Company lists · Data refreshed October 2026

Top 25 Hazardous waste consulting companies worldwide

Name: Hazardous waste consulting companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 22, 2026 16,124 companies tracked

RevenueBase identified 16,124 company matches for hazardous waste consulting companies worldwide as of October 2026 and tracks 276,188 professional contacts across them, including 79,368 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for hazardous waste consulting companies worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 22, 2026. Country and city lists for hazardous waste consulting companies follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Oct 22, 2026 How this list was built

16,124Companies

276,188Contacts tracked

79,368Verified emails

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The 25 largest hazardous waste consulting companies worldwide

Ranked by team size

Top 25 of 16,124 company matches for hazardous waste consulting companies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 22, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Veolia	Exact match	Aubervilliers, FranceHQ recorded Oct 22, 2026	10001+	31,975 contacts →
	Exact match “Veolia, a global leader in environmental services, works every day to build environmental security for the benefit of public health and the competitiveness of industries and…” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
2	Clean Harbors	Exact match	Norwell, MA, United StatesHQ recorded Oct 22, 2026	10001+	9,255 contacts →
	Exact match “Clean Harbors is North America’s leading provider of environmental and industrial services.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
3	GFL Environmental INC	Exact match	Vaughan, ON, CanadaHQ recorded Oct 22, 2026	10001+	6,275 contacts →
	Exact match “GFL Environmental is the only major diversified environmental services company in North America offering services in solid waste management, liquid waste management and soil…” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
4	ION Exchange India LTD	Exact match	Mumbai, IndiaHQ recorded Oct 22, 2026	1,001-5,000	3,859 contacts →
	Exact match “At Ion Exchange India, we bring you total environment solutions - water treatment, liquid waste treatment & recycle, air pollution control, solid & hazardous waste management and…” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
5	Golder	Exact match	Vancouver, BC, CanadaHQ recorded Oct 22, 2026	5,001-10,000	3,241 contacts →
	Exact match “Golder was acquired by WSP.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
6	RE Sustainability Limited	Exact match	Hyderabad, IndiaHQ recorded Oct 22, 2026	10001+	2,584 contacts →
	Exact match “Re is one of Asia’s leading integrated resource management and sustainability solutions companies, turning environmental challenges into sustainable value.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
7	Civil & Environmental Consultants, INC	Exact match	Moon Township, PA, United StatesHQ recorded Oct 22, 2026	1,001-5,000	2,204 contacts →
	Exact match “Civil & Environmental Consultants, Inc.(CEC) provides comprehensive market-oriented consulting services that advance the strategic business objectives of its clients.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
8	Swca Environmental Consultants	Exact match	Phoenix, AZ, United StatesHQ recorded Oct 22, 2026	1,001-5,000	1,661 contacts →
	Exact match “Founded on a commitment to sound science and creative solutions, SWCA is a leader in environmental and management consulting services.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
9	Adec Innovations	Exact match	Irvine, CA, United StatesHQ recorded Oct 22, 2026	1,001-5,000	1,508 contacts →
	Exact match “ADEC Innovations seamlessly delivers fully integrated, cost-effective industry expertise, business process & data management, and software services.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
10	US Ecology Inc., A Republic Services Company	Exact match	Boise, ID, United StatesHQ recorded Oct 22, 2026	1,001-5,000	1,353 contacts →
	Exact match “US Ecology is a Republic Services company.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
11	Apex Companies	Exact match	Rockville, MD, United StatesHQ recorded Oct 22, 2026	1,001-5,000	1,266 contacts →
	Exact match “Who is Apex?” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
12	RSK Group	Exact match	Helsby, United KingdomHQ recorded Oct 22, 2026	10001+	1,212 contacts →
	Exact match “RSK Group is a global leader in the delivery of environmental and engineering solutions.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
13	DGE Danmark	Exact match	Højbjerg, DenmarkHQ recorded Oct 22, 2026	n/a	1,171 contacts →
	Exact match “Miljø er vores kernekompetence og vores ansvar.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
14	Triumvirate Environmental	Exact match	Somerville, MA, United StatesHQ recorded Oct 22, 2026	1,001-5,000	1,120 contacts →
	Exact match “Triumvirate Environmental provides sustainable environmental solutions to leading companies in the Life Sciences, Healthcare, Education, and Advanced Manufacturing markets.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
15	Clean Earth	Exact match	King Of Prussia, PA, United StatesHQ recorded Oct 22, 2026	1,001-5,000	1,110 contacts →
	Exact match “Veolia has completed the acquisition of Clean Earth, bringing together two organizations with a shared commitment to environmental stewardship, safety and operational excellence.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
16	Barr Engineering CO	Exact match	Minneapolis, MN, United StatesHQ recorded Oct 22, 2026	1,001-5,000	1,108 contacts →
	Exact match “Barr provides engineering and environmental consulting services to clients across the Midwest, throughout the Americas, and around the world.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
17	Trinity Consultants	Exact match	Dallas, TX, United StatesHQ recorded Oct 22, 2026	1,001-5,000	1,077 contacts →
	Exact match “Trinity Consultants is a global team of experts helping organizations solve complex challenges in environmental compliance, ecological protection, infrastructure performance, and…” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
18	Alliance Technical Group	Exact match	Decatur, AL, United StatesHQ recorded Oct 22, 2026	1,001-5,000	1,048 contacts →
	Exact match “Alliance is a new kind of environmental services company-powered by innovation, focused on service, and committed to client success.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
19	Estre Ambiental	Exact match	Sao Paulo, BrazilHQ recorded Oct 22, 2026	5,001-10,000	1,024 contacts →
	Exact match “Estre is one of the largest environmental services companies in Brazil and Latin America.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
20	IEA	Exact match	Brooklyn Park, MN, United StatesHQ recorded Oct 22, 2026	n/a	1,001 contacts →
	Exact match “The Institute for Environmental Assessment, Inc.(IEA) is small business committed to providing trusted environmental safety consulting services for private and public…” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
21	Crystal Clean	Exact match	Hoffman Estates, IL, United StatesHQ recorded Oct 22, 2026	1,001-5,000	933 contacts →
	Exact match “Crystal Clean is a national leader in the environmental services market, providing the smart alternative.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
22	ATC Group Services LLC	Exact match	Lafayette, LA, United StatesHQ recorded Oct 22, 2026	1,001-5,000	872 contacts →
	Exact match “ATC Group Services LLC is now Atlas.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
23	Pares&alvarez	Exact match	Santiago, ChileHQ recorded Oct 22, 2026	501-1,000	871 contacts →
	Exact match “We are Pares & Alvarez, our extensive experience and the recognition of our clients makes us one of the leading Engineering Companies in environmental, consulting, engineering and…” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
24	Enviroserv Waste Management PTY LTD	Exact match	Ekurhuleni, South AfricaHQ recorded Oct 22, 2026	1,001-5,000	856 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
25	Montrose Environmental Group	Exact match	Little Rock, AR, United StatesHQ recorded Oct 22, 2026	1,001-5,000	843 contacts →
	Exact match “Onterris (formerly Montrose Environmental Group) was one of the first to see environmental responsibility as not just an imperative but as a strategic asset.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “hazardous waste consulting companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 16,124 hazardous waste consulting companies worldwide

