How many acquisitions has Clean Harbors made so far?

Clean Harbors has completed 13 acquisitions so far, with an average acquisition amount of $356M.

Which countries does Clean Harbors usually acquire in?

Clean Harbors has made acquisitions in 3 countries with the most activity in United States and Australia.

Which is Clean Harbors' latest acquisition?

Clean Harbors's most recent acquisition is EnviroServe, a Provider of railroad services & AAR repair services, acquired in August 2026.

List of 13 Acquisitions by Clean Harbors (Nov 2026)

Clean Harbors has made a total of 13 acquisitions. These were completed across United States, Australia, and Canada, covering 4 sectors including Waste & Water Management, Solar Energy, and Auto Components. Peak acquisition activity occurred in 2012 and 2026 with 2 acquisitions each, and 2024 with 1. The average number of acquisitions per year for the 2020–2025 period is 0.4, and 2 acquisitions were completed in the current calendar year. The most recent acquisition is EnviroServe, a Cleveland-based provider of railroad and AAR repair services founded in 1990, which was acquired in August 2026.

Here's the year on year acquisition history of Clean Harbors:

Number of Total Acquisitions

Year	# Acquisitions
2026	2
2024	1
2021	1
2017	1
2016	1
2015	1
2013	1
2012	2
2011	1
2009	1
1989	1

View all Acquisitions by Clean Harbors

Recent acquisitions by Clean Harbors

Clean Harbors's most recent acquisition - EnviroServe is a Provider of railroad services & AAR repair services, founded in 1990 and located in Cleveland. Clean Harbors acquired it in August 2026 for a price of $*****.

Here is the list of all acquisitions by Clean Harbors sorted by the latest acquisition date:

Acquired on	Acquired Company	Acquisition Price	Facilitators	Stake Acquired	Acquisition Multiple
Aug 19, 2026	EnviroServe	wekd	djcn	17	673
Jul 17, 2026	Chambers Equity Financial	amtj	sxjm	20	290
Feb 06, 2024	HEPACO	ykvb	g{ob	65	527
Aug 04, 2021	HydroChemPSC	irmn	ijmq	72	262
May 11, 2017	Lonestar West	udhz	yrbc	44	498