# US GYPSUM CO, EAST CHICAGO IN: EPA ECHO compliance status: Significant Violation

**Remediation Urgency Score:** 53/100

| Field | Value |
|---|---|
| Facility | US GYPSUM CO |
| EPA Registry ID | 110003086320 |
| Address | 301 RILEY RD, EAST CHICAGO, IN, 46312 |
| County | LAKE |
| Industry (NAICS) | 327420: Gypsum Product Manufacturing |
| SIC | 2851: Paints And Allied Products, 3275: Gypsum Products |
| Overall compliance status | Significant Violation |
| Significant noncomplier | Yes |
| Quarters in noncompliance (last 12) | 5 |
| Clean Water Act | No Violation Identified |
| Clean Air Act | Violation Unaddressed; State Has Lead Enforcement |
| RCRA | No Violation Identified |
| Formal enforcement actions (5 years) | 0 |
| Total penalties | $0 |
| Last penalty | 09/04/2020 |
| Inspections (5 years) | 2 |
| Last inspection | 2025-03-12 |
| Watershed | Little Calumet-Galien |

## Why this score
- Flagged as a significant noncomplier, the highest EPA priority tier.
- 5 of the last 12 quarters in noncompliance.
- Current violation under CAA.

Source: U.S. EPA ECHO (Enforcement and Compliance History Online) (https://echo.epa.gov/detailed-facility-report?fid=110003086320). Last refreshed: 2026-11-04T18:09:33.420Z.
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.