UST Check → counties → South Dakota → Lake
Underground storage tanks & leak sites in Lake 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.
54registered tank facilities
33open tanks
108closed tanks
75leak incidents on record
7cleanups still open
7 leak cleanups in
Lake 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 |
|---|---|---|---|---|
| GEHL CO | MADISON | 5 / 3 | Open UST(s) | SD43-00016 |
| CLASSIC CORNER CONVENIENCE | MADISON | 5 / 0 | Open UST(s) | SD43-00062 |
| MADISON DISC LIQUOR & AMOCO | MADISON | 3 / 3 | Open UST(s) | SD43-00010 |
| SD DEPT OF TRANSPORTATION | MADISON | 3 / 2 | Open UST(s) | SD43-00012 |
| THE ONE STOP | MADISON | 3 / 0 | Open UST(s) | SD43-00020 |
| F & M CO-OP OIL | MADISON | 3 / 0 | Open UST(s) | SD43-00052 |
| SCOOBY | MADISON | 2 / 4 | Open UST(s) | SD43-00028 |
| ROADSIDE C STORE | CHESTER | 2 / 0 | Open UST(s) | SD43-00019 |
Open leak cleanups — most recently reported
| Site | City | Reported | Substance | EPA record |
|---|---|---|---|---|
| DeCurtins Service (formerly ATP) | Ramona | 2001-11-29 | Petroleum | SD2001.701 |
| Former Nunda Propane - Tank Removal | Nunda | 1999-04-27 | Petroleum | SD99.14 |
| Former Hardees / Station Site | Madison | 1996-04-12 | Gasoline | SD96.086 |
| Lake Herman State Park (SD GF&P) | Madison | 1991-12-11 | Petroleum | SD91.563 |
| Former Standard Station | Wentworth | 1991-08-27 | Petroleum | SD91.387 |
| Olson Oil Company | Madison | 1991-01-15 | Gasoline | SD91.019 |
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 54 registered facilities has an unknown number of unregistered ones.
- Open cleanups are the headline. 7 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