Air Quality Violations at Clairton Coke Works Leads to More Than $359K in Stipulated Penalties for U.S. Steel

Editor’s Note: The Allegheny County Health Department periodically updates its website to include documents related to air quality enforcement actions. As part of our watchdog work, GASP monitors this webpage and reports on the air quality violations posted there.

New documents uploaded this week to the Allegheny County Health Department’s website show that U.S. Steel was issued more than $359,000 in stipulated penalties for air quality violations that occurred at its Clairton Coke Works facility.

The demands - issued Oct. 17, 2025 and Dec. 18, 2025 - called for U.S. Steel to pay $271,775 and $85,775, respectively, and cover violations made in the first and second quarters of 2024 (yes, the violations are from 2024 - and yes, they are the latest such penalties).

The documents show that the lion share of the penalties were for pushing and charging violations.

Interestingly, this isn’t the first time U.S. Steel has been tagged for pushing violations, specifically: ACHD in 2024 issued $2 million in penalties against the company for hundreds of uncontrolled pushes. 

That issue - like so many others related to U.S. Steel enforcement actions - is still winding its way through the appeals process.

GASP continues to follow enforcement issues closely and will keep you updated as more information is posted to ACHD’s enforcement docket.

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