Clean Harbors is the largest hazardous waste disposal company in North America, operating more than 400 service locations and over 100 disposal facilities across the United States, Canada, Mexico, and Puerto Rico. Founded in 1980 as a single-truck tank cleaning operation near Boston, the company has expanded to serve a majority of Fortune 500 companies across chemical, manufacturing, energy, healthcare, refinery, transportation, utilities, and pharmaceutical sectors.
The company provides comprehensive environmental and industrial services spanning hazardous and non-hazardous waste management, emergency spill response, industrial cleaning and maintenance, and recycling. Clean Harbors is also the largest re-refiner of used oil in North America. Through its Safety-Kleen subsidiary, it operates closed-loop recycling systems for used oil and cleaning solvents, emphasising the reclamation and reuse of materials rather than simple disposal.
Now publicly traded on the NYSE under the ticker CLH, Clean Harbors handles complex environmental challenges for industrial operations, managing everything from routine waste streams to emergency response situations. The company's scale and infrastructure allow it to serve clients across multiple sectors simultaneously, combining hazardous material expertise with recycling and resource recovery capabilities.