Data / Environmental compliance / Pennsylvania / US Steel Mon Valley Works, Clairton Plant
US Steel Mon Valley Works, Clairton, PA: $10,671,315
Updated November 7, 2026. Source: US EPA, Enforcement and Compliance History Online (ECHO).
EPA's ECHO database records 11 inspections, 7 informal enforcement actions and 11 formal enforcement actions at US Steel Mon Valley Works, Clairton Plant, 400 State St, Clairton, PA 15025, in the five years to November 1, 2026. Penalties total $10,671,315, the latest $7,700 on May 3, 2024. The facility was in significant noncompliance in 12 of the last 12 quarters.
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- Site
- 400 State St, Clairton, PA 15025
- EPA registry ID (FRS)
- 110042043384
- Industry
- 324199 All Other Petroleum and Coal Products Manufacturing; 32512 Industrial Gas Manufacturing; 33111 Iron and Steel Mills and Ferroalloy Manufacturing; 331110 Iron and Steel Mills and Ferroalloy Manufacturing
- County
- Allegheny
- Programs
- Clean Air Act, Clean Water Act, Hazardous waste (RCRA)
- Compliance status
- Significant Violation
- Inspections
- 11, latest March 16, 2026
- Formal actions
- 11, latest May 3, 2024
- Informal actions
- 7, latest June 26, 2026
- Penalties
- $10,671,315 in 9 penalties
- ECHO facility report
- echo.epa.gov
By program
Inspections, enforcement actions and penalties of the last five years in each EPA program that covers the facility, as the program systems record them. Federal case penalties are listed under federal enforcement cases. Quarters count the last 12.
| Program | Inspections | Informal actions | Formal actions | Penalties | Latest penalty | Latest amount | Quarters with violations | Quarters in significant noncompliance | Status |
|---|---|---|---|---|---|---|---|---|---|
| Clean Air Act | 2 | 1 | 8 | $10,622,915 | May 3, 2024 | $7,700 | 12 | 12 | Violation Unaddressed; Local Has Lead Enforcement |
| Clean Water Act | 7 | 6 | 2 | $43,500 | October 11, 2023 | $43,500 | 9 | 2 | Violation Identified |
| Hazardous waste (RCRA) | 2 | 0 | 0 | $0 | $500 | 0 | 0 | No Violation Identified |
Federal enforcement cases
EPA cases that name this facility, newest first. The penalty is the whole case penalty, shared with the other facilities named in the case.
| Case | Case name | Status date | Type | Status | Outcome | Statutes | Case penalty | Facilities in case | Source |
|---|---|---|---|---|---|---|---|---|---|
| 03-2023-0097 | US Steel Corp (US Steel Mon Valley Works Clairton Plant) | October 23, 2023 | Administrative, Formal | Closed | Final Order With Penalty | Clean Water Act | $4,900 | 4 | echo.epa.gov |
EPA inspections and evaluations
Compliance monitoring EPA itself carried out, newest first. State inspections are counted above, with the date of the latest.
| Date | Activity | Type | Law |
|---|---|---|---|
| April 26, 2022 | Inspection/Evaluation | Plan Review, Off-Site | Clean Water Act |
| February 23, 2022 | Inspection/Evaluation | Evaluation | Resource Conservation and Recovery Act |
Also on SpecStream
- Environmental compliance in Petroleum and Coal Products Manufacturing in Pennsylvania
- Environmental compliance in Pennsylvania
Public domain (U.S. government work). Counts and penalties cover the five years to November 1, 2026 as ECHO publishes them in its exporter and case downloads, drawn from EPA's air, water, hazardous waste and drinking water systems and from the states that report to them. Records can be incomplete, late or corrected after this page was read. A federal case penalty that names several facilities is shown on each of them and counted once in industry, state and national totals. Each row links to EPA's own report. A quarter in significant noncompliance is EPA's term for a serious violation status in a program, not a finding of fault beyond that status. This page uses US EPA data and is not endorsed or certified by the US EPA. Free to reuse with credit to SpecStream under CC BY 4.0. Spot a wrong value? Write to [email protected] with the link to this page.