Pennsylvania hosts 92 Superfund cleanup sites, 1,116 facilities reporting to EPA's Toxic Release Inventory, and 1,005 facilities currently in significant noncompliance with federal environmental laws. EPA has assessed $347.6M in lifetime penalties across these facilities, and TRI reporters released roughly 21.6M pounds of regulated chemicals on-site in the latest reporting year. The single largest on-site releaser is U.s. Steel Mon Valley Works - Clairton Plant in Clairton, reporting 3.2M lb to EPA.
| Site | City | Status |
|---|---|---|
| A I W Frank Mid County Mustang | Exton | Ready for anticipated reuse |
| Avco Lycoming Williamsport Division | Williamsport | Construction complete |
| Baghurst Drive | Harleysville | Cleanup underway |
| Bally Ground Water Contamination | Bally | Ready for anticipated reuse |
| Bell Landfill | Terry Township | Ready for anticipated reuse |
| Bendix Flight Systems Division | South Montrose | Ready for anticipated reuse |
| Berks Sand Pit | Longswamp Township | Ready for anticipated reuse |
| Blosenski Landfill | West Caln Township | Ready for anticipated reuse |
| Boarhead Farms | Bridgeton Township | Ready for anticipated reuse |
| Borit Asbestos | Ambler | Ready for anticipated reuse |
| Breslube Penn Inc | Coraopolis | Cleanup underway |
| Brown S Battery Breaking | Hamburg | Ready for anticipated reuse |
| Butz Landfill | Stroudsburg | Ready for anticipated reuse |
| Centre County Kepone | State College | Ready for anticipated reuse |
| Chem Fab | Doylestown | Cleanup underway |
| Commodore Semiconductor Group | Lower Providence Township | Construction complete |
| Crater Resources Inc Keystone Coke Co Alan Wood Steel Co | Upper Merion Township | Cleanup underway |
| Crossley Farm | Hereford Township | Cleanup underway |
| Croydon Tce | Croydon Township | Ready for anticipated reuse |
| Cryochem Inc | Worman | Ready for anticipated reuse |
| Delta Quarries Disposal Inc Stotler Landfill | Antis/Logan Twps | Ready for anticipated reuse |
| Douglassville Disposal | Douglassville | Ready for anticipated reuse |
| Drake Chemical | Lock Haven | Ready for anticipated reuse |
| Dublin Tce Site | Dublin Borough | Cleanup underway |
| East Mount Zion | Springettsbury Township | Ready for anticipated reuse |
| Eastern Diversified Metals | Hometown | Ready for anticipated reuse |
| Elizabethtown Landfill | Elizabethtown | Ready for anticipated reuse |
| Fischer Porter Co | Warminster | Construction complete |
| Foote Mineral Co | East Whiteland Township | Construction complete |
| Former Exide Technologies Laureldale | Laureldale | Listed on NPL |
| Foster Wheeler Energy Corp Church Road Tce | Mountain Top | Cleanup underway |
| Franklin Slag Pile Mdc | Philadelphia | Remedy selected |
| Havertown Pcp | Haverford | Ready for anticipated reuse |
| Heleva Landfill | North Whitehall Twp | Ready for anticipated reuse |
| Hellertown Manufacturing Co | Hellertown | Ready for anticipated reuse |
| Henderson Road | Upper Merion Township | Ready for anticipated reuse |
| Hunterstown Road | Straban Township | Ready for anticipated reuse |
| Industrial Lane | Williams Township | Ready for anticipated reuse |
| Jacks Creek Sitkin Smelting Refining Inc | Maitland | Ready for anticipated reuse |
| Jackson Ceramix Inc | Falls Creek | Cleanup underway |
| Keystone Sanitation Landfill | Union Township | Ready for anticipated reuse |
| Kimberton | East Pikeland Township | Ready for anticipated reuse |
