| CRCatalyst Refiners INC | Nitro | 20–99 | ● ACTIVE |
| CLCovestro Llc, South Charleston | South Charleston | 20–99 | ● ACTIVE |
| IWInnovative Water Care, LLC. | South Charleston | 20–99 | ● ACTIVE |
| TCThe Chemours Company Fc, Llc, Belle | Belle | 100–499 | ● ACTIVE |
| KPKureha Pga, LLC | Belle | 20–99 | ◐ LIKELY ACTIVE |
| UCUnion Carbide Corporation, Institute Plant | Institute | — | ◐ LIKELY ACTIVE |
| UCUnion Carbide CORP -so Charleston Fac. | South Charleston | — | ◐ LIKELY ACTIVE |
| UCUnion Carbide CORP Technology Park | Charleston | — | ◐ LIKELY ACTIVE |
| UMUS Methanol Llc, Liberty One Methanol Plant | Nitro | — | ◐ LIKELY ACTIVE |
| AIAc&s INC | Nitro | — | ◐ LIKELY ACTIVE |
| UTUnivation Technologies LLC - Catalyst Plant | South Charleston | — | ◐ LIKELY ACTIVE |
| ACA, C, and S INC. | Nitro | 20–99 | ◐ LIKELY ACTIVE |
| IWInnovative Water Care LLC (formerly Clearon Corporation) | South Charleston | — | ◐ LIKELY ACTIVE |
| SPSpecialty Products Us, LLC - Polyox Plant | Institute | — | ◐ LIKELY ACTIVE |
| UCUnion Carbide Corporation-institute | Institute | 20–99 | ◐ LIKELY ACTIVE |
| ASAltivia Services, Llc, Institute Plant | Dunbar | — | ◐ LIKELY ACTIVE |
| GWGlyeco West Virginia INC - Recovery Solutions & Technologies INC | Nitro | — | ◐ LIKELY ACTIVE |
| M3Mc (us) 3 Llc, Glutaraldehyde Plant | Dunbar | — | ◐ LIKELY ACTIVE |
| UCUnion Carbide Corporation - Ucc Technology Park Operations | South Charleston | — | ◐ LIKELY ACTIVE |
| BMBayer Materialscience LLC ( Sc Technical Center) | South Charleston | — | ◇ UNVERIFIED |
| CSCamc - Solutions | Charleston | — | ◇ UNVERIFIED |
| ESElementis Specialties, INC. | Charleston | — | ◇ UNVERIFIED |
| FEFike Enterprises INC | Nitro | — | ◇ UNVERIFIED |
| FCFmc Corporation, Spring Hill Plant | South Charleston | — | ◇ UNVERIFIED |
| IWInstitute Wv Facility | Institute | — | ◇ UNVERIFIED |
| M3Mc (us) 3 LLC | Dunbar | — | ◇ UNVERIFIED |
| NCNorth Charleston Distribution Terminal | Charleston | — | ◇ UNVERIFIED |
| PCPraxair Com | Marmet | — | ◇ UNVERIFIED |
| SPSpecialty Products Us, LLC | Institute | — | ◇ UNVERIFIED |
| SPSpecialty Products Us, LLC - Glutaraldehyde Plant | Institute | — | ◇ UNVERIFIED |
| SCSynectic CORP | Saint Albans | — | ◇ UNVERIFIED |
| UCUnion Carbide CORP Holz Impoundment | Near South Charleston | — | ◇ UNVERIFIED |
| AAArclin Amines | Belle | 20–99 | ◐ LIKELY ACTIVE |
| OBOptima Belle LLC | Belle | 20–99 | ◐ LIKELY ACTIVE |
| UMUS Methanol | Nitro | 20–99 | ◐ LIKELY ACTIVE |
| BMBayer Materialscience LLC | Institute | — | ◇ UNVERIFIED |
| EDE.i. Dupont De Nemours Chemical Company | Belle | — | ◇ UNVERIFIED |
| RSRecovery Solutions & Technologies, INC. | Institute | — | ◇ UNVERIFIED |
| SPSpecialty Products - Institute | Institute | — | ◇ UNVERIFIED |
| TATransparent Armor LLC | South Charleston | — | ◇ UNVERIFIED |
| UCUnion Carbide Corporation - Dow Chemical CO | Institute | — | ◇ UNVERIFIED |