Cleanzine: your weekly cleaning and hygiene industry newsletter 15th October 2026 Issue no. 1230
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Clean Harbors completes acquisitions of EnviroServe and ES&H
Environmental and industrial services specialist Clean Harbors, which operates throughout North America, has completed its acquisitions of EnviroServe (pictured), a national provider of environmental and waste management services, and ES&H, a leading regional provider of environmental and emergency response services in the US Gulf region.
The two transactions were completed for a combined purchase price of $775 million, funded through available cash and a recently completed $600 million senior notes offering.
On a combined basis, EnviroServe and ES&H are expected to generate annual revenues of approximately $340 million with post-synergised annual Adjusted EBITDA (earnings before interest, taxes, depreciation and amortisation) of approximately $87 million, which equates to a post-synergy acquisition multiple of 8.9 times adjusted EBITDAys
"The acquisitions of EnviroServe and ES&H greatly enhance our Technical Services and Field Services businesses," says Clean Harbors’ co-chief executive officer Eric Gerstenberg.
"EnviroServe's strategically located, 10-day transfer facilities expand our technical services collection capabilities and create additional opportunities to leverage more volume into our disposal and recycling network. Its emergency response assets and rail cleaning facilities amplify our current field services offerings. At the same time, ES&H, a recognised leader in the Gulf, deepens our field services presence and expands our response capabilities in one of North America's most important petrochemical and marine corridors.
“The company is recognised for its on-water emergency response expertise, earning the US Coast Guard's highest Oil Spill Response Organisation (OSRO) classification.
“Moreover, both companies are strong cultural fits with Clean Harbors sharing our deep commitment to safety, compliance and service excellence."
Mike Battles, co-chief executive officer of Clean Harbors, adds:
"We expect to generate substantial shareholder value from these transactions, particularly given their post-synergy multiples and cross-selling potential. EnviroServe provides an attractive opportunity to drive valuable volumes into our highly leverageable network of disposal and recycling locations. ES&H brings a high-margin response business, including its Forefront emergency readiness and training offering.
“These acquisitions align well with our capital allocation philosophy of prioritising profitable growth in our environmental services segment. We're excited about the growth prospects for both of these businesses within the Clean Harbors organisation."
Headquartered in Sandy, Utah, EnviroServe serves nearly 2,500 customers through a network of 40 locations. Its national footprint is supported by permits in 48 states, which include 18, 10-day transfer facilities, several solidification facilities and railcar cleaning locations. Offerings include remediation, rail services, industrial cleaning and emergency response, as well as hazardous and non-hazardous waste transportation and processing.
Headquartered in Louisiana, ES&H operates 13 service branches, primarily in coastal markets, providing maritime capabilities that complement and expand Clean Harbors' existing service offerings. The company's core services include emergency response, field services and environmental management services for customers across multiple industries.
Clean Harbors already serves a majority of Fortune 500 companies and its customer base spans a number of industries, including chemical, manufacturing and refining, as well as numerous government agencies. These customers rely on Clean Harbors to deliver a broad range of services such as end-to-end hazardous waste management, emergency spill response, industrial cleaning and maintenance and recycling services. Through its Safety-Kleen subsidiary, Clean Harbors also is a leading provider of parts washers and environmental services to commercial, industrial and automotive customers, as well as North America's largest re-refiner and recycler of used oil. Founded in 1980 and based in Massachusetts, it operates in Canada, Mexico, Puerto Rico and India as well as the US.
8th October 2026