Company lists · Data refreshed September 2026
Top 25 Hazardous waste treatment companies worldwide
RevenueBase identified 3,019 hazardous waste treatment companies worldwide as of September 2026 and tracks 65,129 professional contacts across them, including 18,710 with verified work emails. Italy is the largest market and Sao Paulo the largest hub.
This list covers hazardous waste treatment 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 treatment 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 treatment companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 8,924 contacts → | ||||
Indirect 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 | 3,810 contacts → | ||||
Strong evidence “At Ion Exchange India, we bring you total environment solutions - water treatment, liquid waste treatment & recycle, air pollution control, solid & hazardous waste management and…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 3,005 contacts → | ||||
Partial evidence “Cleanaway Waste Management Limited is Australia’s largest, publicly listed waste management company.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 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. | |||||
| 6 | 1,275 contacts → | ||||
Indirect 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. | |||||
| 7 | 899 contacts → | ||||
Indirect 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. | |||||
| 8 | 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. | |||||
| 9 | 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. | |||||
| 10 | 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. | |||||
| 11 | 635 contacts → | ||||
Partial evidence “WIN Waste Innovations is a waste management company committed to delivering essential waste management solutions to customers and communities supported by our team of 2,100…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 485 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 438 contacts → | ||||
Indirect evidence “KDM Empresas es el grupo líder en soluciones ambientales y gestión de residuos.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 427 contacts → | ||||
Partial evidence “Liquid Environmental Solutions - the largest, exclusively non-hazardous US wastewater collection and disposal company, is known for innovation and leadership in protecting…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 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. | |||||
| 16 | 364 contacts → | ||||
Strong evidence “PT Prasadha Pamunah Limbah Industri (PPLi) providing collection, recycling, treatment and disposal services for hazardous waste and non-hazardous waste in Indonesia.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 342 contacts → | ||||
Partial evidence “Vanheede Environment Group provides the best, most valuable destination for waste.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 326 contacts → | ||||
Indirect evidence “Gestion des déchets dangereux et non dangereux : collecte, regroupement et valorisation” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 313 contacts → | ||||
Indirect evidence “ACT Enviro is a Republic Services company.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 277 contacts → | ||||
Indirect evidence “Especializada no atendimento a grandes clientes privados, a Recicle Soluções Ambientais oferece soluções integradas para todas as etapas do gerenciamento de resíduos…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 264 contacts → | ||||
Partial evidence “Augean specialises in managing hard to handle wastes.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 263 contacts → | ||||
Partial evidence “Ironclad Environmental Solutions is the leading provider of custom waste management solutions, supported by the largest national fleet of innovative, top-quality specialty assets.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 23 | 254 contacts → | ||||
Partial evidence “Valicor is a trusted partner for sustainable waste management solutions.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 24 | 251 contacts → | ||||
Indirect evidence “We believe in doing what is right - for our customers, our people, our communities and the environment.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 243 contacts → | ||||
Partial evidence “The Don’t Waste Group is a global leader in on-site waste management and minimisation.” 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 treatment 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 treatment companies.
- Partial evidence
- Its own public description names part of hazardous waste treatment 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 treatment 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 3,019 hazardous waste treatment companies worldwide
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Hazardous waste treatment 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 treatment 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 treatment companies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “hazardous waste treatment 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 treatment 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 treatment 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, 18,710 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 treatment companies by location
14 lists · largest firstEvery Hazardous waste treatment companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Hazardous waste treatment companies based in Italy388
- Hazardous waste treatment companies based in the United States387
- Hazardous waste treatment companies based in Brazil275
- Hazardous waste treatment companies based in the United Kingdom157
- Hazardous waste treatment companies based in Germany150
- Hazardous waste treatment companies based in Spain143
- Hazardous waste treatment companies based in France121
- Hazardous waste treatment companies based in Mexico88
- Hazardous waste treatment companies based in India66
- Hazardous waste treatment companies based in Canada63
- Hazardous waste treatment companies based in Chile44
- Hazardous waste treatment companies based in Argentina43
- Hazardous waste treatment companies based in Australia41
- Hazardous waste treatment companies based in Switzerland28
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 treatment 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 treatment companies are there worldwide?
RevenueBase identified 3,019 hazardous waste treatment 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 treatment companies?
Italy leads with 388 companies, followed by the United States (387) and Brazil (275). Every hazardous waste treatment companies list by country and city is linked on this page.
Which city has the most hazardous waste treatment companies?
Sao Paulo leads with 26 headquartered companies, followed by Houston (15) and Dubai (12).
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 18,710 verified decision-maker contacts tracked across these 3,019 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.