| OVOxy Vinyls, LP - La Porte Vcm Plant | La Porte | — | ◐ LIKELY ACTIVE |
| PPPasadena Performance Products | Pasadena | — | ◐ LIKELY ACTIVE |
| PPPasadena Plant | Pasadena | — | ◐ LIKELY ACTIVE |
| PPPasadena Plastics Complex | Pasadena | — | ◐ LIKELY ACTIVE |
| PPPasadena Pvc Plant | Pasadena | — | ◐ LIKELY ACTIVE |
| PIPpg Industries INC | La Porte | — | ◐ LIKELY ACTIVE |
| PPProske Plastic Products INC | Houston | 20–99 | ◐ LIKELY ACTIVE |
| RARohm and Haas Texas Incorporated | Deer Park | — | ◐ LIKELY ACTIVE |
| SSSekisui Specialty Chemicals America LLC. - Pasadena Plant | Pasadena | — | ◐ LIKELY ACTIVE |
| SCSepton Company of America | Pasadena | — | ◐ LIKELY ACTIVE |
| SCSolvay Chemicals, INC | La Porte | 20–99 | ◐ LIKELY ACTIVE |
| TITacot INC | Houston | — | ◐ LIKELY ACTIVE |
| TPTexas Petrochemicals | Houston | — | ◐ LIKELY ACTIVE |
| TPTotal Petrochemicals & Refining USA INC | Deer Park | — | ◐ LIKELY ACTIVE |
| BHBasf Houston Polyurethane | Houston | — | ◐ LIKELY ACTIVE |
| BFBayport Facility | Pasadena | — | ◐ LIKELY ACTIVE |
| ECEquistar Chemicals | Pasadena | — | ◐ LIKELY ACTIVE |
| ERE. R. Carpenter L.p. - Powell Plant | Pasadena | — | ◐ LIKELY ACTIVE |
| GTGoodyear Tire & Rubber CO Bayport Chemical Plant | Pasadena | — | ◐ LIKELY ACTIVE |
| GTGulbrandsen Technologies INC. | La Porte | — | ◐ LIKELY ACTIVE |
| ISIneos Styrolution America Bayport Plant | Pasadena | — | ◐ LIKELY ACTIVE |
| IUIneos Usa, LLC - Laporte Pao Facility | La Porte | — | ◐ LIKELY ACTIVE |
| NNoltex | La Porte | — | ◐ LIKELY ACTIVE |
| OVOxy Vinyls LP - Deer Park Pvc | Deer Park | — | ◐ LIKELY ACTIVE |
| RURohmax USA LP | Deer Park | — | ◐ LIKELY ACTIVE |
Specialty Construction Brands | Houston | — | ◐ LIKELY ACTIVE |
| TPTotal Petrochemicals Usa, INC. Bayport Hdpe Plant | Pasadena | — | ◐ LIKELY ACTIVE |
| ALAir Liquide La Porte Smr | La Porte | — | ◇ UNVERIFIED |
| ALAir Liquide - Smr Facility | Pasadena | — | ◇ UNVERIFIED |
| ANAkzo Nobel Polymer Chemicals | Pasadena | — | ◇ UNVERIFIED |
| APAmerican Plant Food | Galena Park | — | ◇ UNVERIFIED |
| AIAprm INC | Houston | — | ◇ UNVERIFIED |
| AIArkema INC | Pasadena | — | ◇ UNVERIFIED |
| ASAshland Specialty Chemical Company - Houston, Tx | Houston | — | ◇ UNVERIFIED |
| ASAthlon Solutions Bayport Facility | Pasadena | — | ◇ UNVERIFIED |
| BCBayer Cropscience | Pasadena | — | ◇ UNVERIFIED |
| BBlentech | Houston | — | ◇ UNVERIFIED |
| CCCcp Composites US | Houston | — | ◇ UNVERIFIED |
| CTCentauri Technologies | Pasadena | — | ◇ UNVERIFIED |
| CSClock Spring | Houston | — | ◇ UNVERIFIED |
| DEDegussa Engineered Carbons LP | Baytown | — | ◇ UNVERIFIED |
| DADianal America Incorporated | Pasadena | — | ◇ UNVERIFIED |
| EMEconomy Mud Products CO | Houston | — | ◇ UNVERIFIED |
| HPHouston Plant | Houston | — | ◇ UNVERIFIED |
| IPIntercoastal Paint | Houston | — | ◇ UNVERIFIED |
| IPItw Polymers Coatings NA | Houston | — | ◇ UNVERIFIED |
| LALubrizol Advanced Materials Laporte Facility | La Porte | — | ◇ UNVERIFIED |
| LALyondellbasell Acetyls LLC (formerly Millennium) | La Porte | — | ◇ UNVERIFIED |
| MMacdermid | Pasadena | — | ◇ UNVERIFIED |
| MBMaster Builders Solutions Construction Systems US - Houston | Houston | — | ◇ UNVERIFIED |