Based on the aggregated intelligence of 180,000-plus investors participating in Motley Fool CAPS, the Fool's free investing community, environmental services provider Clean Harbors (CLH -1.23%) has earned a respected four-star ranking.

With that in mind, let's take a closer look at Clean Harbors and see what CAPS investors are saying about the stock right now.

Clean Harbors facts

Headquarters (Founded)

Norwell, Mass. (1980)

Market Cap

$2.8 billion

Industry

Environmental and facilities services

Trailing-12-Month Revenue

$2.2 billion

Management

Founder/Chairman/CEO Alan McKim
Vice Chairman/COO James Rutledge

Return on Equity (Average, Past 3 Years)

14.4%

Cash / Debt

$534.7 million / $809.4 million

Competitors

PSC
Veolia Environnement
(VEOEY 1.36%)
Waste Management
(WM 0.57%)

Sources: S&P Capital IQ and Motley Fool CAPS.

On CAPS, 94% of the 327 members who have rated Clean Harbors believe the stock will outperform the S&P 500 going forward.

A few weeks ago, one of those Fools, RSue, succinctly summed up the Clean Harbors bull case for our community: "They are a dominant player in the environmental clean-up and toxic waste management field. Unfortunately, managing the human fouling of the earth's natural eco-systems will be an ongoing worldwide problem and need."

If you want market-thumping returns, you need to put together the best portfolio you can. Of course, despite a strong four-star rating, Clean Harbors may not be your top choice.

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Want to see how well (or not so well) the stocks in this series are performing? Follow the TrackPoisedTo CAPS account.