On the Record · Clean Harbors
Clean Harbors subsidiaries, as it lists them
The subsidiaries Clean Harbors lists in its latest annual report, with the jurisdiction of each, linked to the filing.
Subsidiaries it lists
| Subsidiary | Jurisdiction |
|---|---|
| Ace/Allwaste Environmental Services of Indiana, LLC | Illinois |
| Altair Disposal Services, LLC | Delaware |
| Aquilex Finance LLC | Delaware |
| Aquilex Intermediate Corporate Holdings LLC | Delaware |
| Aquilex Intermediate Holdings LLC | Delaware |
| Aquilex LLC | Delaware |
| Baton Rouge Disposal, LLC | Delaware |
| Bridgeport Disposal, LLC | Delaware |
| CARBER Holdings, Inc. | Delaware |
| CB Canada Acquisition, Inc.* | Ontario |
| CB Canada Holdings, Inc.* | Ontario |
| CB US Holdings, Inc. | Delaware |
| CH International Holdings, LLC | Delaware |
| Clean Harbors Andover, LLC | Delaware |
| Clean Harbors Aragonite, LLC | Delaware |
| Clean Harbors Arizona, LLC | Delaware |
| Clean Harbors Baton Rouge, LLC | Delaware |
| Clean Harbors BDT, LLC | Delaware |
| Clean Harbors Buttonwillow, LLC | Delaware |
| Clean Harbors Canada, Inc.* | New Brunswick |
| Clean Harbors Caribe, Inc.* | Puerto Rico |
| Clean Harbors Chattanooga, LLC | Delaware |
| Clean Harbors Clive, LLC | Delaware |
| Clean Harbors Coffeyville, LLC | Delaware |
| Clean Harbors Colfax, LLC | Delaware |
| Clean Harbors Deer Park, LLC | Delaware |
| Clean Harbors Deer Trail, LLC | Delaware |
| Clean Harbors Development, LLC | Delaware |
| Clean Harbors Disposal Services, Inc. | Delaware |
| Clean Harbors El Dorado, LLC | Delaware |
| Clean Harbors Energy and Industrial Services Corp.* | Alberta |
| Clean Harbors Energy and Industrial Services LP* | Alberta |
| Clean Harbors Energy and Industrial Western Ltd.* | Alberta |
| Clean Harbors Energy Services, ULC* | Alberta |
| Clean Harbors Environmental Services, Inc. | Massachusetts |
| Clean Harbors Exploration Services, Inc. | Nevada |
| Clean Harbors Florida, LLC | Delaware |
| Clean Harbors Grassy Mountain, LLC | Delaware |
| Clean Harbors India LLP* | India |
| Clean Harbors Industrial Services Canada, Inc.* | Alberta |
| Clean Harbors Innu Environmental Services, Inc.* | Newfoundland |
| Clean Harbors Kansas, LLC | Delaware |
| Clean Harbors Kimball Realty, LLC | Delaware |
| Clean Harbors Kingston Facility Corporation | Massachusetts |
| Clean Harbors LaPorte, LLC | Delaware |
| Clean Harbors Laurel, LLC | Delaware |
| Clean Harbors Lodging Services LP* | Alberta |
| Clean Harbors Lodging Services, ULC* | Alberta |
| Clean Harbors Lone Mountain, LLC | Delaware |
| Clean Harbors Mercier, Inc.* | Quebec |
| Clean Harbors of Baltimore, Inc. (DE Corp.) | Delaware |
| Clean Harbors of Braintree, Inc. | Massachusetts |
| Clean Harbors of Connecticut, Inc. (DE) | Delaware |
| Clean Harbors Pecatonica, LLC | Delaware |
| Clean Harbors Production Services, ULC* | Alberta |
| Clean Harbors Quebec, Inc.* | Quebec |
| Clean Harbors Recycling Services of Chicago, LLC | Delaware |
| Clean Harbors Recycling Services of Ohio, LLC | Delaware |
| Clean Harbors Reidsville, LLC | Delaware |
| Clean Harbors San Jose, LLC | Delaware |
| Clean Harbors San Leon, Inc. | Delaware |
| Clean Harbors Services, Inc. | Massachusetts |
| Clean Harbors Surface Rentals Partnership* | Alberta |
| Clean Harbors Surface Rentals USA, Inc. | Delaware |
| Clean Harbors Surface Rentals, ULC* | Alberta |
| Clean Harbors Tennessee, LLC | Delaware |
| Clean Harbors Westmorland, LLC | Delaware |
| Clean Harbors White Castle, LLC | Delaware |
