# WESTLAKE PETROCHEMICALS LLC, SULPHUR LA: EPA ECHO compliance status: Violation Identified

**Remediation Urgency Score:** 51/100

| Field | Value |
|---|---|
| Facility | WESTLAKE PETROCHEMICALS LLC |
| EPA Registry ID | 110043973509 |
| Address | 900 HIGHWAY 108, SULPHUR, LA, 70665 |
| County | CALCASIEU |
| Industry (NAICS) | 325110: Petrochemical Manufacturing, 325211: Plastics Material and Resin Manufacturing |
| SIC | 2821: Plastics Materials And Resins, 2865: Cyclic Crudes And Intermediates, 2869: Industrial Organic Chemicals |
| Overall compliance status | Violation Identified |
| Significant noncomplier | No |
| Quarters in noncompliance (last 12) | 5 |
| Clean Water Act | Violation Identified |
| Clean Air Act | No Violation Identified |
| RCRA | No Violation Identified |
| Formal enforcement actions (5 years) | 7 |
| Total penalties | $2,278,000 |
| Last penalty | 07/14/2026 |
| Inspections (5 years) | 6 |
| Last inspection | 2026-05-28 |
| Watershed | Lower Calcasieu |

## Why this score
- 5 of the last 12 quarters in noncompliance.
- Current violation under CWA.
- 7 formal enforcement action(s) in 5 years.
- $2,278,000 in penalties: remediation has a clear cost of inaction.
- Inspected within the last year (2026-05-28).

Source: U.S. EPA ECHO (Enforcement and Compliance History Online) (https://echo.epa.gov/detailed-facility-report?fid=110043973509). 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.