cleanups are the headline. 2 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