| HEHuntsman Ethyleneamines | Freeport | TX | Chemical Manufacturing325110 | — | ◐ LIKELY ACTIVE |
IFS Industries - Garland | Garland | TX | Chemical Manufacturing325520 | 20-99 | ◐ LIKELY ACTIVE |
| IVIndorama Ventures Bayport Clear Lake Site | Pasadena | TX | Chemical Manufacturing325199 | 20-99 | ◐ LIKELY ACTIVE |
Indorama Ventures Oxides LLC | Port Neches | TX | Chemical Manufacturing325110 | 500+ | ◐ LIKELY ACTIVE |
| IOIneos Oligomers Chocolate Bayou | Alvin | TX | Chemical Manufacturing325110 | — | ◐ LIKELY ACTIVE |
| IUIneos US Chemicals Company | Texas City | TX | Chemical Manufacturing325110 | 20-99 | ◐ LIKELY ACTIVE |
| IIInkjet INC | Willis | TX | Chemical Manufacturing325910 | 20-99 | ◐ LIKELY ACTIVE |
| ICIntergulf CORP Lonestar Ecology LLC (lonstr) | Pasadena | TX | Chemical Manufacturing325180 | — | ◐ LIKELY ACTIVE |
| IIINX International Ink Co. 6700 | Arlington | TX | Chemical Manufacturing325910 | 20-99 | ◐ LIKELY ACTIVE |
| KAKuraray America, INC | Pasadena | TX | Chemical Manufacturing325180 | — | ◐ LIKELY ACTIVE |
| LSLaund-Dry Supply Company, Inc - El Paso | El Paso | TX | Chemical Manufacturing325611 | 20-99 | ◐ LIKELY ACTIVE |
| LELion Elastomers Orange | Orange | TX | Chemical Manufacturing325188 | — | ◐ LIKELY ACTIVE |
| LALyondellbasell Acetyls Llc, La Porte Methanol Plant | La Porte | TX | Chemical Manufacturing325000 | — | ◐ LIKELY ACTIVE |
| MRMechanical Rubber Texas | Brenham | TX | Chemical Manufacturing325212 | 1-19 | ◐ LIKELY ACTIVE |
| MMidland | Midland | TX | Chemical Manufacturing325998 | 20-99 | ◐ LIKELY ACTIVE |
| NTNalco Texarkana Plant | Texarkana | TX | Chemical Manufacturing325110 | — | ◐ LIKELY ACTIVE |
| NNutech | Edinburg | TX | Chemical Manufacturing325314 | — | ◐ LIKELY ACTIVE |
| NTNutrient Technologies | Edinburg | TX | Chemical Manufacturing325314 | — | ◐ LIKELY ACTIVE |
| OCOccidental Chemical Oxychem- Portland Plant | Gregory | TX | Chemical Manufacturing325110 | — | ◐ LIKELY ACTIVE |
| OTOiltanking Texas City Terminal | Texas City | TX | Chemical Manufacturing325120 | — | ◐ LIKELY ACTIVE |
| OBOxea Bishop, LLC | Bishop | TX | Chemical Manufacturing325110 | 20-99 | ◐ LIKELY ACTIVE |
| OSOxyChem-Dallas Silicate Plant | Dallas | TX | Chemical Manufacturing325180 | 20-99 | ◐ LIKELY ACTIVE |
| OCOyster Creek Unit Viii | Freeport | TX | Chemical Manufacturing325110 | — | ◐ LIKELY ACTIVE |
| PMPergan Marshall | Marshall | TX | Chemical Manufacturing325199 | 20-99 | ◐ LIKELY ACTIVE |
| PBPlainview Bioenergy | Plainview | TX | Chemical Manufacturing325193 | 20-99 | ◐ LIKELY ACTIVE |
| PPoly-america | Grand Prairie | TX | Chemical Manufacturing325211 | 500+ | ◐ LIKELY ACTIVE |
| PPPolyguard Products | Corsicana | TX | Petroleum and Coal Products Manufacturing324122 | 20-99 | ◐ LIKELY ACTIVE |
| PDPraxair Deer Park Plant | Deer Park | TX | Chemical Manufacturing325120 | — | ◐ LIKELY ACTIVE |
| PIPurity Isobutylene Plant and Pasadena Terminal | Pasadena | TX | Chemical Manufacturing325110 | — | ◐ LIKELY ACTIVE |
| PPPva Plant | La Porte | TX | Chemical Manufacturing325211 | — | ◐ LIKELY ACTIVE |
| QPQuva Pharma | Sugar Land | TX | Chemical Manufacturing325411 | — | ◐ LIKELY ACTIVE |
| RRReichhold Reactive Polymers Division Houston Plant | Houston | TX | Chemical Manufacturing325211 | — | ◐ LIKELY ACTIVE |
| STScion Technologies | Pasadena | TX | Chemical Manufacturing325199 | 20-99 | ◐ LIKELY ACTIVE |
| SPSealy Plant | Sealy | TX | Chemical Manufacturing325180 | 20-99 | ◐ LIKELY ACTIVE |
| SPShrieve Performance Packaging | Cut and Shoot | TX | Petroleum and Coal Products Manufacturing324191 | 20-99 | ◐ LIKELY ACTIVE |
| SSika-mesquite | Mesquite | TX | Chemical Manufacturing325520 | 1-19 | ◐ LIKELY ACTIVE |
| SCSilver Creek Materials INC | Fort Worth | TX | Chemical Manufacturing325314 | 20-99 | ◐ LIKELY ACTIVE |
| SPSk Primacor Americas | Freeport | TX | Chemical Manufacturing325199 | — | ◐ LIKELY ACTIVE |
| SGSlaughter Gasoline Plant | Sundown | TX | Chemical Manufacturing325120 | — | ◐ LIKELY ACTIVE |
Southern Ionics INC | Pasadena | TX | Chemical Manufacturing325180 | — | ◐ LIKELY ACTIVE |
| SPSouth Plains Compost | Slaton | TX | Chemical Manufacturing325314 | 20-99 | ◐ LIKELY ACTIVE |
| SQSpectrum Quality Standards | Houston | TX | Chemical Manufacturing325120 | — | ◐ LIKELY ACTIVE |
| SSSumika Semiconductor Materials Texas | Baytown | TX | Chemical Manufacturing325199 | 20-99 | ◐ LIKELY ACTIVE |
| SHSweeny Hydrogen Production Plant | Sweeny | TX | Chemical Manufacturing325120 | — | ◐ LIKELY ACTIVE |
| TBTBC Brinadd, LLC. | Houston | TX | Chemical Manufacturing325998 | 1-19 | ◐ LIKELY ACTIVE |
| TKTessenderlo Kerley | Dumas | TX | Chemical Manufacturing325180 | — | ◐ LIKELY ACTIVE |
| TITexas Industries | Dallas | TX | Chemical Manufacturing325910 | 1-19 | ◐ LIKELY ACTIVE |
| TCThe Chemours Company FC, LLC - La Porte | La Porte | TX | Chemical Manufacturing325180 | 100-499 | ◐ LIKELY ACTIVE |
| TSThe Scotts Company - Huntsville | Huntsville | TX | Chemical Manufacturing325314 | 20-99 | ◐ LIKELY ACTIVE |
| ULUniwell Laboratories, LLC | Fort Worth | TX | Chemical Manufacturing325412 | 100-499 | ◐ LIKELY ACTIVE |