| ACAfton Chemical Corporation | Pasadena | 100–499 | ● ACTIVE |
Control Solutions | Pasadena | 100–499 | ● ACTIVE |
Dixie Chemical Company, INC. | Pasadena | 100–499 | ● ACTIVE |
| GPGrace Pasadena Catalyst Site | Pasadena | 100–499 | ● ACTIVE |
| KNKaneka North America LLC | Pasadena | 100–499 | ● ACTIVE |
| KKetjen | Pasadena | 100–499 | ● ACTIVE |
| LCLyondell Chemical - Bayport Plant | Pasadena | 100–499 | ● ACTIVE |
| NCNippon Chemical Texas INC | Pasadena | 100–499 | ● ACTIVE |
| SPSeatex - Pasadena | Pasadena | 20–99 | ● ACTIVE |
| TLThe Lubrizol Corporation, Bayport Plant | Pasadena | 100–499 | ● ACTIVE |
| UCUmicore Catalyst USA | Pasadena | 20–99 | ● ACTIVE |
| PNPci Nitrogen LLC | Pasadena | — | ● ACTIVE |
Wilhelmsen Ships Service, INC | Pasadena | — | ● ACTIVE |
Complete Environmental Products INC | Pasadena | — | ● ACTIVE |
| PPasadena | Pasadena | 20–99 | ◐ LIKELY ACTIVE |
| TWTrecora Wax LLC | Pasadena | 100–499 | ◐ LIKELY ACTIVE |
| AFAgrifos Fertilizer L.l.c. | Pasadena | — | ◐ LIKELY ACTIVE |
| ALAir Liquide Large Industries Uslp | Pasadena | — | ◐ LIKELY ACTIVE |
| BCBasf Corporation Pasadena Texas Plant | Pasadena | — | ◐ LIKELY ACTIVE |
| HTHaldor Topsoe INC | Pasadena | — | ◐ LIKELY ACTIVE |
| IAIneos Americas Pasadena Site | Pasadena | — | ◐ LIKELY ACTIVE |
| LGLinde Gas North America LLC - Clearlake Plant | Pasadena | — | ◐ 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 |
| SSSekisui Specialty Chemicals America LLC. - Pasadena Plant | Pasadena | — | ◐ LIKELY ACTIVE |
| SCSepton Company of America | Pasadena | — | ◐ 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 |
| ISIneos Styrolution America Bayport Plant | Pasadena | — | ◐ LIKELY ACTIVE |
| TPTotal Petrochemicals Usa, INC. Bayport Hdpe Plant | Pasadena | — | ◐ LIKELY ACTIVE |
| ALAir Liquide - Smr Facility | Pasadena | — | ◇ UNVERIFIED |
| ANAkzo Nobel Polymer Chemicals | Pasadena | — | ◇ UNVERIFIED |
| AIArkema INC | Pasadena | — | ◇ UNVERIFIED |
| ASAthlon Solutions Bayport Facility | Pasadena | — | ◇ UNVERIFIED |
| BCBayer Cropscience | Pasadena | — | ◇ UNVERIFIED |
| CTCentauri Technologies | Pasadena | — | ◇ UNVERIFIED |
| DADianal America Incorporated | Pasadena | — | ◇ UNVERIFIED |
| MMacdermid | Pasadena | — | ◇ UNVERIFIED |
| MCMonument Chemical Bayport LLC - Bayport Indl Complex | Pasadena | — | ◇ UNVERIFIED |
| NCNissan Chemical America Pasadena Plant | Pasadena | — | ◇ UNVERIFIED |
| OPOxiteno Pasadena Plant | Pasadena | — | ◇ UNVERIFIED |
| BPBayport Polymers | Pasadena | — | ◐ LIKELY ACTIVE |
| CTCentauri Technologies LP | Pasadena | 20–99 | ◐ LIKELY ACTIVE |
| DCDixie Chemical Bayport Facility | Pasadena | — | ◐ LIKELY ACTIVE |
| IVIndorama Ventures Bayport Clear Lake Site | Pasadena | 20–99 | ◐ LIKELY ACTIVE |
| ICIntergulf CORP Lonestar Ecology LLC (lonstr) | Pasadena | — | ◐ LIKELY ACTIVE |