| Letterkenny Army Depot Pdo Area | Franklin County | Cleanup underway |
| Letterkenny Army Depot Se Area | Chambersburg | Cleanup underway |
| Lindane Dump | Harrison Township | Ready for anticipated reuse |
| Lord Shope Landfill | Girard Township | Ready for anticipated reuse |
| Lower Darby Creek Area | Darby Township | Cleanup underway |
| Malvern Tce | Malvern | Construction complete |
| Metal Bank | Philadelphia | Ready for anticipated reuse |
| Metro Container Corporation | Trainer | Listed on NPL |
| Mill Creek Dump | Erie | Ready for anticipated reuse |
| Modern Sanitation Landfill | Lower Windsor Twp | Ready for anticipated reuse |
| Mw Manufacturing | Valley Township | Ready for anticipated reuse |
| Naval Air Development Center 8 Waste Areas | Warminster Township | Construction complete |
| Navy Ships Parts Control Center | Mechanicsburg | Cleanup underway |
| North Penn Area 1 | Souderton | Ready for anticipated reuse |
| North Penn Area 12 | Worcester | Ready for anticipated reuse |
| North Penn Area 2 | Hatfield | Ready for anticipated reuse |
| North Penn Area 5 | Montgomery Township | Cleanup underway |
| North Penn Area 6 | Lansdale | Cleanup underway |
| North Penn Area 7 | North Wales | Cleanup underway |
| Novak Sanitary Landfill | South Whitehall Township | Ready for anticipated reuse |
| Occidental Chemical Corp Firestone Tire Rubber Co | Lower Pottsgrove Township | Ready for anticipated reuse |
| Ohio River Park | Neville Island | Ready for anticipated reuse |
| Old City Of York Landfill | Seven Valleys | Ready for anticipated reuse |
| Old Wilmington Road Gw Contamination | West Caln Township | Cleanup underway |
| Osborne Landfill | Grove City | Ready for anticipated reuse |
| Palmerton Zinc Pile | Palmerton | Cleanup underway |
| Paoli Rail Yard | Paoli | Ready for anticipated reuse |
| Price Battery Lead Smelter | Hamburg | Cleanup underway |
| Raymark | Hatboro | Ready for anticipated reuse |
| Revere Chemical Co | Nockamixon Township | Ready for anticipated reuse |
| Rodale Manufacturing Co Inc | Emmaus Borough | Ready for anticipated reuse |
| Ryeland Road Arsenic Site | Heidelberg Twp | Cleanup underway |
| Saegertown Industrial Area | Saegertown | Ready for anticipated reuse |
| Safety Light Corporation | Bloomsburg | Cleanup underway |
| Salford Quarry | Lower Salford Township | Cleanup underway |
| Sharon Steel Corp Farrell Works Disposal Area | Hermitage | Cleanup underway |
| Shriver S Corner | Straban Township | Ready for anticipated reuse |
| Stanley Kessler | King Of Prussia | Ready for anticipated reuse |
| Tobyhanna Army Depot | Tobyhanna | Ready for anticipated reuse |
| Tonolli Corp | Nesquehoning | Construction complete |
| Tysons Dump | Upper Merion Twp | Ready for anticipated reuse |
| Ugi Columbia Gas Plant | Columbia | Ready for anticipated reuse |
| Valmont Tce Site Former Valmont Industrial Park | West Hazleton | Construction complete |
| Walsh Landfill | Honeybrook Township | Ready for anticipated reuse |
| Watson Johnson Landfill | Richland Township | Construction complete |
| Westinghouse Electric Corp Sharon Plant | Sharon | Ready for anticipated reuse |
| Westinghouse Elevator Co Plant | Gettysburg | Ready for anticipated reuse |
| Whitmoyer Laboratories | Jackson Township | Ready for anticipated reuse |
| William Dick Lagoons | West Caln Township | Cleanup underway |
| Willow Grove Naval Air And Air Reserve Station | Horsham | Cleanup underway |