| YCYes Clean Hydrogen LLC | Berlin | — | ◐ LIKELY ACTIVE |
| MLMetabiome, LLC | New Haven | — | ◐ LIKELY ACTIVE |
| 5I50 Inwood Road, Henkel Corporation | Rocky Hill | — | ◇ UNVERIFIED |
| AUAllnex Usa, INC Formerly Cytec Industries INC | Wallingford | — | ◇ UNVERIFIED |
| APAmerican Plastic Products, INC. | Waterbury | — | ◇ UNVERIFIED |
| ASAmericas Styrenics, LLC | Gales Ferry | — | ◇ UNVERIFIED |
| ASAmericas Styrenics, LLC | Ledyard | — | ◇ UNVERIFIED |
| AIAnmar International, LTD | Bridgeport | — | ◇ UNVERIFIED |
 Austin Powder Company | Sterling | — | ◇ UNVERIFIED |
| BUByk USA INC | Wallingford | — | ◇ UNVERIFIED |
| CCCaprine Creations LLC | Salem | — | ◇ UNVERIFIED |
| CFConnecticut Fire Equipment, INC. | Putnam | — | ◇ UNVERIFIED |
| CPCt Powdercoating | Norwalk | — | ◇ UNVERIFIED |
| DNDetotec North America, INC. | Sterling | — | ◇ UNVERIFIED |
| DCDow Chemical CO | Gales Ferry | — | ◇ UNVERIFIED |
| ETEastern Tech Company | Milford | — | ◇ UNVERIFIED |
| ECEnsign-bickford CO | Simsbury | — | ◇ UNVERIFIED |
| FLFaria Limited, LLC | New London | — | ◇ UNVERIFIED |
| FLFlo-tech, LLC | Middletown | — | ◇ UNVERIFIED |
| FPFlow Polymers INC | Stratford | — | ◇ UNVERIFIED |
| GEGreystone Enterprises INC | Fairfield | — | ◇ UNVERIFIED |
| HRHampford Research INC | Stratford | — | ◇ UNVERIFIED |
| HCHenkel CORP | Trumbull | — | ◇ UNVERIFIED |
| HCHenry CO #tq3 | Fairfield | — | ◇ UNVERIFIED |
| HKH Krevit & Company INC | New Haven | — | ◇ UNVERIFIED |
| JNJSS Naugatuck, LLC | Naugatuck | — | ◇ UNVERIFIED |
| KIKing Inds INC | Norwalk | — | ◇ UNVERIFIED |
| LCLNA Corp. | Glastonbury | — | ◇ UNVERIFIED |
| MMMetamorphic Materials INC | Winsted | — | ◇ UNVERIFIED |
| MLMilbar Labs, INC. | East Haven | — | ◇ UNVERIFIED |
| NCNorwalk, Ct | Norwalk | — | ◇ UNVERIFIED |
| OIOxford Inustries of Connecticut, INC. | New Britain | — | ◇ UNVERIFIED |
| PSP2 Sciences INC. | Naugatuck | — | ◇ UNVERIFIED |
| PIPfizer INC (formerly Pfizer Incorporated, Manufacturing and Research) | Groton | — | ◇ UNVERIFIED |
| PIPraxair INC Plant 873 | Suffield | — | ◇ UNVERIFIED |
| PPProrez Performance Resins and Coatings L | South Glastonbury | — | ◇ UNVERIFIED |
| PPProrez Performance Resins and Coatings L | Rocky Hill | — | ◇ UNVERIFIED |
| PSProtein Sciences CORP | Meriden | — | ◇ UNVERIFIED |
| RIRapid Industries Inc. | Essex | — | ◇ UNVERIFIED |
| RSResin Solutions LLC (formerly Total Petrochemical and Refining) | Stratford | — | ◇ UNVERIFIED |
| RGR & G Carting & Recycling, LLC | Southington | — | ◇ UNVERIFIED |
| RTRist/ama Truck Terminal | North Branford | — | ◇ UNVERIFIED |
| RMRose Mill Holdings LLC | Windsor Locks | — | ◇ UNVERIFIED |
| RRRoss & Roberts INC | Stratford | — | ◇ UNVERIFIED |
| RCRsa CORP | Danbury | — | ◇ UNVERIFIED |
| SKSafety Kleen a Clean Harbors Company | Portland | — | ◇ UNVERIFIED |
 Sca Pharmaceuticals LLC | Windsor | — | ◇ UNVERIFIED |
| SISeals-It, Inc. | Ellington | — | ◇ UNVERIFIED |
| SSSimoniz Saniclean, LLC | Rocky Hill | — | ◇ UNVERIFIED |
| SISoltec, INC. | Bethel | — | ◇ UNVERIFIED |
