Pollution in Allegheny County, Pennsylvania

Allegheny County contains 1,148 EPA-regulated facilities, 28 of which are currently flagged for significant noncompliance. The county also hosts 3 Superfund sites and 60 TRI chemical reporters. EPA has assessed $26.1M in lifetime penalties and TRI reporters disclosed roughly 3.6M lb of on-site releases. That facility count is well above the Pennsylvania state average of 222 per county.

Superfund3NPL sites
TRI Facilities60reporters
EPA Facilities1,148regulated
Sig. Violators28current SNC

Superfund sites

SiteCityStatus
Breslube Penn IncCoraopolisCleanup underway
Ohio River ParkNeville IslandReady for anticipated reuse
Lindane DumpHarrison TownshipReady for anticipated reuse

Largest releasers

FacilityCityOn-site (lb)Status
U.s. Steel Mon Valley Works - Clairton PlantClairton3.2MSig. violation
Uss Corp/Edgar Thomson WorksBraddock113.5kSig. violation
Uss Mon Valley Works - Irvin PlantWest Mifflin75.4kPenalties
Eastman Chemical CompanyWest Elizabeth50.4kSig. violation
Liberty Pultrusions/West MifflinWest Mifflin28.8kPenalties
Tube City Ims/Slag ProcessingBraddock27.9kPenalties
Ppg Ind Inc/SpringdaleSpringdale22.2kCompliant
Neville Chemical CompanyPittsburgh14.4kSig. violation
Ineos Composites Us, LlcPittsburgh13.8kPenalties
Calgon Carbon Corp - Neville Island PltPittsburgh7.0kPenalties
Libertas Copper (Former Hussey)Leetsdale6.1kPenalties
Tech Met Inc/GlassportGlassport5.9kPenalties
Matthews Intl Bronze Div/PghPittsburgh5.8kCompliant
Pressure Chem Co/PghPittsburgh3.7kCompliant
Allegheny Ludlum LlcBrackenridge1.6kCompliant
The Sherwin-Williams CoPittsburgh1.1kPenalties
Anker IndustriesTurtle Creek1.0kCompliant
Pgh Elec Insulation Inc/MunhallMunhall889Compliant
Allegheny Petroleum Products CoWilmerding776Compliant
Univar Usa Inc/BunolaBunola721Penalties
Safety-Kleen Sys (414502)West Mifflin701Penalties
Epic Metals Corp/RankinRankin659Compliant
Chase Corp ZetaPittsburgh534Compliant
Universal Stainless & Alloy Prod/BridgevBridgeville488Sig. violation
Mcconway & Torley Llc/Steel Castings MfgPittsburgh405Penalties
Thermal Transfer CorpDuquesne260Compliant
Ppg Ind/Chem Tech CtrMonroeville126Compliant
Kopp Glass Inc/PghSwissvale121Penalties
Curtiss Wright Electro Mech CorpCheswick58Penalties
Chase Corporation/BlawnoxBlawnox53Compliant
Marathon Ashland Petro Floreffe Term/AspJefferson23Compliant
Ati Powder Metals, LlcOakdale11Compliant
Holtec ManufacturingEast Pittsburgh5Compliant
Northeast Paving Bridgeville PltBridgeville1Compliant

Significant violators

FacilityCityPenaltiesLast Inspected
U.s. Steel Mon Valley Works - Clairton PlantClairton$10.7M2025-08-21
Eastman Chemical CompanyWest Elizabeth$6.1M2025-05-07
Uss Corp/Edgar Thomson WorksBraddock$3.0M2025-09-26
Harsco Metals Bri Llc/BraddockBraddock$276.5k2025-09-05
Greater Pgh Intl Airport Midfield TermPittsburgh$87.5k2026-03-04
Neville Chemical CompanyPittsburgh$56.5k2024-07-08
Bunting Graphics, Inc.Verona$17.5k2024-06-25
Joseph A Berkley WtpPittsburgh$1.8k2024-04-02
Monarch Mine Dewatering SiteRural Ridge$02023-06-09
Bastin Truck PartsTarentum$02026-01-16
Pgh Pa Motor SpeedwayMcdonald$02026-01-10
Universal Stainless & Alloy Prod/BridgevBridgeville$02025-08-18
Irvin Rail YardsWest Mifflin$02025-08-21
Renton PilePlum$0
Ace Auto Wrecking IncVerona$02025-06-10
Gateway CtrPittsburgh$02025-04-02
Altium Packaging Verona FacVerona$02025-01-15
New Choice Home DecoPittsburgh$02025-03-12
Mcshane QuarryCarnegie$02026-02-17
Whemco Steel Castings Inc/West HomesteadHomestead$02022-07-27
The Home City Ice CoBethel Park$02025-10-27
Robinson Twp Muni Auth-Robinson Wat Trt PltPittsburgh$02026-02-17
Blawnox Boro Water DeptPittsburgh$0
Deer Lakes Park SftfPittsburgh$02023-07-17
Wine Concrete Prod IncSewickley$02024-06-21
Washington Pike Ind ParkCarnegie$02025-06-10
U.s. Department Of Energy, National Energy Technology LaboratoryPittsburgh$02025-12-08
Extrel Cms LlcPittsburgh$02024-10-07