Company lists · Data refreshed November 2026

Top 25 Environmental auditing consultants worldwide

RevenueBase identified 7,195 company matches for environmental auditing consultants worldwide as of November 2026 and tracks 70,930 professional contacts across them, including 22,632 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for environmental auditing consultants 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 November 6, 2026. Country and city lists for environmental auditing consultants 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 Nov 6, 2026 How this list was built
7,195Companies
70,930Contacts tracked
22,632Verified emails
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The 25 largest environmental auditing consultants worldwide

Ranked by team size
Top 25 of 7,195 company matches for environmental auditing consultants worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchPhoenix, MA, United StatesHQ recorded Nov 6, 20261,001-5,0001,695 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 · Nov 6, 2026 · View company records in RevenueBase
2Exact matchHøjbjerg, DenmarkHQ recorded Nov 6, 2026n/a1,192 contacts →

Exact match

“Miljø er vores kernekompetence og vores ansvar.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchDecatur, PA, United StatesHQ recorded Nov 6, 20261,001-5,0001,088 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 · Nov 6, 2026 · View company records in RevenueBase
4Exact matchLafayette, MA, United StatesHQ recorded Nov 6, 20261,001-5,000876 contacts →

Exact match

“ATC Group Services LLC is now Atlas.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchLittle Rock, AR, United StatesHQ recorded Nov 6, 20261,001-5,000861 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 · Nov 6, 2026 · View company records in RevenueBase
6Exact matchRio De Janeiro, BrazilHQ recorded Nov 6, 2026201-500694 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 · Nov 6, 2026 · View company records in RevenueBase
7Exact matchSt. Paul, MD, United StatesHQ recorded Nov 6, 20261,001-5,000649 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 · Nov 6, 2026 · View company records in RevenueBase
8Exact matchVentura, CA, United StatesHQ recorded Nov 6, 2026501-1,000509 contacts →

Exact match

“Rincon Consultants is a multidisciplinary environmental, planning, and advisory firm.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchArlington, VA, United StatesHQ recorded Nov 6, 2026201-500501 contacts →

Exact match

“At Enhesa we empower the world’s largest businesses to achieve compliance, manage risk, and drive sustainability with clear, actionable insights.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchIslandia, NY, United StatesHQ recorded Nov 6, 2026201-500474 contacts →

Exact match

“The Roux organization applies sophisticated scientific, technical, and managerial resources to develop and implement effective, efficient, and sustainable solutions to our…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchWall Township, VA, United StatesHQ recorded Nov 6, 2026201-500470 contacts →

Exact match

“We are Groundwater & Environmental Services, Inc, better known as GES.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchStratford-upon-avon, United KingdomHQ recorded Nov 6, 2026201-500404 contacts →

Exact match

“Valpak, a Reconomy brand, is an EcoVadis Platinum certified leader in environmental compliance, recycling, and sustainability solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchLucca, ItalyHQ recorded Nov 6, 2026201-500375 contacts →

Exact match

“Salute, Sicurezza, Ambiente e Qualità del prodotto: sei davvero sostenibile?”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchSan Giovanni Teatino, ItalyHQ recorded Nov 6, 2026501-1,000308 contacts →

Exact match

“LabAnalysis Environmental Science is LabAnalysis Group's company dedicated to the environmental sector.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchHouston, CA, United StatesHQ recorded Nov 6, 2026201-500281 contacts →

Exact match

“GSI Environmental, Inc.(GSI), is an environmental engineering and science consulting firm committed to measuring, analyzing, and solving complex environmental problems around the…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchSydney, AustraliaHQ recorded Nov 6, 2026201-500273 contacts →

Exact match

“Established in 1996, JBS & G is one of Australia’s leading environmental consultancies with offices in Sydney, Melbourne, Perth, Adelaide, Brisbane, Canberra, Darwin, Wollongong…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchPittsburgh, QC, United StatesHQ recorded Nov 6, 2026201-500273 contacts →

Exact match

“EHS Support is a global family of engineers, geologists, scientists, and technical experts who specialize in complex environmental, health, and safety (EH & S) challenges across…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchMadrid, SpainHQ recorded Nov 6, 202610001+268 contacts →

Exact match

“At Applus+, we provide environmental management services to help clients reduce their environmental footprint and improve operational efficiency, while minimizing risks and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchGoiânia, BrazilHQ recorded Nov 6, 2026201-500251 contacts →

Exact match

“A GAP Ambiental oferece serviços para pequenas, médias e grandes empresas em diversas áreas que vão desde o licenciamento ao acompanhamento da execução de projetos.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchSão Paulo, BrazilHQ recorded Nov 6, 202651-200248 contacts →

Exact match

“A WALM Engenharia e Tecnologia Ambiental Ltda.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchSpringfield, AR, United StatesHQ recorded Nov 6, 2026201-500245 contacts →

Exact match

“Environmental Works, Inc.(EWI) offers truly comprehensive environmental solutions for a variety of industries, businesses, and municipalities.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchPittsfield, ME, United StatesHQ recorded Nov 6, 2026201-500244 contacts →

Exact match

“At Kleinschmidt, we work primarily with energy companies and government agencies in North America to protect and enhance the environment without compromising performance.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchSilkeborg, DenmarkHQ recorded Nov 6, 2026201-500240 contacts →

Exact match

“Dansk Miljørådgivning A/S (DMR) er et rådgivende ingeniørfirma, der yder rådgivning indenfor bl.a:* forureningsundersøgelser og udarbejdelse af risikovurderinger.* oprensning af…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchSignal Hill, CA, United StatesHQ recorded Nov 6, 2026201-500234 contacts →

Exact match

“Patriot Environmental Services, a Crystal Clean company, is a leading environmental service provider with clients throughout the Southwestern United States.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchSantiago, ChileHQ recorded Nov 6, 2026201-500219 contacts →

Exact match

“SGA S.A.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 7,195 environmental auditing consultants worldwide

See the full list, filter by size, metro and specialty, and access 22,632 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Environmental auditing consultants worldwide at a glance

As of Nov 6, 2026
31.9%Verified-email coverage
9.9Average contacts per company
1-10Median size (employees)
1.7%Largest-city concentration · Sao Paulo
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
4,656
11-50
1,977
51-200
382
201-500
85
501-1,000
16
1,001-5,000
16
5,001-10,000
1
10001+
4

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 auditing consultants are linked below.
What qualifies
Company records worldwide whose business descriptions match “environmental auditing consultants” 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 22,632 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 November 6, 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 auditing consultants by location

32 lists · largest first

Every Environmental auditing consultants 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 auditing consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many environmental auditing consultants are there worldwide?

RevenueBase identified 7,195 company matches for environmental auditing consultants worldwide as of November 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?

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

Which country has the most environmental auditing consultants?

The United States leads with 1,458 companies, followed by Brazil (1,233) and India (282). Every environmental auditing consultants list by country and city is linked on this page.

Which city has the most environmental auditing consultants?

Sao Paulo leads with 121 company records, followed by Belo Horizonte (56) and Rio De Janeiro (46).

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 22,632 professional contacts with verified work emails tracked across these 7,195 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 November 6, 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.