Montgomery County contains 832 EPA-regulated facilities, 22 of which are currently flagged for significant noncompliance. The county also hosts 17 Superfund sites and 50 TRI chemical reporters. EPA has assessed $13.1M in lifetime penalties and TRI reporters disclosed roughly 1.3M lb of on-site releases. That facility count is well above the Pennsylvania state average of 222 per county.
| Site | City | Status |
|---|---|---|
| Stanley Kessler | King Of Prussia | Ready for anticipated reuse |
| North Penn Area 1 | Souderton | Ready for anticipated reuse |
| North Penn Area 2 | Hatfield | Ready for anticipated reuse |
| Henderson Road | Upper Merion Township | Ready for anticipated reuse |
| Crater Resources Inc Keystone Coke Co Alan Wood Steel Co | Upper Merion Township | Cleanup underway |
| Raymark | Hatboro | Ready for anticipated reuse |
| Salford Quarry | Lower Salford Township | Cleanup underway |
| North Penn Area 6 | Lansdale | Cleanup underway |
| North Penn Area 5 | Montgomery Township | Cleanup underway |
| North Penn Area 7 | North Wales | Cleanup underway |
| Borit Asbestos | Ambler | Ready for anticipated reuse |
| Baghurst Drive | Harleysville | Cleanup underway |
| North Penn Area 12 | Worcester | Ready for anticipated reuse |
| Commodore Semiconductor Group | Lower Providence Township | Construction complete |
| Tysons Dump | Upper Merion Twp | Ready for anticipated reuse |
| Willow Grove Naval Air And Air Reserve Station | Horsham | Cleanup underway |
| Occidental Chemical Corp Firestone Tire Rubber Co | Lower Pottsgrove Township | Ready for anticipated reuse |