Clean Harbors, Inc. CLH

CLH Company Overview

Clean Harbors, Inc. is a leading provider of environmental and industrial services, operating primarily in the environmental services, hazardous waste management, and industrial services industries. The company delivers end-to-end solutions that include waste collection, treatment, recycling, disposal, emergency response, and industrial cleaning. Its core revenue drivers are long-term waste service contracts, disposal volumes at owned facilities, and recurring service relationships with industrial and governmental customers.

The company serves a diversified customer base across the energy, chemical manufacturing, healthcare, utilities, transportation, and government sectors. A key strategic advantage is its vertically integrated asset network, which includes hazardous waste incinerators, landfills, transfer stations, and re-refineries, creating high barriers to entry. Clean Harbors was founded in 1980 and expanded significantly through organic growth and acquisitions, most notably the acquisition of Safety-Kleen Systems, Inc. in 2012, which materially broadened its service offerings and customer reach.