Clean Harbors (CLH) Earnings: Q3 2026 Results

The quarter ended September 30, 2026 and Clean Harbors published the results on October 28, 2026. Revenue and diluted EPS are shown against Q3 2025, the same quarter a year earlier, which takes seasonal swings out of the comparison.

• Segment figures are third-party revenues. Clean Harbors also reports direct revenues by segment, which move intersegment revenue between the two segments; on that basis Environmental Services was $1,551.1 million and Safety-Kleen Sustainability Solutions $318.3 million.
• Clean Harbors bought five businesses in 2026. ES&H closed on September 18, 2026 for $300.7 million, and EnviroServe closed on October 2, 2026, after the quarter ended, for about $470 million.

Source: Clean Harbors Q3 2026 results, October 28, 2026. Also in the Form 10-Q for the quarter ended September 30, 2026. Figures as reported; checked against the release on November 10, 2026.

How Clean Harbors splits revenue in its own release, under its own labels, for Q3 2026 against Q3 2025. Indented lines are parts of the line above them.

• Clean Harbors's Environmental Services revenue was $1.5 billion in Q3 2026, up 17% from $1.3 billion in Q3 2025, 82% of total revenue.
• Clean Harbors's Safety-Kleen Sustainability Solutions revenue was $331 million in Q3 2026, up 43% from $231 million in Q3 2025, 18% of total revenue.

Segment lines are the figures writers cite most often, because they show where the growth in a quarter came from. Companies redraw their segments from time to time and restate the prior year to match, so a year-ago figure here can differ from the one printed a year ago. When that has happened, the note above says so.

From the earnings release

In its Q3 2026 release, Clean Harbors said:

“In the fourth quarter of 2026, Clean Harbors expects Adjusted EBITDA to grow 23% to 26% year over year.”

“Adjusted EBITDA in the range of $1.44 billion to $1.48 billion, with a midpoint of $1.46 billion. This Adjusted EBITDA range is based on anticipated GAAP net income in the range of $528 million to $563 million.”

“Adjusted free cash flow in the range of $600 million to $660 million, with a midpoint of $630 million.”

Source: Clean Harbors Q3 2026 release, Oct 28, 2026.

This is the company's own guidance as of Oct 28, 2026, quoted as given. Walnut does not make forecasts of its own. Analyst estimates for the coming quarters are on the CLH forecast page.

Revenue and diluted EPS for the last 5 quarters. Each date links to that quarter's release.

GAAP revenues and diluted EPS, each as first reported in that quarter's release.

We do not hold a confirmed date for Clean Harbors's next report. Companies post the date on their investor relations site a few weeks ahead, usually with the time of the conference call.

Each quarter keeps its own page with the figures as reported, so a link to one stays pointed at the same numbers after the next report.

• Q3 2026 (this page), reported Oct 28, 2026

Clean Harbors runs two segments. Environmental Services, which collects, treats and disposes of hazardous and non-hazardous waste through a network of over 100 waste disposal facilities and also does emergency response and industrial maintenance, produced $1,538.4 million of the $1,869.4 million in third-party revenues in Q3 2026. Safety-Kleen Sustainability Solutions (SKSS), which collects used oil and re-refines it into base oil and lubricants, produced $331.0 million. (Clean Harbors Form 10-Q, Q3 2026, Oct 28, 2026; Clean Harbors Form 10-K, 2025, Feb 18, 2026)

Clean Harbors put most of the growth down to Field and Emergency Response Services, whose revenues rose $168.9 million from Q3 2025. A single large-scale emergency response event contributed approximately $120 million of revenues in the quarter. Safety-Kleen core service offerings grew $29.9 million on volumes and pricing, Technical Services rose $16.5 million on pricing, fuel surcharges and waste volumes, and Industrial Services rose $4.6 million. (Clean Harbors Form 10-Q, Q3 2026, Oct 28, 2026)

SKSS direct revenues rose 46.0%, or $100.3 million. Clean Harbors attributed this primarily to higher market pricing of oil-based products, which added $75.2 million in base oil and $15.2 million in blended oil products. The release says global supply disruptions kept prices for re-refined products high; SKSS collected 62 million gallons of waste oil in the quarter while maintaining an average charge-for-oil position. (Clean Harbors Form 10-Q, Q3 2026, Oct 28, 2026; Clean Harbors Q3 2026 release, Oct 28, 2026)

