CleanHarbors (CLH) Q2 2025 earnings review
ES Segment Powers Record Quarter; Strong Guidance Signals Acceleration
Clean Harbors reported record Q2 results that beat expectations, driven entirely by the strength of its core Environmental Services (ES) segment. ES delivered its 13th consecutive quarter of year-over-year EBITDA margin improvement, offsetting a significant 26% profit decline in the commodity-sensitive Safety-Kleen Sustainability Solutions (SKSS) segment. While total revenue was flat, Adjusted EBITDA grew 3% to a record $336.2 million, and margins expanded by 60 basis points. Management's confidence is high, reaffirming strong full-year guidance and issuing a bullish Q3 forecast for 9-12% EBITDA growth, indicating a significant acceleration in the second half of the year.
🐂 Bull Case
The Environmental Services segment is firing on all cylinders with robust demand, strong pricing power, and expanding margins, proving its resilience even in a mixed industrial economy.
Management's guidance for Q3 Adjusted EBITDA growth of 9-12% represents a significant step-up from the 3% growth in Q2, signaling strong momentum and confidence in the second half of the year.
The company delivered a record $133 million in Q2 adjusted free cash flow, a 58% increase YoY, demonstrating excellent operational efficiency and balance sheet strength.
🐻 Bear Case
The SKSS business remains highly volatile and dependent on commodity prices. Its 26% YoY profit decline continues to weigh on overall corporate results, masking the strength of the core business.
While the company is outperforming, weakness in Industrial Services due to deferred customer maintenance and tariff uncertainty for some customers highlights sensitivity to the broader macro environment.
⚖️ Verdict: 🟢
Bullish. The exceptional, consistent performance and margin expansion in the core Environmental Services business—which constitutes the vast majority of profits—far outweighs the cyclical weakness in the smaller SKSS segment. The guidance for accelerating growth in Q3 provides a clear catalyst, suggesting the market is underappreciating the company's forward momentum.
Key Themes
Environmental Services: The Unstoppable Engine
The ES segment continues to be the primary growth driver, achieving its 13th consecutive quarter of year-over-year adjusted EBITDA margin improvement. In Q2, segment EBITDA grew 5% to $376.2M on 3% revenue growth, resulting in a stellar 28.3% margin. This performance was driven by strong demand for disposal assets, with incineration utilization at a high 89% (excluding the new Kimball facility) and mix-adjusted pricing up 7%. The segment's robust project pipeline and momentum from reshoring trends support a strong outlook.
SKSS Segment Remains a Significant Headwind
Despite management's narrative of 'stabilization' and results exceeding their internal expectations, the SKSS segment's performance continues to deteriorate on a year-over-year basis. Q2 segment EBITDA fell 26% to $38.3M, driven by lower base oil market pricing and reduced volumes sold. While the strategic shift to a 'Charge for Oil' (CFO) model is helping to mitigate damage, the segment remains a drag on consolidated results and is highly exposed to commodity price volatility.
PFAS Opportunity Heats Up
Management described PFAS remediation as a 'multibillion-dollar opportunity' where Clean Harbors is uniquely positioned with an end-to-end solution. Recent tests with the EPA demonstrated '6-9s of destruction' of PFAS compounds via their incinerators. With over 350 PFAS-related bills introduced across 39 states, the regulatory environment is accelerating, creating a substantial long-term growth catalyst independent of the broader economic cycle.
Strategic Capacity Expansion On Track
The new Kimball incinerator is ramping up successfully, processing over 10,000 tons in Q2 and helping the company gain network efficiencies. This additional capacity is critical to meeting strong customer demand, driven by reshoring and potential captive incinerator closures. The company is also investing in a new hub in Phoenix to replicate its successful Baltimore model and expand its processing and recycling capabilities.
Contradiction in Narrative vs. Data on SKSS Performance
Management described SKSS results as 'ahead of our expectations' and supported by 'waste oil collection strategies'. However, the segment's adjusted EBITDA declined 26% year-over-year. While it may have beaten internal forecasts, the steep decline suggests the underlying market challenges are more severe than the positive framing implies, representing a risk if market conditions do not improve.
Macro Outlook: Reshoring Tailwinds vs. Tariff Headwinds
Management sees a promising North American economic outlook driven by the 'funded reality' of reshoring, with customers expanding production and creating more demand. They acknowledge that near-term tariff uncertainty has impacted some customers but believe incentives to invest in American manufacturing will drive greater activity over the long term, creating a net positive macro backdrop.
Other KPIs
Up nearly 60% from $84.2 million in the prior year, marking a record for the second quarter. This strong performance was driven by higher earnings and lower net capital expenditures as the peak spending on the Kimball incinerator project has passed. This robust cash generation strengthens the balance sheet and provides ample flexibility for M&A and share repurchases.
Leverage improved sequentially and remains low, providing significant financial flexibility. With nearly $700 million in cash and short-term securities and no material debt maturities until 2027, the company is in an ideal position to pursue both organic growth projects and strategic M&A.
SG&A expenses decreased 70 basis points as a percentage of revenue compared to last year. This demonstrates disciplined cost control and operating leverage, contributing directly to the quarter's overall margin expansion.
Guidance
Accelerating. This guidance implies significant acceleration from the 2.6% YoY growth achieved in Q2 2025. The strong outlook is led by the core ES segment, which is guided to grow 10% to 14% in the quarter, as it laps an easier prior-year comparable and continues to execute on pricing and volume initiatives.
Stable. The company reiterated its full-year guidance, with the midpoint of $1.18 billion representing 6% annual growth. This reaffirmation, despite ongoing SKSS weakness, signals strong confidence in the ES segment's ability to deliver on its targets for the remainder of the year.
Stable. Guidance was also reaffirmed for free cash flow. The midpoint of $460 million represents a nearly 30% increase from 2024, driven by higher earnings and lower capital expenditures. This outlook underscores the business's strong cash-generating capabilities.