Environmental and industrial services company Clean Harbors (NYSE: CLH) reported Q3 2026 results beating Wall Street’s revenue expectations, with sales up 20.7% year on year to $1.87 billion. Its non-GAAP profit of $3.93 per share was 22% above analysts’ consensus estimates.
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Clean Harbors (CLH) Q3 2026 highlights:
- Revenue $1.87 billion vs S&P analysts’ estimates of $1.73 billion (20.7% year-on-year growth, 8.3% beat)
- Adjusted EPS $3.93 vs S&P analysts’ estimates of $3.22 (22% beat)
- Adjusted EBITDA $456.1 million vs analyst estimates of $409.1 million (24.4% margin, 11.5% beat)
- EBITDA guidance $1.46 billion at the midpoint for the full year, above analyst estimates of $1.42 billion
- Operating margin 17%, up from 12.5% in the same quarter last year
- Market capitalization $16.54 billion
StockStory’s take
Clean Harbors delivered third quarter results that surpassed Wall Street’s expectations, driven by broad-based growth across both its Environmental Services and Safety-Kleen Sustainable Solutions segments. Management attributed outperformance to a surge in emergency response activity, notably a significant warehouse fire clean-up, as well as sustained demand for refined oil products amid tight global supply. Co-CEO Eric Gerstenberg highlighted that “Field Services revenue was up more than 70% compared to a year ago,” while CFO Eric Dugas pointed to “record quarterly margin in our company’s history.” The company also reported strong progress in integrating recent acquisitions and maintaining industry-leading safety performance.
Looking ahead, Clean Harbors’ guidance reflects expectations for continued volume growth in waste collection, ongoing momentum in PFAS remediation projects, and further gains from reshoring contracts. Management emphasized several strategic initiatives, including expanded data center services, the launch of a major Los Angeles hub, and the integration of recent acquisitions. As Gerstenberg noted, “we see several tailwinds in our ES segment to be excited about,” while Dugas cautioned that future results in the oil re-refining business could be affected by commodity price volatility. The upcoming CEO transition is expected to be seamless, with leadership reiterating their commitment to disciplined capital allocation and margin improvement.
Key insights from management’s remarks
Management credited the quarter’s strength to a major emergency response project, robust pricing in refined products, and successful execution of strategic growth initiatives, including M&A and expansion into new service lines.
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Emergency response revenue spike: A large-scale warehouse fire in Los Angeles contributed approximately $120 million in revenue, leading to a 70% year-over-year increase in Field Services. Management highlighted this event as a demonstration of Clean Harbors’ rapid mobilization and operational reach in North America.
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Refined products demand: Tight global supply of base oil and lubricants supported exceptional results in the Safety-Kleen Sustainable Solutions segment. The company increased production of higher-margin Group III base oil by 20% year-over-year and expanded blended direct gallon sales, improving overall segment profitability.
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PFAS remediation momentum: Clean Harbors’ PFAS (per- and polyfluoroalkyl substances) related revenue grew by roughly 30% and is increasingly diversified across industrial, municipal water treatment, and remediation projects. Management noted continued legislative support as a future tailwind for this business line.
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Strategic M&A integration: Recent acquisitions of ES&H and EnviroServe are progressing well, with early synergy realization. These deals expanded Clean Harbors’ reach and service offerings, especially in emergency response and waste management.
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Los Angeles hub investment: The company closed on a $55 million property to consolidate six smaller branches into a major West Coast hub, aiming to unlock operational efficiencies, cross-sell opportunities, and support further regional growth. This is the largest such hub in Clean Harbors’ network to date.
Drivers of future performance
Clean Harbors’ outlook is driven by anticipated growth in regulated waste streams, further integration of acquisitions, and ongoing investment in high-demand services such as PFAS remediation and data centers.
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Reshoring and contract wins: Management expects continued growth from U.S. manufacturing reshoring, highlighted by a 10-year, $600 million contract now underway. This is expected to drive sustained demand for waste and recycling services.
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Data center and PFAS expansion: The company is accelerating capital deployment in data center-related services, increasing its dedicated investment to $70 million based on early commercial traction. PFAS opportunities are expected to expand further, with about one-third of PFAS revenue now coming from water treatment projects.
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Commodity and integration risks: Clean Harbors is monitoring potential margin headwinds from commodity price normalization in its oil re-refining business and the integration of recent acquisitions. Management noted that large-scale emergency response projects and further margin expansion remain upside opportunities but are challenging to forecast.
Catalysts in upcoming quarters
In coming quarters, the StockStory team will closely monitor (1) the ramp-up and cross-segment impact of the new Los Angeles hub and integration of ES&H and EnviroServe, (2) continued PFAS revenue growth and legislative developments affecting environmental regulations, and (3) the pace at which data center and reshoring-driven contracts translate into recurring revenue. Execution against these milestones will be key for sustained margin improvement and free cash flow generation.
Clean Harbors currently trades at $313.39, in line with $312.92 just before the earnings. At this price, is it a buy or sell? Find out in our full research report (it’s free).
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