Clean Harbors

Clean Harbors, Inc., headquartered in Norwell, Massachusetts, is a provider of waste management and industrial services for commercial customers, specializing in the collection, transportation, treatment and disposal of hazardous waste, but also offering services for non-hazardous waste. The company has 870 operating locations in 630 properties in the U.S. and Canada including a network of over 100 waste disposal facilities such as incinerators, landfills (seven hazardous waste landfills and two non-hazardous waste landfills), treatment, storage and disposal facilities. It also owns Safety-Kleen, the largest re-refiner and recycler of used oil in North America. In 2024, the company received 91% of its revenues in the United States and 9% of its revenues in Canada. In 2024, the company's revenues primarily came from the following industries: chemical industry (15%), manufacturing (14%), refineries (13%), automotive industry (8%), utilities (6%), base and blended oils (5%), oil and gas industry (5%), transportation (4%), government (4%) and retail (3%).

The company is ranked 586th on the Fortune 500.

Clean Harbors was founded in 1980 in Brockton, Massachusetts, by Alan McKim as a four-person tank cleaning business.

In November 1987, the company became a public company via an initial public offering.

In 1984, the company removed 130,000 gallons of fuel oil from the tanker Eldia, which became the largest ship to have been beached off Cape Cod.