| AUAllnex USA INC | Belmont | 20–99 | ● ACTIVE |
| CRCatalyst Refiners INC | Nitro | 20–99 | ● ACTIVE |
| CIChem-pak INC | Martinsburg | 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 |
| CTCampbell Transportation | Newell | 20–99 | ● ACTIVE |
Esc Brands LLC | Bluefield | — | ● ACTIVE |
| KPKureha Pga, LLC | Belle | 20–99 | ● ACTIVE |
| MPMylan Pharmaceuticals INC | Morgantown | — | ● ACTIVE |
| RLRandox Laboratories-us LTD | Kearneysville | — | ● ACTIVE |
American Medicines Company, Pbc | Davisville | — | ● ACTIVE |
Appalachian Botanical Company LLC | Foster | — | ● ACTIVE |
Cie Defense LLC | Summit Point | — | ● ACTIVE |
Exesalibero Pharma, INC | Morgantown | — | ● ACTIVE |
Greenstone LLC | Morgantown | — | ● ACTIVE |
Marauder Group LLC | Falling Waters | — | ● ACTIVE |
Mylan Institutional LLC | Morgantown | — | ● ACTIVE |
| OBOmnis Building Technologies, LLC | Morgantown | — | ● ACTIVE |
Oyster Point Pharma, INC | Morgantown | — | ● ACTIVE |
Printer Supplies & More LLC | Huntington | — | ● ACTIVE |
Tanya a Pratt LLC | Daniels | — | ● ACTIVE |
Viatris Specialty LLC | Morgantown | — | ● ACTIVE |
Vimasco CORP | Nitro | — | ● ACTIVE |
| VLViridyn LLC | Falling Waters | — | ● ACTIVE |
| CPColumbia Paint CO. | Huntington | 1–19 | ◐ LIKELY ACTIVE |
| PAProcter and Gamble Tabler Station | Inwood | 500+ | ◐ LIKELY ACTIVE |
| SUStockmeier Urethanes Usa, INC | Clarksburg | 20–99 | ◐ LIKELY ACTIVE |
| APAdell Polymers, INC. | Petersburg | — | ◐ LIKELY ACTIVE |
| ATAlliant Techsystems Operations Llc, Allegany Ballistics | Rocket Center | — | ◐ LIKELY ACTIVE |
| APApg Polytech LLC | Apple Grove | 100–499 | ◐ LIKELY ACTIVE |
| BMBayer Materialscience | New Martinsville | — | ◐ LIKELY ACTIVE |
Braskem America Neal Plant | Kenova | — | ◐ LIKELY ACTIVE |
| EIEcolab INC | Martinsburg | — | ◐ LIKELY ACTIVE |
| KMKingsford Manufacturing Company, Beryl | Piedmont | — | ◐ LIKELY ACTIVE |
| SGSi Group INC - South Plant | Morgantown | — | ◐ LIKELY ACTIVE |
| SPStar Plastics, INC. | Millwood | 20–99 | ◐ LIKELY ACTIVE |
| SPStar Plastics, Llc, Ravenswood | Ravenswood | 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 |
| WNWestlake Natrium Llc, Westlake Natrium | Proctor | — | ◐ LIKELY ACTIVE |
| AIAc&s INC | Nitro | — | ◐ LIKELY ACTIVE |
| APApg Polytech, Llc, Apple Grove Plant | Apple Grove | — | ◐ LIKELY ACTIVE |
| ANAshland Neal Plant | Kenova | — | ◐ LIKELY ACTIVE |
| CICytec Industries, Inc., Willow Island | Willow Island | — | ◐ LIKELY ACTIVE |
| MSMpm Silicones LLC | Friendly | — | ◐ LIKELY ACTIVE |
| UTUnivation Technologies LLC - Catalyst Plant | South Charleston | — | ◐ LIKELY ACTIVE |
| ANAxens North America, INC | Belmont | — | ◇ UNVERIFIED |