# OLIN WINCHESTER LLC, EAST ALTON IL: EPA ECHO compliance status: Violation Identified

**Remediation Urgency Score:** 58/100

| Field | Value |
|---|---|
| Facility | OLIN WINCHESTER LLC |
| EPA Registry ID | 110000438688 |
| Address | 427 N SHAMROCK ST, EAST ALTON, IL, 62024 |
| County | MADISON |
| Industry (NAICS) | 331420: Copper Rolling, Drawing, Extruding, and Alloying, 332994: Small Arms, Ordnance, and Ordnance Accessories Manufacturing |
| SIC | 3341: Secondary Nonferrous Metals, 3351: Copper Rolling And Drawing, 3398: Metal Heat Treating, 3482: Small Arms Ammunition |
| Overall compliance status | Violation Identified |
| Significant noncomplier | No |
| Quarters in noncompliance (last 12) | 6 |
| Clean Water Act | Violation Identified |
| Clean Air Act | No Violation Identified |
| RCRA | Violation |
| Formal enforcement actions (5 years) | 3 |
| Total penalties | $962,985 |
| Last penalty | 06/09/2025 |
| Inspections (5 years) | 5 |
| Last inspection | 2025-07-25 |
| Watershed | Peruque-Piasa |

## Why this score
- 6 of the last 12 quarters in noncompliance.
- Violations under 2 statutes (CWA, RCRA): a multi-media problem.
- 3 formal enforcement action(s) in 5 years.
- $962,985 in penalties: remediation has a clear cost of inaction.

Source: U.S. EPA ECHO (Enforcement and Compliance History Online) (https://echo.epa.gov/detailed-facility-report?fid=110000438688). Last refreshed: 2026-11-03T18:05:36.266Z.
Compliance data comes from EPA ECHO and may lag state records; a violation flag is not a finding of wrongdoing. Informational only; not legal or engineering advice.