Company lists · Data refreshed September 2026
Top 25 Hazardous waste cleanup companies worldwide
RevenueBase identified 5,820 hazardous waste cleanup companies worldwide as of September 2026 and tracks 118,566 professional contacts across them, including 36,002 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.
This list covers hazardous waste cleanup companies worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 20, 2026. Country and city lists for hazardous waste cleanup companies follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest hazardous waste cleanup companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 8,924 contacts → | ||||
Partial evidence “Clean Harbors is North America’s leading provider of environmental and industrial services.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 2 | 6,179 contacts → | ||||
Partial evidence “GFL Environmental is the only major diversified environmental services company in North America offering services in solid waste management, liquid waste management and soil…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 2,607 contacts → | ||||
Indirect evidence “Re Sustainability Limited (RE), a KKR-backed company, is one of Asia’s leading providers of comprehensive environment management services.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 1,529 contacts → | ||||
Indirect evidence “Onterris (formerly Montrose Environmental Group) was one of the first to see environmental responsibility as not just an imperative but as a strategic asset.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 1,441 contacts → | ||||
Indirect evidence “Weston Solutions, Inc.(Weston) is a 100% employee-owned environmental and infrastructure services firm committed to safety and providing measurable client value.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 1,360 contacts → | ||||
Indirect evidence “US Ecology is a Republic Services company.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 1,275 contacts → | ||||
Partial evidence “Veolia has completed the acquisition of Clean Earth, bringing together two organizations with a shared commitment to environmental stewardship, safety and operational excellence.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 899 contacts → | ||||
Partial evidence “Crystal Clean is a national leader in the environmental services market, providing the smart alternative.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 839 contacts → | ||||
Strong evidence “EnviroServ offers cost-effective solutions to the complex hazardous and non-hazardous waste and chemical pollution problems, providing peace of mind with regard to the legal…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 753 contacts → | ||||
Strong evidence “The leading company in Europe for the treatment and recovery of hazardous waste and polluted sites.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 741 contacts → | ||||
Indirect evidence “Contract Resources have been providing specialised industrial services for over 30 years to the heavy process industries in Australia, New Zealand and the Middle East.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 716 contacts → | ||||
Partial evidence “WM New Zealand is New Zealand's leading resource recovery, recycling and waste, and environmental services provider, driven by our focus on safety, sustainability, and service and…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 677 contacts → | ||||
Indirect evidence “En Promotora Ambiental nos hemos especializado en brindar soluciones ambientales a los sectores público y privado, en los campos de comercio e industria.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 543 contacts → | ||||
Partial evidence “We are Eni’s environmental company active for over 20 years, in giving new life, according to the principles of the circular economy, to industrial land, water and waste through…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 500 contacts → | ||||
Indirect evidence “Vital Engenharia Ambiental is an environmental services company based out of R Santa Luzia, 651, 21 Andar Parte, Rio De Janeiro, Rio De Janeiro, Brazil.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 484 contacts → | ||||
Partial evidence “We are a company that provides industrial cleaning, maintenance and induatrial hygiene.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 483 contacts → | ||||
Indirect evidence “ENTACT is the partner of choice in solving our customer's most complex environmental remediation and geotechnical infrastructure challenges.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 481 contacts → | ||||
Partial evidence “At VLS, we address your company’s most significant hurdles with waste management and compliance through sustainable solutions.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 471 contacts → | ||||
Indirect evidence “Since 1962, Vertex has been a leading North American provider of environmental services.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 433 contacts → | ||||
Indirect evidence “Founded 40 years ago, Roux is recognized for being a highly effective, client-focused environmental consulting and management firm.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 430 contacts → | ||||
Indirect evidence “HydroGeoLogic, Inc.(HGL) is an employee-owned company with over 36 years of experience developing innovative, effective, and sustainable engineering and remediation solutions to…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 428 contacts → | ||||
Indirect evidence “HEPACO is the premier environmental and emergency services company in the Eastern United States with coverage across 40+ regional offices.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 23 | 421 contacts → | ||||
Indirect evidence “Atica es una compañía que desde hace 30 años trabaja en la valorización, gestión y disposición integral de residuos industriales, hospitalarios, minero energéticos y aceites.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 24 | 384 contacts → | ||||
Partial evidence “EnviroServe provides comprehensive environmental and rail services to safely remediate and prevent environmental releases, manage waste, and respond to emergency and catastrophic…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 364 contacts → | ||||
Indirect evidence “Combining a tradition of integrity, innovation, and excellence, SET Environmental provides environmental management services to a nationwide client base.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: hazardous waste cleanup companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names hazardous waste cleanup companies.
- Partial evidence
- Its own public description names part of hazardous waste cleanup companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name hazardous waste cleanup companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 5,820 hazardous waste cleanup companies worldwide
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Hazardous waste cleanup companies worldwide at a glance
As of Sep 20, 2026Companies by employee count
Email recency is reported on each country list linked below.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among hazardous waste cleanup companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- Coverage
- Every country. Country and city lists for hazardous waste cleanup companies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “hazardous waste cleanup companies”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names hazardous waste cleanup companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among hazardous waste cleanup companies, and records with no verified work email.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 36,002 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 20, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Hazardous waste cleanup companies by location
20 lists · largest firstEvery Hazardous waste cleanup companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Hazardous waste cleanup companies based in the United States2,122
- Hazardous waste cleanup companies based in Italy436
- Hazardous waste cleanup companies based in Brazil331
- Hazardous waste cleanup companies based in Canada279
- Hazardous waste cleanup companies based in the United Kingdom223
- Hazardous waste cleanup companies based in France219
- Hazardous waste cleanup companies based in Germany201
- Hazardous waste cleanup companies based in Australia129
- Hazardous waste cleanup companies based in Spain110
- Hazardous waste cleanup companies based in Mexico96
- Hazardous waste cleanup companies based in the Netherlands77
- Hazardous waste cleanup companies based in India55
- Hazardous waste cleanup companies based in Argentina48
- Hazardous waste cleanup companies based in Sweden45
- Hazardous waste cleanup companies based in Colombia43
- Hazardous waste cleanup companies based in Belgium39
- Hazardous waste cleanup companies based in South Africa38
- Hazardous waste cleanup companies based in Chile37
- Hazardous waste cleanup companies based in Switzerland31
- Hazardous waste cleanup companies based in Poland30
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names hazardous waste cleanup companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many hazardous waste cleanup companies are there worldwide?
RevenueBase identified 5,820 hazardous waste cleanup companies worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Clean Harbors, headquartered in Norwell, tops this list with the largest team on record.
Which country has the most hazardous waste cleanup companies?
The United States leads with 2,122 companies, followed by Italy (436) and Brazil (331). Every hazardous waste cleanup companies list by country and city is linked on this page.
Which city has the most hazardous waste cleanup companies?
Sao Paulo leads with 61 headquartered companies, followed by Houston (38) and Calgary (37).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 36,002 verified decision-maker contacts tracked across these 5,820 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.