UST Check → counties → Iowa → Madison
Underground storage tanks & leak sites in Madison County, IA
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.
61registered tank facilities
28open tanks
124closed tanks
37leak incidents on record
6cleanups still open
6 leak cleanups in
Madison 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 |
|---|---|---|---|---|
| KUM & GO #246 | Winterset | 5 / 0 | Open UST(s) | IA7320 |
| WIGHT & SHORT SERVICE | Winterset | 3 / 4 | Open UST(s) | IA7626 |
| GIT-N-GO #21 | Winterset | 3 / 0 | Open UST(s) | IA9175 |
| CASEY''S GENERAL STORE 3026 | Saint Charles | 2 / 3 | Open UST(s) | IA6478 |
| CASEY''S GENERAL STORE #100 | Earlham | 2 / 2 | Open UST(s) | IA6861 |
| CASEY''S GENERAL STORE 1062 | Winterset | 2 / 2 | Open UST(s) | IA15999 |
| MADISON COUNTY ROADS DEPT | Winterset | 2 / 2 | Open UST(s) | IA2639 |
| CASEY''S GENERAL STORE 1706 | Winterset | 2 / 2 | Open UST(s) | IA17167 |
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 61 registered facilities has an unknown number of unregistered ones.
- Open cleanups are the headline. 6 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