Zip Code 15122
📍 West Mifflin, PA
Toxic Air Emissions Report (2024)
Data Source: EPA TRI (2024) • Updated Nov 2025
103,397.51 lbs
State Score
7
/ 100
National Score
11
/ 100
In 2024, industrial facilities in West Mifflin, PA released over 103,397.51 lbs of pollutants. The primary source was USS MON VALLEY WORKS - IRVIN PLANT, which emitted large quantities of Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) into the local air. Residents of 15122 face significantly higher exposure risks than the national average.
Top Polluting Facilities
- USS MON VALLEY WORKS - IRVIN PLANTOwned by: US STEEL CORPHydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) released to air47,060.00 lbsLBS
- LIBERTY PULTRUSIONS Cancer RiskOwned by: nanStyrene released to air28,824.91 lbsLBS
- USS MON VALLEY WORKS - IRVIN PLANTOwned by: US STEEL CORPEthylene released to air26,570.00 lbsLBS
- SAFETY-KLEEN SYSTEMS WEST MIFFLIN (WMP)Owned by: CLEAN HARBORS INCMethanol released to air699.00 lbsLBS
- USS MON VALLEY WORKS - IRVIN PLANT Cancer RiskOwned by: US STEEL CORPBenzene released to air199.00 lbsLBS
- USS MON VALLEY WORKS - IRVIN PLANTOwned by: US STEEL CORPZinc compounds released to air35 lbsLBS
- USS MON VALLEY WORKS - IRVIN PLANT Cancer RiskOwned by: US STEEL CORPNickel compounds released to air7 lbsLBS
- SAFETY-KLEEN SYSTEMS WEST MIFFLIN (WMP)Owned by: CLEAN HARBORS INCEthylene glycol released to air2 lbsLBS
- USS MON VALLEY WORKS - IRVIN PLANTOwned by: US STEEL CORPLead compounds released to air0.6 lbsLBS
Nearby Pollution Sources (< 20 miles)
- Jefferson Hills, PA (15025) 4.4 mi awayHeavy Industrial Activity826,289.72 lbsAnnual Emissions
- Braddock, PA (15104) 2.8 mi awayHeavy Industrial Activity125,420.67 lbsAnnual Emissions
- Monessen, PA (15062) 14.6 mi awayHeavy Industrial Activity86,386.70 lbsAnnual Emissions
Check Nearby Zip Codes
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Protect Your Lungs
Because toxic gases and VOCs were detected in this area (likely from the Benzene), standard filters are not enough. We strongly recommend an Activated Carbon purifier to adsorb these fumes.
View Recommended Carbon Filters →Chemical Breakdown
Top 5 Pollutants by Weight
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