US Steel Mon Valley Works - Clairton Plant
400 State St, Clairton, PA 15025, Allegheny County
A manufacturing facility in Clairton, Pennsylvania, listed in EPA records under all other petroleum and coal products manufacturing (NAICS 324199) and also iron and steel mills and ferroalloy manufacturing and iron and steel pipe and tube manufacturing from purchased steel. It is one of 5,394 active manufacturing facilities in EPA records in Pennsylvania.
- Industry
- Petroleum and coal products
- NAICS 324
- TRI reporter
- Yes
- Inspections, 5 yr
- 11
- EPA registry ID
- 110042043384
- Revised
- November 1, 2026
What's made here
- All Other Petroleum and Coal Products Manufacturing (NAICS 324199)
- Iron and Steel Mills and Ferroalloy Manufacturing (NAICS 331110)
- Iron and Steel Pipe and Tube Manufacturing from Purchased Steel (NAICS 331210)
Public EPA records
| Toxics Release Inventory | Reports to the TRI (facility ID 15025SSCLR400ST). |
|---|---|
| Clean Air Act | Listed as a major source of air emissions. |
| Clean Water Act | Major and non-major water discharge permits (NPDES). |
| Hazardous waste (RCRA) | Listed as a large quantity generator of hazardous waste (1,000 kg or more a month). |
| Greenhouse gas reporting | Reports to the Greenhouse Gas Reporting Program. |
| Inspections | 11 in the last five years; most recent March 16, 2026. |
EPA ECHO, November 1, 2026; not a rating. EPA report ยท About these records