| APAir Products Port Arthur | Port Arthur | 20–99 | ● ACTIVE |
| CRChemtrade Refinery Services | Beaumont | 20–99 | ● ACTIVE |
Helena Laboratories Corporation | Beaumont | — | ● ACTIVE |
Monument Chemical Port Arthur, LLC | Port Arthur | 20–99 | ● ACTIVE |
| ICIneos Calabrian Corporation | Port Neches | 20–99 | ● ACTIVE |
Skyguard Coatings LLC | Port Arthur | — | ● ACTIVE |
| BBBasf, Beaumont Plant | Beaumont | 100–499 | ◐ LIKELY ACTIVE |
| EBExxonmobil Beaumont Chemical Plant (bmcp) | Beaumont | 100–499 | ◐ LIKELY ACTIVE |
| AIArkema INC. - Beaumont Plant | Beaumont | — | ◐ LIKELY ACTIVE |
| BTBasf Totalenergies Petrochemicals LLC | Port Arthur | — | ◐ LIKELY ACTIVE |
| BGBeaumont Gas to Gasoline Plant | Beaumont | — | ◐ LIKELY ACTIVE |
| NLNatgasoline LLC | Beaumont | 100–499 | ◐ LIKELY ACTIVE |
| PAPort Arthur Plant | Port Arthur | — | ◐ LIKELY ACTIVE |
| PNPort Neches Terminal | Port Neches | — | ◐ LIKELY ACTIVE |
| TCTotalenergies Cray Valley - Beaumont | Beaumont | — | ◐ LIKELY ACTIVE |
| BPBayport Polymers LLC Ethane Cracker | Port Arthur | — | ◐ LIKELY ACTIVE |
| CIChemtreat, INC. Nederland, Texas | Nederland | — | ◐ LIKELY ACTIVE |
| EMExxon Mobil Chemical CO. | Beaumont | — | ◐ LIKELY ACTIVE |
| LPLinde - Pa 497 | Port Arthur | — | ◐ LIKELY ACTIVE |
| LILucite International INC | Nederland | — | ◐ LIKELY ACTIVE |
| CBChemours - Beaumont Works | Beaumont | — | ◇ UNVERIFIED |
| DGDiamond Green Diesel | Port Arthur | — | ◇ UNVERIFIED |
| MUMerisol USA LLC | Winnie | — | ◇ UNVERIFIED |
| NTNeches Terminal / Neches West | Beaumont | — | ◇ UNVERIFIED |
| RBRenewable Bio Fuels | Port Neches | — | ◇ UNVERIFIED |
| SWSuez Wts USA INC Beaumont - Plant | Beaumont | — | ◇ UNVERIFIED |
| BPBeaumont Plant | Beaumont | — | ◐ LIKELY ACTIVE |
Indorama Ventures Oxides LLC | Port Neches | 500+ | ◐ LIKELY ACTIVE |
| ALAir Liquide Large Industries Nederland | Nederland | — | ◐ LIKELY ACTIVE |
| BABeaumont Aniline | Nederland | — | ◐ LIKELY ACTIVE |
| BMBeaumont Marine West Terminal | Beaumont | — | ◐ LIKELY ACTIVE |
| ACAfton Chemical Additives Port Arthur Facility | Port Arthur | — | ◇ UNVERIFIED |
| CRChemical Recovery Technologies LLC | Port Arthur | — | ◇ UNVERIFIED |
| CSChemical Specialty Plant | Beaumont | — | ◇ UNVERIFIED |
| LBLinde - Beaumont | Beaumont | — | ◇ UNVERIFIED |
| PGPd Glycol Beaumont Plant | Beaumont | — | ◇ UNVERIFIED |
| PAPort Arthur Plant | Port Arthur | — | ◇ UNVERIFIED |
| PNPort Neches Plant | Port Neches | — | ◇ UNVERIFIED |
| PPPraxair Port Arthur Hydrogen Facility | Port Arthur | — | ◇ UNVERIFIED |
| RSResin Solutions | Beaumont | — | ◇ UNVERIFIED |
| 4C4-l Chemicals, LLC | Beaumont | — | ◐ LIKELY ACTIVE |
| CChemTreat-Nederland | Nederland | 20–99 | ◐ LIKELY ACTIVE |
| MCMotiva Chemicals LLC | Port Arthur | 100–499 | ◐ LIKELY ACTIVE |
| AAA & a Fertilizer LTD | Beaumont | — | ◇ UNVERIFIED |
| ALAir Liquide Spindletop Hydrogen Storage | Beaumont | — | ◇ UNVERIFIED |
| ASAmeripol Synpol CORP | Port Neches | — | ◇ UNVERIFIED |
| BCBeaumont Chemical Plant | Beaumont | — | ◇ UNVERIFIED |
| BNBeaumont New Ammonia Storage Facility | Nederland | — | ◇ UNVERIFIED |
| BPBeaumont Polyethylene Plant | Beaumont | — | ◇ UNVERIFIED |
| COCrt Oil | Port Arthur | — | ◇ UNVERIFIED |