Company lists · Data refreshed September 2026

Top 25 Pollution control consulting firms worldwide

Name: Pollution control consulting firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 11,010 companies tracked

RevenueBase identified 11,010 company matches for pollution control consulting firms worldwide as of September 2026 and tracks 124,029 professional contacts across them, including 36,807 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for pollution control consulting firms 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 29, 2026. Country and city lists for pollution control consulting firms 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 29, 2026 How this list was built

11,010Companies

124,029Contacts tracked

36,807Verified emails

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The 25 largest pollution control consulting firms worldwide

Ranked by team size

Top 25 of 11,010 company matches for pollution control consulting firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 29, 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	Civil & Environmental Consultants, INC	Exact match	Moon Township, PA, United StatesHQ recorded Sep 29, 2026	1,001-5,000	2,145 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 · Sep 29, 2026 · View company records in RevenueBase
2	Swca Environmental Consultants	Exact match	Phoenix, AZ, United StatesHQ recorded Sep 29, 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 29, 2026 · View company records in RevenueBase
3	Montrose Environmental Group	Exact match	Little Rock, AR, United StatesHQ recorded Sep 29, 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 29, 2026 · View company records in RevenueBase
4	DGE Danmark	Exact match	Højbjerg, DenmarkHQ recorded Sep 29, 2026	n/a	1,176 contacts →
	Exact match “Miljø er vores kernekompetence og vores ansvar.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
5	Barr Engineering CO	Exact match	Minneapolis, MN, United StatesHQ recorded Sep 29, 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 29, 2026 · View company records in RevenueBase
6	IEA	Exact match	Brooklyn Park, MN, United StatesHQ recorded Sep 29, 2026	n/a	982 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 · Sep 29, 2026 · View company records in RevenueBase
7	Trinity Consultants	Exact match	Dallas, TX, United StatesHQ recorded Sep 29, 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 29, 2026 · View company records in RevenueBase
8	Alliance Technical Group	Exact match	Decatur, AL, United StatesHQ recorded Sep 29, 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 29, 2026 · View company records in RevenueBase
9	ATC Group Services LLC	Exact match	Lafayette, LA, United StatesHQ recorded Sep 29, 2026	1,001-5,000	865 contacts →
	Exact match “ATC Group Services LLC is now Atlas.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
10	Pares&alvarez	Exact match	Santiago, ChileHQ recorded Sep 29, 2026	501-1,000	807 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 · Sep 29, 2026 · View company records in RevenueBase
11	Interagua Ecuador	Exact match	Guayaquil, EcuadorHQ recorded Sep 29, 2026	501-1,000	783 contacts →
	Exact match “Somos una empresa sólida, confiable, orientada al cliente; líder en el manejo ambiental, con procesos de calidad, tecnología y recursos humanos competentes.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
12	The Foth Companies	Exact match	De Pere, WI, United StatesHQ recorded Sep 29, 2026	501-1,000	781 contacts →
	Exact match “By combining science, engineering, and technology with a true collaborative spirit, Foth has delivered innovative solutions to our clients since 1938.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
13	Environmental Science Associates	Exact match	San Francisco, CA, United StatesHQ recorded Sep 29, 2026	501-1,000	732 contacts →
	Exact match “ESA is a 100% employee-owned environmental consulting firm.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
14	Inerco	Exact match	Sevilla, SpainHQ recorded Sep 29, 2026	1,001-5,000	688 contacts →
	Exact match “INERCO, with 30 years of experience, offers comprehensive services and develops advanced technologies that contribute to sustainable industrial development, acting as a leader in…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
15	Antea Group USA	Exact match	St Paul, MN, United StatesHQ recorded Sep 29, 2026	1,001-5,000	658 contacts →
	Exact match “Antea Group is an international engineering and environmental consulting firm specializing in full-service solutions in the fields of environment, health and safety, and…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
16	Cetrel	Exact match	Camaçari, BrazilHQ recorded Sep 29, 2026	1,001-5,000	611 contacts →
	Exact match “Cetrel was formely created as an environmental protection company 40 years ago, to treat efluents and solid residues of more than 70 industries of the Camaçari Industrial Complex…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
17	CTA Engenharia	Exact match	Rio De Janeiro, BrazilHQ recorded Sep 29, 2026	201-500	540 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
18	Vital Engenharia Ambiental	Exact match	Rio De Janeiro, BrazilHQ recorded Sep 29, 2026	5,001-10,000	500 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
19	Rincon Consultants	Exact match	Ventura, CA, United StatesHQ recorded Sep 29, 2026	501-1,000	479 contacts →
	Exact match “Rincon Consultants is a multi-disciplinary environmental sciences, planning, and engineering consulting firm that provides quality professional services to government and industry.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
20	Vertex Resource Group LTD	Exact match	Sherwood Park, AB, CanadaHQ recorded Sep 29, 2026	1,001-5,000	471 contacts →
	Exact match “Since 1962, Vertex has been a leading North American provider of environmental services.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
21	Sete Soluções E Tecnologia Ambiental	Exact match	Belo Horizonte, BrazilHQ recorded Sep 29, 2026	501-1,000	448 contacts →
	Exact match “Somos uma das maiores consultorias em meio ambiente do Brasil, fundada em 1997, contando, hoje, com uma equipe técnica multidisciplinar permanente, que congrega profissionais das…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
22	Groundwater & Environmental Services, INC	Exact match	Wall Township, NJ, United StatesHQ recorded Sep 29, 2026	201-500	447 contacts →
	Exact match “We are Groundwater & Environmental Services, Inc, better known as GES.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
23	ROUX	Exact match	Islandia, NY, United StatesHQ recorded Sep 29, 2026	201-500	433 contacts →
	Exact match “Founded 40 years ago, Roux is recognized for being a highly effective, client-focused environmental consulting and management firm.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
24	Amphos 21	Exact match	Barcelona, SpainHQ recorded Sep 29, 2026	201-500	418 contacts →
	Exact match “Founded in 1994, in Barcelona, Spain, Amphos21 includes three companies in Spain (1994), Chile (2009) and Peru (2012).” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
25	SET Environmental, INC	Exact match	Wheeling, IL, United StatesHQ recorded Sep 29, 2026	201-500	364 contacts →
	Exact match “Combining a tradition of integrity, innovation, and excellence, SET Environmental provides environmental management services to a nationwide client base.” Recorded in the RevenueBase company graph · Sep 29, 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 “pollution control consulting firms”. 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 11,010 pollution control consulting firms worldwide

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Pollution control consulting firms worldwide at a glance

As of Sep 29, 2026

29.7%Verified-email coverage

11.3Average contacts per company

1-10Median size (employees)

1.8%Largest-city concentration · Sao Paulo

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

6,776

11-50

3,228

51-200

717

201-500

165

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 pollution control consulting firms are linked below.
What qualifies: Company records worldwide whose business descriptions match “pollution control consulting firms” 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 36,807 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 29, 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.

Pollution control consulting firms by location

39 lists · largest first

Every Pollution control consulting firms 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 “pollution control consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many pollution control consulting firms are there worldwide?

RevenueBase identified 11,010 company matches for pollution control consulting firms 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?

Civil & Environmental Consultants, INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most pollution control consulting firms?

The United States leads with 2,138 companies, followed by Brazil (1,891) and India (508). Every pollution control consulting firms list by country and city is linked on this page.

Which city has the most pollution control consulting firms?

Sao Paulo leads with 196 company records, followed by Belo Horizonte (94) and Rio De Janeiro (79).

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 36,807 professional contacts with verified work emails tracked across these 11,010 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 29, 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.