Oklahoma hosts 10 Superfund cleanup sites, 422 facilities reporting to EPA's Toxic Release Inventory, and 198 facilities currently in significant noncompliance with federal environmental laws. EPA has assessed $97.2M in lifetime penalties across these facilities, and TRI reporters released roughly 32.2M pounds of regulated chemicals on-site in the latest reporting year. The single largest on-site releaser is Koch Fertilizer Enid, Llc in Enid, reporting 6.1M lb to EPA.
| Site | City | Status |
|---|---|---|
| Eagle Industries | Midwest City | Listed on NPL |
| Fansteel Metals Fmri | Muskogee | Listed on NPL |
| Hardage Criner | Criner | Construction complete |
| Henryetta Iron And Metal | Henryetta | Listed on NPL |
| Hudson Refinery | Cushing | Ready for anticipated reuse |
| National Zinc Corp | Bartlesville | Cleanup underway |
| Oklahoma Refining Co | Cyril | Cleanup underway |
| Tar Creek Ottawa County | Ottawa County | Cleanup underway |
| Tinker Air Force Base Soldier Creek Building 3001 | Oklahoma City | Cleanup underway |
| Wilcox Oil Company | Creek County | Cleanup underway |