Cash-Rich Clean Harbors Goes Shopping for Growth

A $509m cash haul puts the waste handler in position to expand its North American network as PFAS regulation and reshoring drive demand

20 Feb 2026

Clean Harbors closed 2025 with its strongest financial performance on record, generating $509.3 million in adjusted free cash flow and surpassing $6 billion in annual revenue for the first time. The results, reported on 18 February 2026, included 15 consecutive quarters of year-over-year margin expansion in its Environmental Services segment, which handles hazardous materials collection, transport, and treatment across North America.

The company is directing that cash into two near-term capital commitments. It has signed an agreement to acquire five facilities from Depot Connect International for approximately $130 million, adding sites in Ohio, Louisiana, and Texas with capabilities including waste handling, tank cleaning, railcar cleaning, and wastewater treatment. Separately, Clean Harbors has committed $50 million to expand its vacuum truck fleet, a move management linked to anticipated volume growth from industrial and hazardous materials customers. Both transactions are expected to close or deploy in the first half of 2026.

A regulatory tailwind is also shaping the company's medium-term outlook. Clean Harbors projects its PFAS remediation business, which treats per- and polyfluoroalkyl substances, a class of persistent industrial chemicals, will grow by roughly 20% in 2026. In December 2025, it signed a three-year, $110 million contract for PFAS water filtration work at a US military installation in Hawaii. Language in the National Defense Authorization Act now requires the Pentagon to address PFAS contamination across more than 700 military sites, a mandate that is expected to generate a sustained pipeline of transport and treatment work for carriers with certified hazmat infrastructure.

Management also cited the reshoring of domestic manufacturing as a structural growth driver, given the compliance-intensive waste streams such facilities produce.

For the full year 2026, Clean Harbors is guiding for adjusted EBITDA of between $1.20 billion and $1.26 billion, with adjusted free cash flow projected between $480 million and $540 million. Executives described the acquisitions pipeline as active, leaving open the prospect of further regional deals. Whether the pace of regulatory enforcement and industrial relocation will sustain that guidance remains to be seen.