| Clean Harbors Wichita, LLC | Delaware |
| Clean Harbors Wilmington, LLC | Delaware |
| Clean Harbors, Inc. | Massachusetts |
| Cousins Waste Control, LLC | Ohio |
| Crowley Disposal, LLC | Delaware |
| Cyn Oil Corporation | Massachusetts |
| Disposal Properties, LLC | Delaware |
| Emerald Services, Inc. | Washington |
| Emergency Response and Training Solutions, LLC | Delaware |
| Environmental Management Alternatives, LLC | Delaware |
| Environmental Management Specialists, LLC | Delaware |
| EnviroSORT Inc.* | Alberta |
| Green View Technologies, Inc. | New Hampshire |
| GSX Disposal, LLC | Delaware |
| Hepaco Blocker, Inc. | Delaware |
| Hepaco GC, LLC | Delaware |
| Hepaco Holding, LLC | Delaware |
| Hepaco, LLC | Delaware |
| Hilliard Disposal, LLC | Delaware |
| HPC Industrial Group, LLC | Delaware |
| HPC Industrial Services, LLC | Delaware |
| HydroChem Canada ULC* | Alberta |
| Industrial Service Oil Company, Inc. | California |
| Jesco Industrial Service, LLC | Kentucky |
| Laidlaw Environmental Services de Mexico S.A. de C.V.* | Mexico |
| LJ Energy Services Intermediate Holding Corp. | Delaware |
| Lonestar Sylvan Inc.* | Federally Chartered |
| Lonestar Vacuum Inc.* | Alberta |
| Lonestar West Enterprises LLC | Oklahoma |
| Lonestar West Inc.* | Federally Chartered |
| Lonestar West Services LLC | Nevada |
| Murphy's Waste Oil Service, Inc. | Massachusetts |
| Noble Oil Services, Inc. | North Carolina |
| Northeast Casualty Insurance Company | Vermont |
| NTS, LLC | North Carolina |
| Philip Services/North Central, LLC | Iowa |
| Plaquemine Remediation Services, LLC | Delaware |
| PSC Industrial Holdings Corp. | Delaware |
| PSC Industrial Outsourcing of Michigan, LLC | Ohio |
| PSC Industrial Outsourcing, LP | Delaware |
| PSC Industrial, Inc. | Delaware |
| PSC LDAR Services, LLC | Delaware |
| Ricky's Oil & Environmental Services, LLC | Florida |
| RMF Aquilex Corp. | Delaware |
| Roebuck Disposal, LLC | Delaware |
| Rosemead Oil Products, Inc. | California |
| Safety-Kleen Canada Inc.* | New Brunswick |
| Safety-Kleen Envirosystems Company | California |
| Safety-Kleen Envirosystems Company of Puerto Rico, Inc. | Indiana |
| Safety-Kleen International, Inc. | Delaware |
| Safety-Kleen of California, Inc. | California |
| Safety-Kleen Systems, Inc. | Wisconsin |
| Safety-Kleen, Inc. | Delaware |
| Sawyer Disposal Services, LLC | Delaware |
| Seaport Environmental, LLC | Delaware |
| Service Chemical, LLC | Delaware |
| SK D'Incineration Inc.* | Quebec |
| Spring Grove Resource Recovery, Inc. | Delaware |
| Synergy Hydrocarbon Recovery, LLC | Florida |
| Synergy Recycling of Central Florida, LLC | Georgia |
| Synergy Recycling, LLC | Florida |
| The Solvents Recovery Service of New Jersey, Inc. | New Jersey |
| Thermo Fluids Inc. | Delaware |
| Thompson Industrial Services, LLC | North Carolina |
| Tri-vax Enterprises Ltd.* | Alberta |
| Tulsa Disposal, LLC | Delaware |
| Versant Energy Services, Inc. | Delaware |
| Versant Energy Services, LP* | Alberta |
From Exhibit 21 of the 10-K for 2025. Companies must list their significant subsidiaries there and may leave out smaller ones, so this is the company’s own list, not every entity it owns.
Read from Clean Harbors’s annual reports (10-K for 2025, 10-K for 2024, 10-K for 2023) and the financial data it files with the SEC, as of 2026-02-18. Every quotation is word for word from the filing linked beside it; how these pages are built and checked. The full record is in its company data sheet.