Key Takeaways
- • Clean Harbors Inc. announced a $470 million all-cash acquisition of EnviroServe, an environmental and waste management services company currently owned by One Rock Capital Partners.
- • The transaction represents Clean Harbors' strategic expansion into waste management and environmental services, consolidating two established players in the industrial services sector.
- • One Rock Capital Partners divests EnviroServe after a period of private equity ownership, marking an exit for the investment firm.
- • Legal counsel included Davis Malm & D'Agostine PC representing Clean Harbors and Latham & Watkins LLP advising EnviroServe on the transaction.
- • The deal closed on August 12, 2026, and signals ongoing consolidation activity within the environmental services and waste management industry.
Summary
Clean Harbors Inc., an environmental and industrial services provider, has agreed to acquire EnviroServe, a waste management and environmental services company, from an affiliate of One Rock Capital Partners in an all-cash transaction valued at $470 million. The transaction was announced on Wednesday, August 12, 2026, reflecting continued consolidation within the environmental services sector.
The acquisition positions Clean Harbors to expand its service offerings and market footprint in waste management and environmental remediation. EnviroServe, which had been held by One Rock Capital Partners, represents a strategic asset for the buyer given its established operations and customer base in the environmental services market. One Rock Capital's decision to divest the company marks a liquidity event for the private equity firm and completes its ownership cycle of the business.
The transaction was facilitated by prominent legal counsel: Davis Malm & D'Agostine PC advised Clean Harbors on the acquisition, while Latham & Watkins LLP represented EnviroServe. The involvement of these established legal firms reflects the complexity and scale of the transaction.
The all-cash deal structure provides certainty of closing for both parties and demonstrates Clean Harbors' financial capacity to fund the acquisition without contingent payments or earnout provisions. The $470 million valuation represents a significant commitment by Clean Harbors to acquire complementary waste management and environmental service capabilities.
The acquisition positions Clean Harbors to expand its service offerings and market footprint in waste management and environmental remediation. EnviroServe, which had been held by One Rock Capital Partners, represents a strategic asset for the buyer given its established operations and customer base in the environmental services market. One Rock Capital's decision to divest the company marks a liquidity event for the private equity firm and completes its ownership cycle of the business.
The transaction was facilitated by prominent legal counsel: Davis Malm & D'Agostine PC advised Clean Harbors on the acquisition, while Latham & Watkins LLP represented EnviroServe. The involvement of these established legal firms reflects the complexity and scale of the transaction.
The all-cash deal structure provides certainty of closing for both parties and demonstrates Clean Harbors' financial capacity to fund the acquisition without contingent payments or earnout provisions. The $470 million valuation represents a significant commitment by Clean Harbors to acquire complementary waste management and environmental service capabilities.
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