| PPol-tex | Mont Belvieu | 100–499 | ◐ LIKELY ACTIVE |
| PPPolymer Products INC | Grand Prairie | 20–99 | ◐ LIKELY ACTIVE |
| PCPolynt Composites Usa, INC. | Ennis | — | ◐ LIKELY ACTIVE |
| PAPort Arthur Plant | Port Arthur | — | ◐ LIKELY ACTIVE |
| PNPort Neches Terminal | Port Neches | — | ◐ LIKELY ACTIVE |
| PIPpg Industries INC | La Porte | — | ◐ LIKELY ACTIVE |
| PUProman USA (pampa) LLC | Pampa | 20–99 | ◐ LIKELY ACTIVE |
| PPProske Plastic Products INC | Houston | 20–99 | ◐ LIKELY ACTIVE |
| QPQuadrant Performance Materials | Mckinney | 20–99 | ◐ LIKELY ACTIVE |
| RSReady Seal, INC. | Weatherford | 20–99 | ◐ LIKELY ACTIVE |
| RARohm and Haas Texas Incorporated | Deer Park | — | ◐ LIKELY ACTIVE |
| RCRoyal Chemical | Dallas | 20–99 | ◐ LIKELY ACTIVE |
| SRSabine River Operations | Orange | — | ◐ LIKELY ACTIVE |
| SISachem INC | Cleburne | — | ◐ LIKELY ACTIVE |
| SRSchlumberger Reservoir Completions | Rosharon | — | ◐ LIKELY ACTIVE |
Seatex LLC | Rosenberg | — | ◐ LIKELY ACTIVE |
| SSSekisui Specialty Chemicals America LLC. - Pasadena Plant | Pasadena | — | ◐ LIKELY ACTIVE |
| SCSepton Company of America | Pasadena | — | ◐ LIKELY ACTIVE |
| SCSherwin-williams CO | Ennis | — | ◐ LIKELY ACTIVE |
| SIShintech INC | Freeport | — | ◐ LIKELY ACTIVE |
| SOSigma-genosys of Texas | The Woodlands | — | ◐ LIKELY ACTIVE |
| SGSi Group INC Tx Operations | Freeport | — | ◐ LIKELY ACTIVE |
| SCSolvay Chemicals, INC | La Porte | 20–99 | ◐ LIKELY ACTIVE |
| SSSolvay Specialty Polymers LLC | Orange | 20–99 | ◐ LIKELY ACTIVE |
| SSSolvay Specialty Polymers USA - Ryton Facility | Borger | — | ◐ LIKELY ACTIVE |
| SPSovereign Pharmaceuticals | Fort Worth | 100–499 | ◐ LIKELY ACTIVE |
| TITacot INC | Houston | — | ◐ LIKELY ACTIVE |
| TCTexas City Crude Oil Terminal | Texas City | — | ◐ LIKELY ACTIVE |
| TPTexas Petrochemicals | Houston | — | ◐ LIKELY ACTIVE |
| TFThermo Fisher Scientific | Austin | 100–499 | ◐ LIKELY ACTIVE |
| TGTippett Gas Plant | Mc Camey | — | ◐ LIKELY ACTIVE |
| TCTotalenergies Cray Valley - Beaumont | Beaumont | — | ◐ LIKELY ACTIVE |
| TPTotal Petrochemicals & Refining USA INC | Deer Park | — | ◐ LIKELY ACTIVE |
| THTrecora Hydrocarbons Combined Facility | Silsbee | — | ◐ LIKELY ACTIVE |
| UCUnion Carbide Seadrift Cogen | Seadrift | — | ◐ LIKELY ACTIVE |
| ULUnited Laboratories Manufacturing | Carrollton | 100–499 | ◐ LIKELY ACTIVE |
| USU S Doe Pantex Plant | Panhandle | — | ◐ LIKELY ACTIVE |
| VCValspar Coatings | Garland | — | ◐ LIKELY ACTIVE |
| VSVictoria Site | Victoria | — | ◐ LIKELY ACTIVE |
| VPVoranol_specialty Polyurethane Chemicals (spc) | Freeport | — | ◐ LIKELY ACTIVE |
| WIWellmark International - Centeral Life Sciences | Dallas | 100–499 | ◐ LIKELY ACTIVE |
| WLWestlake Longview Corporation | Longview | 100–499 | ◐ LIKELY ACTIVE |
| 2U2007 Union Carbide Corporation Tco | Texas City | — | ◐ LIKELY ACTIVE |
| BHBasf Houston Polyurethane | Houston | — | ◐ LIKELY ACTIVE |
| BFBayport Facility | Pasadena | — | ◐ LIKELY ACTIVE |
| BPBayport Polymers LLC Ethane Cracker | Port Arthur | — | ◐ LIKELY ACTIVE |
| BCBaze Chemical Odessa | Odessa | — | ◐ LIKELY ACTIVE |
Braskem America | Freeport | — | ◐ LIKELY ACTIVE |
| CECelanese Engineered Resins INC. | Bishop | — | ◐ LIKELY ACTIVE |
| CIChemtreat, INC. Nederland, Texas | Nederland | — | ◐ LIKELY ACTIVE |