Clean Harbors' revenue is almost all North American. Of Q3 2026 third-party revenues, $1,708.3 million came from the United States and $161.2 million from Canada. By source, Technical Services was $507.2 million, Field and Emergency Response Services $401.2 million, Safety-Kleen Environmental Services $382.0 million, Industrial Services $336.7 million and Safety-Kleen Oil $242.4 million. (Clean Harbors Form 10-Q, Q3 2026, Oct 28, 2026)

Clean Harbors reported GAAP diluted EPS of $3.93 in Q3 2026, against $2.21 a year earlier, on net income of $208.1 million. Clean Harbors does not report an adjusted EPS figure. Its main non-GAAP measure is Adjusted EBITDA, which adds back accretion of environmental liabilities, stock-based compensation, depreciation and amortization, net interest expense and income taxes, and which rose 42% to $456.1 million. (Clean Harbors Q3 2026 release, Oct 28, 2026)

Income from operations rose 65% to $318.1 million. The provision for income taxes was $74.1 million on pre-tax income of $282.2 million, an effective rate of about 26.3%. Depreciation and amortization was $122.7 million, up from $114.7 million, as acquisitions added assets. (Clean Harbors Q3 2026 release, Oct 28, 2026)

Clean Harbors' diluted share count fell to 52,897 thousand from 53,713 thousand a year earlier. In Q3 2026 it repurchased and retired 81,576 shares for $25.0 million, and 252,765 shares for $75.0 million over the first nine months. (Clean Harbors Q3 2026 release, Oct 28, 2026; Clean Harbors Form 10-Q, Q3 2026, Oct 28, 2026)

Diluted EPS divides net income by the weighted average number of shares outstanding in the quarter, plus the shares that options and other equity awards could add. Buybacks shrink that count and lift EPS for the same profit; share issuance and stock awards enlarge it.

Clean Harbors gives guidance in its release in terms of Adjusted EBITDA and adjusted free cash flow, not revenue or EPS. For Q4 2026 it expects Adjusted EBITDA to grow 23% to 26% year over year. For full-year 2026 it raised the midpoint of both measures by $80 million, to Adjusted EBITDA of $1.44 billion to $1.48 billion and adjusted free cash flow of $600 million to $660 million, based on GAAP net income of $528 million to $563 million. (Clean Harbors Q3 2026 release, Oct 28, 2026)

Co-CEO Mike Battles retires at year-end, and Eric Gerstenberg becomes sole CEO on January 1. Clean Harbors said a 10-year disposal contract announced earlier in the year began in Q4. (Clean Harbors Q3 2026 release, Oct 28, 2026)

A consensus figure is the average of the models published by the analysts who cover Clean Harbors, collected by a data provider and revised up to the day of the report. A quarter that lands above it says how expectations were set as much as how the business did, and the share price on the day also reflects the guidance and the lines no consensus covers.

The consensus figures on this page are Yahoo Finance's, as pulled on the date shown. Each comes with the number of analysts behind it; the smaller that number, the more one revised estimate can move the average.

The figures below are the ones Clean Harbors's own release and filings put weight on for Q3 2026, with the latest reported value for each.

What the quarter means for a holding is a separate question from what it reported. The case for and against owning CLH is on is CLH a buy or a sell?, what analysts expect next is on the CLH forecast, and what the company does is on the Clean Harbors (CLH) stock page.

Every number on this page can be traced to a document Clean Harbors published. Checking one takes a couple of minutes, and it is worth doing before you quote a figure anywhere.

• The results release is the document linked in the source line above. Companies publish it on their investor relations site at the moment results go out, and it carries the headline tables: revenue, operating income, net income and EPS for the quarter and the year-ago quarter.
• The same release is filed with the SEC as Exhibit 99.1 to a Form 8-K under Item 2.02, usually on the day of the report. The SEC copy does not change after the fact, which makes it the safer thing to link when you cite a number.
• The quarterly report (Form 10-Q) follows within a few weeks and carries the full financial statements, the segment note and management's discussion of what changed. The fourth quarter is covered by the annual report (Form 10-K) instead.
• Restated comparisons are flagged in the notes on this page. When a company redraws its segments or changes how it adjusts EPS, it restates the year-ago column, so the year-ago figure in a new release can differ from the one printed a year ago. This page always uses the comparison in the newer release, because that is the like-for-like one.

A walk-through of every line in a release, with what each one tells you, is in how to read an earnings report.