Clean Harbors completes acquisitions of EnviroServe and ES&H
Clean Harbors (CLH) completed acquisitions of EnviroServe and ES&H for $775M. The deals, funded via cash and debt, add $340M in annual revenue and $87M in Adjusted EBITDA, with a post-synergy multiple of 8.9X. EnviroServe expands waste handling, while ES&H strengthens emergency response in the Gulf region, according to the company.
How this was made

The 30-second read
Why it matters
The $775 million deal adds significant revenue and EBITDA, likely improving earnings outlook and supporting a higher valuation.
Market read
The acquisition is material for CLH and may influence peer valuations in the environmental services space.
What to watch
Potential regulatory scrutiny of the Gulf emergency‑response assets and the impact of higher debt on credit metrics.
Background
Clean Harbors (NYSE: CLH) is a leading provider of environmental and industrial services in North America.
Ticker impact
Clean Harbors announced completion of its $775 million acquisitions of EnviroServe and ES&H, adding $340 million revenue and $87 million adjusted EBITDA.
potential modest upside as investors price in synergies and expanded service footprint
Deal size is material for a mid‑cap, first‑report disclosure; integration benefits are clear and financing is via cash and existing senior notes.
Market effects
Strengthens the environmental services sector by consolidating waste‑handling capabilities.
Boosts service capacity in the U.S. Gulf region, a key petrochemical hub.
Limited to North American industrial services; no direct global macro effect.
Counterpoint
Integration risk and increased leverage could pressure the stock if synergies fall short.
Key entities
- CompanyClean Harbors, Inc.
Acquirer, US‑listed environmental services firm.
- CompanyEnviroServe
National waste‑management provider acquired by Clean Harbors.
- CompanyES&H
Regional emergency‑response provider acquired by Clean Harbors.

