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One Rock Capital Partners completes $470m sale of EnviroServe to Clean Harbors

Reported by Pehub
Oct 5, 2026· 1 min read
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Key Takeaways
  • • One Rock Capital Partners completed the sale of EnviroServe to Clean Harbors for $470 million, marking a significant exit in the environmental services sector.
  • • EnviroServe operates across the United States with approximately 2,400 customers, providing environmental and waste management services.
  • • The transaction expands Clean Harbors' footprint in the environmental services market through the acquisition of an established operator with a diversified customer base.
Summary
One Rock Capital Partners has successfully closed the $470 million sale of EnviroServe to Clean Harbors, completing a transaction in the environmental and waste management services sector. EnviroServe brings to Clean Harbors a substantial customer portfolio of approximately 2,400 accounts distributed across operating locations throughout the United States.

The acquisition represents Clean Harbors' continued expansion in the environmental services market, adding operational capacity and geographic reach to its existing platform. EnviroServe's service offerings in environmental and waste management align with Clean Harbors' core business operations, positioning the combined entity to serve a broader customer base across multiple regions and service categories.

This transaction reflects continued consolidation activity within the environmental services industry, where strategic buyers seek to enhance scale and market presence through add-on acquisitions of established operators with meaningful customer relationships.

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Sources

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AlphaMaven summarised this story from the reporting below. Each link opens the original article.

Pehub One Rock Capital Partners completes $470m sale of EnviroServe to Clean Harbors