Company lists · Data refreshed September 2026

Top 25 Environmental contracting companies worldwide

Name: Environmental contracting companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 14,335 companies tracked

RevenueBase identified 14,335 company matches for environmental contracting companies worldwide as of September 2026 and tracks 289,423 professional contacts across them, including 89,342 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for environmental contracting 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 September 19, 2026. Country and city lists for environmental contracting 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 Sep 19, 2026 How this list was built

14,335Companies

289,423Contacts tracked

89,342Verified emails

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The 25 largest environmental contracting companies worldwide

Ranked by team size

Top 25 of 14,335 company matches for environmental contracting companies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 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 Sep 19, 2026	10001+	30,019 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 · Sep 19, 2026 · View company records in RevenueBase
2	Clean Harbors	Exact match	Norwell, MA, United StatesHQ recorded Sep 19, 2026	10001+	8,924 contacts →
	Exact match “Clean Harbors is North America’s leading provider of environmental and industrial services.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3	GFL Environmental INC	Exact match	Vaughan, ON, CanadaHQ recorded Sep 19, 2026	10001+	6,179 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 · Sep 19, 2026 · View company records in RevenueBase
4	ION Exchange India LTD	Exact match	Mumbai, IndiaHQ recorded Sep 19, 2026	1,001-5,000	3,810 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 · Sep 19, 2026 · View company records in RevenueBase
5	Golder	Exact match	Vancouver, BC, CanadaHQ recorded Sep 19, 2026	5,001-10,000	3,167 contacts →
	Exact match “Golder was acquired by WSP.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6	APTIM	Exact match	Baton Rouge, LA, United StatesHQ recorded Sep 19, 2026	1,001-5,000	2,639 contacts →
	Exact match “APTIM enhances the quality of the environment, wellbeing of people, resilience of communities, and opportunity for employees to make a difference, not just a living.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7	Brown And Caldwell	Exact match	Walnut Creek, CA, United StatesHQ recorded Sep 19, 2026	1,001-5,000	2,473 contacts →
	Exact match “Headquartered in Walnut Creek, Calif, Brown and Caldwell is an employee-owned firm with 2,100+ professionals serving clients locally and globally from 52 locations.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8	Geosyntec Consultants	Exact match	Boca Raton, FL, United StatesHQ recorded Sep 19, 2026	1,001-5,000	2,393 contacts →
	Exact match “Geosyntec is a consulting and engineering firm that works with private and public sector clients to address new ventures and complex problems involving our environment, natural…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9	Providence	Exact match	Baton Rouge, LA, United StatesHQ recorded Sep 19, 2026	n/a	2,232 contacts →
	Exact match “Providence is an employee-owned engineering and environmental consulting firm.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10	ECC	Exact match	Burlingame, CA, United StatesHQ recorded Sep 19, 2026	n/a	2,040 contacts →
	Exact match “ECC is an employee-owned company that consistently ranks among the top construction and environmental companies in the world.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11	Swca Environmental Consultants	Exact match	Phoenix, AZ, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,629 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 · Sep 19, 2026 · View company records in RevenueBase
12	Montrose Environmental Group	Exact match	Little Rock, AR, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,529 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 · Sep 19, 2026 · View company records in RevenueBase
13	Weston Solutions, INC	Exact match	West Chester, PA, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,441 contacts →
	Exact match “Weston Solutions, Inc.(Weston) is a 100% employee-owned environmental and infrastructure services firm committed to safety and providing measurable client value.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14	US Ecology Inc., A Republic Services Company	Exact match	Boise, ID, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,360 contacts →
	Exact match “US Ecology is a Republic Services company.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15	PMI	Exact match	Irvine, CA, United StatesHQ recorded Sep 19, 2026	n/a	1,308 contacts →
	Exact match “Training and Development Solutions” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16	Clean Earth	Exact match	King Of Prussia, PA, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,275 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 · Sep 19, 2026 · View company records in RevenueBase
17	RSK Group	Exact match	Helsby, United KingdomHQ recorded Sep 19, 2026	10001+	1,255 contacts →
	Exact match “RSK Group is a global leader in the delivery of environmental and engineering solutions.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18	DGE Danmark	Exact match	Højbjerg, DenmarkHQ recorded Sep 19, 2026	n/a	1,176 contacts →
	Exact match “Miljø er vores kernekompetence og vores ansvar.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19	Verdantas	Exact match	Tampa, FL, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,139 contacts →
	Exact match “At Verdantas, we blend engineering and environmental science together with advanced technology and world-renowned labs to create solutions with the big picture in mind.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20	Apex Companies	Exact match	Rockville, MD, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,137 contacts →
	Exact match “Who is Apex?” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21	Barr Engineering CO	Exact match	Minneapolis, MN, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,088 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 · Sep 19, 2026 · View company records in RevenueBase
22	Triumvirate Environmental	Exact match	Somerville, MA, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,068 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 · Sep 19, 2026 · View company records in RevenueBase
23	Asrc Energy Services, LLC	Exact match	Anchorage, AK, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,016 contacts →
	Exact match “ASRC Energy is the largest service provider on the North Slope.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24	Trinity Consultants	Exact match	Dallas, TX, United StatesHQ recorded Sep 19, 2026	1,001-5,000	961 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 · Sep 19, 2026 · View company records in RevenueBase
25	Alliance Technical Group	Exact match	Decatur, AL, United StatesHQ recorded Sep 19, 2026	1,001-5,000	956 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 · Sep 19, 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 “environmental contracting 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 14,335 environmental contracting companies worldwide

See the full list, filter by size, metro and specialty, and access 89,342 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Environmental contracting companies worldwide at a glance

As of Sep 19, 2026

30.9%Verified-email coverage

20.2Average contacts per company

11-50Median size (employees)

1.4%Largest-city concentration · Sao Paulo

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

6,729

11-50

4,903

51-200

1,806

201-500

475

501-1,000

148

1,001-5,000

140

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 environmental contracting companies are linked below.
What qualifies: Company records worldwide whose business descriptions match “environmental contracting 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 89,342 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 September 19, 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.

Environmental contracting companies by location

54 lists · largest first

Every Environmental contracting 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 “environmental contracting companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many environmental contracting companies are there worldwide?

RevenueBase identified 14,335 company matches for environmental contracting companies worldwide as of September 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 environmental contracting companies?

The United States leads with 4,289 companies, followed by Brazil (1,714) and Canada (658). Every environmental contracting companies list by country and city is linked on this page.

Which city has the most environmental contracting companies?

Sao Paulo leads with 197 company records, followed by Houston (87) and Calgary (76).

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 89,342 professional contacts with verified work emails tracked across these 14,335 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 September 19, 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.