| ICIntergulf CORP Lonestar Ecology LLC (lonstr) | Pasadena | TX | Chemical Manufacturing325180 | — | ◐ LIKELY ACTIVE |
| KAKuraray America, INC | Pasadena | TX | Chemical Manufacturing325180 | — | ◐ LIKELY ACTIVE |
| MIMagsphere, INC. | Pasadena | CA | Chemical Manufacturing325211 | — | ▲ REPORTED CLOSED |
| PIPurity Isobutylene Plant and Pasadena Terminal | Pasadena | TX | Chemical Manufacturing325110 | — | ◐ LIKELY ACTIVE |
| STScion Technologies | Pasadena | TX | Chemical Manufacturing325199 | 20-99 | ◐ LIKELY ACTIVE |
Southern Ionics INC | Pasadena | TX | Chemical Manufacturing325180 | — | ◐ LIKELY ACTIVE |
| AAAmerican Acryl | Pasadena | TX | Petroleum and Coal Products Manufacturing324199 | — | ◐ LIKELY ACTIVE |
| CCCalpine Clear Lake Cogeneration | Pasadena | TX | Chemical Manufacturing325120 | — | ◐ LIKELY ACTIVE |
| SPSunedison Polysilicon Facility | Pasadena | TX | Chemical Manufacturing325180 | — | ◐ LIKELY ACTIVE |
| ZCZeon Chemicals Texas Plant | Pasadena | TX | Chemical Manufacturing325212 | — | ◐ LIKELY ACTIVE |
| BPBayport Plant | Pasadena | TX | Petroleum and Coal Products Manufacturing324110 | — | ◇ UNVERIFIED |
| BGBoc Gases | Pasadena | TX | Chemical Manufacturing325120 | — | ◇ UNVERIFIED |
| CCCalgon Corporation Sub Merck and CO | Pasadena | TX | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| EEEffective Environmental - Pasadena Facility | Pasadena | TX | Chemical Manufacturing325120 | — | ◇ UNVERIFIED |
| ECEthyl Corporation | Pasadena | TX | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| EPEvonik Pasadena | Pasadena | TX | Chemical Manufacturing325110 | — | ◇ UNVERIFIED |
| HHHna Holdings INC. | Pasadena | TX | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| JLJuul Labs, INC. | Pasadena | CA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| KTKaneka Texas Cpvc Plant | Pasadena | TX | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| KCKior CORP | Pasadena | TX | Chemical Manufacturing325194 | — | ◇ UNVERIFIED |
| KAKuraray America Inc., Poval Bu, Bayport Plant | Pasadena | TX | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| LLLinde-clear Lake | Pasadena | TX | Chemical Manufacturing325120 | — | ◇ UNVERIFIED |
| MIMateria, INC. | Pasadena | CA | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| PMPasadena Methanol Plant | Pasadena | TX | Chemical Manufacturing325000 | — | ◇ UNVERIFIED |
| PCPolyone Corporation | Pasadena | TX | Chemical Manufacturing325991 | — | ◇ UNVERIFIED |
| SPSun Products Corporation Texas | Pasadena | TX | Chemical Manufacturing325611 | — | ◇ UNVERIFIED |
| SUSyensqo USA LLC | Pasadena | TX | Chemical Manufacturing325613 | — | ◇ UNVERIFIED |
Syngenta Crop Protection - Bay Port Site | Pasadena | TX | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| TKTessenderlo Kerley INC | Pasadena | TX | Chemical Manufacturing325188 | — | ◇ UNVERIFIED |
| TCTotal Clean Pasadena Tank Wash | Pasadena | TX | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| UEUSA Environment | Pasadena | TX | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| APAir Products and Chemicals Operating Service Center (OSC) | Pasadena | TX | Chemical Manufacturing325120 | 20-99 | ◐ LIKELY ACTIVE |
| AAmericanAcryl | Pasadena | TX | Chemical Manufacturing325199 | 20-99 | ◐ LIKELY ACTIVE |
| ACArkema Clear Lake | Pasadena | TX | Chemical Manufacturing325199 | 100-499 | ◐ LIKELY ACTIVE |
| APArrowhead Pharmaceuticals, INC. | Pasadena | CA | Chemical Manufacturing325412 | — | ◐ LIKELY ACTIVE |
| AMAurora Material Solutions - TXUS01PR | Pasadena | TX | Chemical Manufacturing325991 | 20-99 | ◐ LIKELY ACTIVE |
| EElastomers | Pasadena | TX | Chemical Manufacturing325211 | 20-99 | ◐ LIKELY ACTIVE |
| EAEvonik Active Oxygens, LLC - Bayport | Pasadena | TX | Chemical Manufacturing325180 | 20-99 | ◐ LIKELY ACTIVE |
| GPGeon Performance Solutions Pasadena | Pasadena | TX | Chemical Manufacturing325211 | 20-99 | ◐ LIKELY ACTIVE |
| ISINEOS Styrolution | Pasadena | TX | Chemical Manufacturing325194 | 100-499 | ◐ LIKELY ACTIVE |
| KPKetjen Pasadena | Pasadena | TX | Chemical Manufacturing325199 | 100-499 | ◐ LIKELY ACTIVE |
| KKpac | Pasadena | TX | Chemical Manufacturing325211 | 1-19 | ◐ LIKELY ACTIVE |
| MOMacDermid Offshore Solutions | Pasadena | TX | Chemical Manufacturing325998 | 20-99 | ◐ LIKELY ACTIVE |
| MCMitsubishi Chemical America, Inc. - Specialty Resins Divisin | Pasadena | TX | Chemical Manufacturing325211 | 20-99 | ◐ LIKELY ACTIVE |
| MPModern Polymer PRODUCTS INC | Pasadena | TX | Chemical Manufacturing325991 | 20-99 | ◐ LIKELY ACTIVE |
| MCMonument Chemical Bayport | Pasadena | TX | Chemical Manufacturing325199 | 20-99 | ◐ LIKELY ACTIVE |
| NSNippon Shokubai America Industries, Inc | Pasadena | TX | Chemical Manufacturing325199 | 20-99 | ◐ LIKELY ACTIVE |
| RUReagens USA | Pasadena | TX | Chemical Manufacturing325199 | 20-99 | ◐ LIKELY ACTIVE |
| SSSekisui Specialty Chemicals America,LLC. | Pasadena | TX | Chemical Manufacturing325211 | 20-99 | ◐ LIKELY ACTIVE |
| SPSII Pasadena | Pasadena | TX | Chemical Manufacturing325180 | 20-99 | ◐ LIKELY ACTIVE |