| ECEquistar Chemicals-laporte | Laporte | TX | Chemical Manufacturing325110 | — | ◐ LIKELY ACTIVE |
| GTGulbrandsen Technologies INC. | Laporte | TX | Chemical Manufacturing325180 | — | ◐ LIKELY ACTIVE |
| LALubrizol Advanced Materials Laporte Facility | Laporte | TX | Chemical Manufacturing325199 | — | ◐ LIKELY ACTIVE |
| APAir Products and Chemicals Inc.- Laporte Facility | La Porte | TX | Chemical Manufacturing325120 | 100-499 | ◐ LIKELY ACTIVE |
| APAir Products and Chemicals Inc.- Laporte Facility | LaPorte | TX | Chemical Manufacturing325120 | 100-499 | ◐ LIKELY ACTIVE |
| ALAvient Laporte | La Porte | IN | Chemical Manufacturing325991 | 20-99 | ◐ LIKELY ACTIVE |
| ALAvient Laporte | Laporte | IN | Chemical Manufacturing325991 | 20-99 | ◐ LIKELY ACTIVE |
| BPBayport PVOH | LaPorte | TX | Chemical Manufacturing325211 | 20-99 | ◐ LIKELY ACTIVE |
| GCGulbrandsen Chemicals - LaPorte Facility | La Porte | TX | Chemical Manufacturing325180 | 1-19 | ◐ LIKELY ACTIVE |
| GCGulbrandsen Chemicals - LaPorte Facility | LaPorte | TX | Chemical Manufacturing325180 | 1-19 | ◐ LIKELY ACTIVE |
| LPLaPorte Plant | LaPorte | TX | Chemical Manufacturing325180 | 20-99 | ◐ LIKELY ACTIVE |
| LPLaPorte Plant | La Porte | TX | Chemical Manufacturing325180 | 20-99 | ◐ LIKELY ACTIVE |
| LPLaPorte PVOH | LaPorte | TX | Chemical Manufacturing325211 | 100-499 | ◐ LIKELY ACTIVE |
| LPLaPorte PVOH | La Porte | TX | Chemical Manufacturing325211 | 100-499 | ◐ LIKELY ACTIVE |
| LLaPorte/Springville | La Porte | IN | Chemical Manufacturing325120 | 500+ | ◐ LIKELY ACTIVE |
| LLaPorte/Springville | LaPorte | IN | Chemical Manufacturing325120 | 500+ | ◐ LIKELY ACTIVE |
| IPIneos Polyethylene | Laporte | TX | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |