Company lists · Data refreshed September 2026

Top 25 Environmental compliance consultancies worldwide

Name: Environmental compliance consultancies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 18,534 companies tracked

RevenueBase identified 18,534 environmental compliance consultancies worldwide as of September 2026 and tracks 187,293 professional contacts across them, including 59,091 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers environmental compliance consultancies 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 21, 2026. Country and city lists for environmental compliance consultancies 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 21, 2026 86% judged on-target in blind review

18,534Companies

187,293Contacts tracked

59,091Verified emails

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The 25 largest environmental compliance consultancies worldwide

Ranked by team size

Top 25 of 18,534 environmental compliance consultancies worldwide, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to environmental compliance consultancies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Aparajitha Corporate Services Private Limited	Partial evidence	Madurai, IndiaHQ checked Sep 21, 2026	1,001-5,000	2,064 contacts →
	Partial evidence “Aparajitha: Revolutionising India's Regulatory Compliance Space With 25 years of experience, Aparajitha covers compliance for over establishments, factories, and 52 lakh contract…” Source: RevenueBase Database · checked Sep 21, 2026
2	Swca Environmental Consultants	Partial evidence	Phoenix, AZ, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,629 contacts →
	Partial evidence “Founded on a commitment to sound science and creative solutions, SWCA is a leader in environmental and management consulting services.” Source: RevenueBase Database · checked Sep 21, 2026
3	Montrose Environmental Group	Partial evidence	Little Rock, AR, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,529 contacts →
	Partial 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 21, 2026
4	Adec Innovations	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,304 contacts →
	Indirect evidence “ADEC Innovations seamlessly delivers fully integrated, cost-effective industry expertise, business process & data management, and software services.” Source: RevenueBase Database · checked Sep 21, 2026
5	DGE Danmark	Indirect evidence	Højbjerg, DenmarkHQ checked Sep 21, 2026	n/a	1,176 contacts →
	Indirect evidence “Miljø er vores kernekompetence og vores ansvar.” Source: RevenueBase Database · checked Sep 21, 2026
6	Apex Companies	Indirect evidence	Rockville, MD, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,137 contacts →
	Indirect evidence “Who is Apex?” Source: RevenueBase Database · checked Sep 21, 2026
7	Barr Engineering CO	Partial evidence	Minneapolis, MN, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,088 contacts →
	Partial evidence “Barr provides engineering and environmental consulting services to clients across the Midwest, throughout the Americas, and around the world.” Source: RevenueBase Database · checked Sep 21, 2026
8	Triumvirate Environmental	Partial evidence	Somerville, MA, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,068 contacts →
	Partial evidence “Triumvirate Environmental provides sustainable environmental solutions to leading companies in the Life Sciences, Healthcare, Education, and Advanced Manufacturing markets.” Source: RevenueBase Database · checked Sep 21, 2026
9	IEA	Partial evidence	Brooklyn Park, MN, United StatesHQ checked Sep 21, 2026	n/a	982 contacts →
	Partial evidence “The Institute for Environmental Assessment, Inc.(IEA) is small business committed to providing trusted environmental safety consulting services for private and public…” Source: RevenueBase Database · checked Sep 21, 2026
10	Trinity Consultants	Strong evidence	Dallas, TX, United StatesHQ checked Sep 21, 2026	1,001-5,000	961 contacts →
	Strong evidence “Trinity Consultants is a global team of experts helping organizations solve complex challenges in environmental compliance, ecological protection, infrastructure performance, and…” Source: RevenueBase Database · checked Sep 21, 2026
11	Alliance Technical Group	Partial evidence	Decatur, AL, United StatesHQ checked Sep 21, 2026	1,001-5,000	956 contacts →
	Partial evidence “Alliance is a new kind of environmental services company-powered by innovation, focused on service, and committed to client success.” Source: RevenueBase Database · checked Sep 21, 2026
12	Pinchin In Canada	Indirect evidence	Mississauga, ON, CanadaHQ checked Sep 21, 2026	1,001-5,000	895 contacts →
	Indirect evidence “Pinchin Ltd.” Source: RevenueBase Database · checked Sep 21, 2026
13	ATC Group Services LLC	Indirect evidence	Lafayette, LA, United StatesHQ checked Sep 21, 2026	1,001-5,000	865 contacts →
	Indirect evidence “ATC Group Services LLC is now Atlas.” Source: RevenueBase Database · checked Sep 21, 2026
14	Pares&alvarez	Partial evidence	Santiago, ChileHQ checked Sep 21, 2026	501-1,000	807 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 21, 2026
15	Alpes Contrôles	Indirect evidence	Sites, FranceHQ checked Sep 21, 2026	501-1,000	799 contacts →
	Indirect evidence “Alpes Contrôles accompagne ses clients sur la conformité réglementaire des ouvrages, installations, équipements produits et services soumis à des exigences réglementaires.” Source: RevenueBase Database · checked Sep 21, 2026
16	Interagua Ecuador	Indirect evidence	Guayaquil, EcuadorHQ checked Sep 21, 2026	501-1,000	783 contacts →
	Indirect evidence “Somos una empresa sólida, confiable, orientada al cliente; líder en el manejo ambiental, con procesos de calidad, tecnología y recursos humanos competentes.” Source: RevenueBase Database · checked Sep 21, 2026
17	The Foth Companies	Indirect evidence	De Pere, WI, United StatesHQ checked Sep 21, 2026	501-1,000	781 contacts →
	Indirect evidence “By combining science, engineering, and technology with a true collaborative spirit, Foth has delivered innovative solutions to our clients since 1938.” Source: RevenueBase Database · checked Sep 21, 2026
18	Environmental Science Associates	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 21, 2026	501-1,000	732 contacts →
	Partial evidence “ESA is a 100% employee-owned environmental consulting firm.” Source: RevenueBase Database · checked Sep 21, 2026
19	Inerco	Indirect evidence	Sevilla, SpainHQ checked Sep 21, 2026	1,001-5,000	688 contacts →
	Indirect evidence “INERCO, with 30 years of experience, offers comprehensive services and develops advanced technologies that contribute to sustainable industrial development, acting as a leader in…” Source: RevenueBase Database · checked Sep 21, 2026
20	Ricardo PLC	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	1,001-5,000	670 contacts →
	Indirect evidence “Click the 'Follow' button and explore careers at Ricardo on our 'Jobs' and 'Life' tabs and at careers.ricardo.com.” Source: RevenueBase Database · checked Sep 21, 2026
21	Antea Group USA	Partial evidence	St Paul, MN, United StatesHQ checked Sep 21, 2026	1,001-5,000	658 contacts →
	Partial evidence “Antea Group is an international engineering and environmental consulting firm specializing in full-service solutions in the fields of environment, health and safety, and…” Source: RevenueBase Database · checked Sep 21, 2026
22	CTA Engenharia	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 21, 2026	201-500	540 contacts →
	Indirect evidence “A CTA foi criada em 1995, em Belo Horizonte Minas Gerais, ampliando sua atividade e posicionando sua sede no estado do Rio de Janeiro em Duque de Caxias, próximo ao Pólo…” Source: RevenueBase Database · checked Sep 21, 2026
23	EBI Consulting	Indirect evidence	Burlington, MA, United StatesHQ checked Sep 21, 2026	501-1,000	535 contacts →
	Indirect evidence “For 35 years we have been helping investors, lenders, owners, developers, contractors, and property managers reduce risk and optimize their built facilities, infrastructure and…” Source: RevenueBase Database · checked Sep 21, 2026
24	Vital Engenharia Ambiental	Partial evidence	Rio De Janeiro, BrazilHQ checked Sep 21, 2026	5,001-10,000	500 contacts →
	Partial 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 21, 2026
25	VLS Environmental Solutions, LLC	Partial evidence	Houston, TX, United StatesHQ checked Sep 21, 2026	1,001-5,000	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 21, 2026

