Public Company Industrial Services

Clean Harbors

Norwell, Massachusetts, United States

Clean Harbors provides environmental and industrial services including hazardous waste management, emergency spill response, industrial cleaning and maintenance, and recycling services (including related Safety-Kleen offerings).

Focus Areas
hazardous waste management, emergency spill response, industrial cleaning and maintenance

Tracked deals

4

4 tracked deals across 2023-2026.

Recent pace

3

3 tracked deals announced in the last 12 months.

Deal mix

Buyout

4 buyout

Clean Harbors Acquisition Volume by Year

Last 2 years

Acquisition volume by year Annual acquisition counts for the last 2 years for Clean Harbors. 1 2023 ~4 est. 3 2026
Actual Full-year estimate

Supporting Data

Recent Transactions

  • October 5, 2026
    Buyer
    Clean Harbors, Inc.
    Target
    ES&H
    Type
    Buyout

    Clean Harbors completed its acquisition of ES&H, a Louisiana-based regional provider of environmental and emergency-response services. The acquisition adds Gulf-region branches and maritime and on-water response capabilities, complementing and expanding Clean Harbors’ Field Services presence.

  • Buyer
    Clean Harbors, Inc.
    Target
    EnviroServe
    Seller
    An affiliate of One Rock Capital Partners, LLC
    Type
    Buyout

    Clean Harbors agreed to acquire EnviroServe from an affiliate of One Rock Capital Partners for $470 million in cash. The deal adds EnviroServe’s environmental and waste-management network, recurring customer base, and rail and emergency-response capabilities; Clean Harbors completed the acquisition on October 5, 2026.

  • Buyer
    Clean Harbors, Inc.
    Target
    Terra Nova Solutions
    Type
    Buyout

    Clean Harbors, Inc. announced the all-cash $225 million acquisition of Terra Nova Solutions, a regional provider of hazardous and non-hazardous waste services. The deal adds five operating sites and complementary capabilities (including wastewater treatment, solidification, drum collection, tank cleaning, and vacuum services) to expand Clean Harbors’ Technical Services and Field Services footprint across the Carolinas.

  • Buyer
    Clean Harbors, Inc.
    Target
    Thompson Industrial Services
    Seller
    Reynolda Equity Partners
    Type
    Buyout

    Clean Harbors, Inc. acquired Thompson Industrial Services from Reynolda Equity Partners, expanding Clean Harbors' industrial cleaning and maintenance capabilities and adding density across the Southeastern United States. Thompson, a leading provider of hydroblasting, vacuuming and automated industrial cleaning solutions serving paper, mining, power and chemical customers, grew substantially under REP and will bring entrenched, recurring customer relationships to Clean Harbors' platform.

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