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Hazardous waste consulting companies worldwide at a glance

As of Oct 22, 2026

28.7%Verified-email coverage

17.1Average contacts per company

1-10Median size (employees)

1.5%Largest-city concentration · Sao Paulo

Oct 22, 2026Page data refreshed

Companies by employee count

1-10

8,879

11-50

5,073

51-200

1,509

201-500

371

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for hazardous waste consulting companies are linked below.
What qualifies: Company records worldwide whose business descriptions match “hazardous waste consulting companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 79,368 professional contacts with verified work emails across the full matched dataset. 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 October 22, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Hazardous waste consulting companies by location

69 lists · largest first

Every Hazardous waste consulting companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “hazardous waste consulting companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many hazardous waste consulting companies are there worldwide?

RevenueBase identified 16,124 company matches for hazardous waste consulting companies worldwide as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Veolia tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most hazardous waste consulting companies?

The United States leads with 3,575 companies, followed by Brazil (2,268) and Italy (805). Every hazardous waste consulting companies list by country and city is linked on this page.

Which city has the most hazardous waste consulting companies?

Sao Paulo leads with 247 company records, followed by Belo Horizonte (94) and Curitiba (89).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 79,368 professional contacts with verified work emails tracked across these 16,124 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 22, 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 SmartSearch, 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.