H-o-h Water Technology, INC. | Germantown | WI | — | ◇ UNVERIFIED |
| HSHoku Scientific, INC. | Kapolei | HI | — | ◇ UNVERIFIED |
| HSHoldens Screen Supply CORP | New York | NY | — | ◇ UNVERIFIED |
| HHHoliday Housewares | Leominster | MA | — | ◇ UNVERIFIED |
| HCHolland Company Bators Garage | Adams | MA | — | ◇ UNVERIFIED |
| HCHolland Company Garage | North Adams | MA | — | ◇ UNVERIFIED |
| HDHome Depot 4010 | Hillsboro | OR | — | ◇ UNVERIFIED |
| HEHoneywell Electronic Chemicals LLC | Chandler | AZ | — | ◇ UNVERIFIED |
| HIHoneywell INC | Chester | VA | — | ◇ UNVERIFIED |
| HIHoneywell, INC. | Arvada | CO | — | ◇ UNVERIFIED |
| HIHoneywell International INC - Chesterfield | Chester | VA | — | ◇ UNVERIFIED |
| HIHoneywell International Inc-claymont | Claymont | DE | — | ◇ UNVERIFIED |
| HPHoneywell Pmt | Baton Rouge | LA | — | ◇ UNVERIFIED |
| HCHopkins Chemical | Rome | GA | — | ◇ UNVERIFIED |
| HCHorsehead CORP - Monaca Smelter | Monaca | PA | — | ◇ UNVERIFIED |
| HHostmann-steinberg | Louisville | KY | — | ◇ UNVERIFIED |
| HNHot N Glassy INC | Carson | CA | — | ◇ UNVERIFIED |
| HWHot Wax Distributors | Stanton | CA | — | ◇ UNVERIFIED |
| HLHouy Lim | Montclair | CA | — | ◇ UNVERIFIED |
| HIHoward Industries INC | Columbus | OH | — | ◇ UNVERIFIED |
| HHHpc Holdings, INC | North Augusta | SC | — | ◇ UNVERIFIED |
| HSHppe Surfactant Spill | Columbus | GA | — | ◇ UNVERIFIED |
| H7Hrs - 780 Montague | San Jose | CA | — | ◇ UNVERIFIED |
| HRH R Technologies, INC | Madison Heights | MI | — | ◇ UNVERIFIED |
| HUHubergroup USA INC | Chino | CA | — | ◇ UNVERIFIED |
| HPHuey P Stockstill Llc, Picayune Ready Mix and Asphalt Plant | Picayune | MS | — | ◇ UNVERIFIED |
| HJHugh J Resins CO INC | Long Beach | CA | — | ◇ UNVERIFIED |
| HFHuntington Foam | Coraopolis | PA | — | ◇ UNVERIFIED |
| HHuntsman | Ringwood | IL | — | ◇ UNVERIFIED |
Huntsman Advanced Materials Americas, Ll | Los Angeles | CA | — | ◇ UNVERIFIED |
Huntsman Advanced Materials Americas, LLC. | Maple Shade | NJ | — | ◇ UNVERIFIED |
| HAHuntsman Advanced Materials, LLC | Salt Lake City | UT | — | ◇ UNVERIFIED |
| HAHuntsman Advanced Materials - Mcintosh Plant | Mc Intosh | AL | — | ◇ UNVERIFIED |
| HCHuntsman Corporation | Dalton | GA | — | ◇ UNVERIFIED |
| HCHuntsman Corporation | Ontario | CA | — | ◇ UNVERIFIED |
Huntsman International | Stockton | CA | — | ◇ UNVERIFIED |
Huntsman International - Lohnpack Site | Hamilton | NJ | — | ◇ UNVERIFIED |
| HMHuntsman - Mcintosh Operations | Mc Intosh | AL | — | ◇ UNVERIFIED |
| HPHuntsman Polymers | Odessa | TX | — | ◇ UNVERIFIED |
| HAHwtg - Apopka | Apopka | FL | — | ◇ UNVERIFIED |
| HCHydrite Chemical CO | Wausau | WI | — | ◇ UNVERIFIED |
| HPHydroseal Polymers INC | Riverside | CA | — | ◇ UNVERIFIED |
| HSHydro Spa LLC | Ocala | FL | — | ◇ UNVERIFIED |
| HCHyperion Catalysis INC | Cambridge | MA | — | ◇ UNVERIFIED |
| INI-5 North On-ramp at Exit 27 | Kalama | WA | — | ◇ UNVERIFIED |
| IAIbc Advanced Technologies, INC. V-1 | Orem | UT | — | ◇ UNVERIFIED |
| IAIbc Advanced Technologies, INC. Vineyard | Vineyard | UT | — | ◇ UNVERIFIED |
| IPIcl Performance Products LP | Carteret | NJ | — | ◇ UNVERIFIED |
| IPIcl Performance Products, LP | Santa Rosa | CA | — | ◇ UNVERIFIED |
| ISIcl Specialty Products INC Carondelet Plant | Saint Louis | MO | — | ◇ UNVERIFIED |