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: environmental compliance consultancies. 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 environmental compliance consultancies.
Partial evidence: Its own public description names part of environmental compliance consultancies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name environmental compliance consultancies. 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 18,534 environmental compliance consultancies worldwide

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Environmental compliance consultancies worldwide at a glance

As of Sep 21, 2026

31.6%Verified-email coverage

10.1Average contacts per company

1-10Median size (employees)

1.7%Largest-city concentration · Sao Paulo

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

12,204

11-50

4,934

51-200

1,009

201-500

201

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

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among environmental compliance consultancies, 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 environmental compliance consultancies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “environmental compliance consultancies”. 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 environmental compliance consultancies), 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 environmental compliance consultancies, 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, 59,091 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 21, 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.

Environmental compliance consultancies by location

68 lists · largest first

Every Environmental compliance consultancies 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 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 environmental compliance consultancies, 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 environmental compliance consultancies are there worldwide?

RevenueBase identified 18,534 environmental compliance consultancies 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?

Aparajitha Corporate Services Private Limited, headquartered in Madurai, tops this list with the largest team on record.

Which country has the most environmental compliance consultancies?

The United States leads with 2,968 companies, followed by Brazil (2,779) and the United Kingdom (1,099). Every environmental compliance consultancies list by country and city is linked on this page.

Which city has the most environmental compliance consultancies?

Sao Paulo leads with 315 headquartered companies, followed by London (151) and Belo Horizonte (127).

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 59,091 verified decision-maker contacts tracked across these 18,534 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 21, 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.