Company lists · Data refreshed September 2026
Top 25 Environmental audit companies worldwide
RevenueBase identified 2,308 environmental audit companies worldwide as of September 2026 and tracks 18,626 professional contacts across them, including 5,433 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.
This list covers environmental audit companies 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 19, 2026. Country and city lists for environmental audit companies 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.
The 25 largest environmental audit companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 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 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 433 contacts → | ||||
Partial evidence “Founded 40 years ago, Roux is recognized for being a highly effective, client-focused environmental consulting and management firm.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 293 contacts → | ||||
Partial evidence “LabAnalysis Environmental Science is LabAnalysis Group's company dedicated to the environmental sector.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 252 contacts → | ||||
Partial evidence “At Applus+, we provide environmental management services to help clients reduce their environmental footprint and improve operational efficiency, while minimizing risks and…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 234 contacts → | ||||
Indirect evidence “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.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 234 contacts → | ||||
Indirect evidence “A WALM Engenharia e Tecnologia Ambiental Ltda.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 195 contacts → | ||||
Indirect evidence “Gestión Ambiental Consultores S.A.(GAC) es una empresa de consultoría ambiental fundada en 1991 que presta servicios en distintas áreas de la gestión ambiental para los…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 158 contacts → | ||||
Partial evidence “Keystone Environmental is a proudly Canadian (owned and operated) full service environmental consultancy helping businesses meet their environmental goals and objectives.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 156 contacts → | ||||
Indirect evidence “Somamos a experiência e a agilidade que você precisa para desenvolver os estudos necessários para o licenciamento ambiental e gestão do seu empreendimento.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 152 contacts → | ||||
Indirect evidence “Since its founding in 1972, CleanAir has an established reputation for excellence on projects of all sizes, ranging from boiler, APC equipment and cooling tower efficiency testing…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 142 contacts → | ||||
Indirect evidence “Vardan EnviroNet is an organization of senior state and central government retired officers from various departments like Pollution Control Board, Mines & Geology, Public Sector…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 140 contacts → | ||||
Partial evidence “Since the passage of original environmental legislation nearly four decades ago, both private and public industry have turned to Mostardi Platt for guidance in complying with air…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 137 contacts → | ||||
Indirect evidence “CPEA - Consultoria Paulista de Estudos Ambientais is a limited liability company, founded on October 15th, with headquarter in the city of São Paulo.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 136 contacts → | ||||
Partial evidence “OUR MISSION is to combine sustainable environmental solutions with forward-thinking, cost-effective, innovative, and value-added technologies that balance our clients’ economic…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 111 contacts → | ||||
Partial evidence “NETEL (INDIA) Limited, a part of Neterwala Group of Companies is one of the leading organizations in India in the field of Analytical Instruments, Environmental Instruments…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 16 | 105 contacts → | ||||
Partial evidence “Associated Environmental Consultants are experts in environmental science and management with a passion for our work, our communities, and our environment.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 103 contacts → | ||||
Partial evidence “Hart & Hickman PC provides environmental consulting services to commercial, industrial, and governmental clients throughout the Southeast US.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 98 contacts → | ||||
Partial evidence “Public agencies and businesses have been relying on Chambers Group to keep them in compliance with applicable federal, state, and/or local environmental laws, regulations, and…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 97 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 94 contacts → | ||||
Partial evidence “Aspen Environmental Group is an expert interdisciplinary environmental impact analysis firm, specializing in the management of environmental assessment efforts under CEQA, NEPA…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 92 contacts → | ||||
Indirect evidence “Yorke Engineering, LLC (Yorke) was founded in 1996 and specializes in air quality, waste, storm water and industrial hygiene/safety services.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 81 contacts → | ||||
Partial evidence “Techknowgreen Solutions Limited is a leading environmental consulting firm in India with 24+ years of expertise in regulatory compliance, cutting-edge technology, and IT solutions.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 78 contacts → | ||||
Indirect evidence “En PROTERM S.A.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 73 contacts → | ||||
Partial evidence “TEREA is a professional environmental consulting company specialized in environment and sustainable management of natural resources.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 25 | 72 contacts → | ||||
Partial evidence “is an environmental services company based out of 88931,2CE,4CDE,5DEC2,6CD,7,8DE,9CDE,10,43CD,4,7D,10CE, China.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
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 audit companies. 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 audit companies.
- Partial evidence
- Its own public description names part of environmental audit companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name environmental audit companies. 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 2,308 environmental audit companies worldwide
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 5,433 reachable decision-makers.
Free signup · no credit card
Environmental audit companies worldwide at a glance
As of Sep 19, 2026Companies by employee count
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 audit companies, 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 audit companies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “environmental audit companies”. 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 audit companies), 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 audit companies, 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, 5,433 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 19, 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 audit companies by location
11 lists · largest firstEvery Environmental audit companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Environmental audit companies based in the United States445
- Environmental audit companies based in Brazil370
- Environmental audit companies based in India137
- Environmental audit companies based in Canada66
- Environmental audit companies based in Chile64
- Environmental audit companies based in Australia60
- Environmental audit companies based in France58
- Environmental audit companies based in South Africa53
- Environmental audit companies based in the United Kingdom44
- Environmental audit companies based in Spain34
- Environmental audit companies based in Italy32
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 audit companies, 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 audit companies are there worldwide?
RevenueBase identified 2,308 environmental audit companies 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?
Alliance Technical Group, headquartered in Decatur, tops this list with the largest team on record.
Which country has the most environmental audit companies?
The United States leads with 445 companies, followed by Brazil (370) and India (137). Every environmental audit companies list by country and city is linked on this page.
Which city has the most environmental audit companies?
Sao Paulo leads with 33 headquartered companies, followed by Curitiba (16) and Houston (15).
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 5,433 verified decision-maker contacts tracked across these 2,308 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 19, 2026.
Ready to reach these companies? Verified emails and direct dials for all 2,308 environmental audit companies worldwide. Start with a free account, no credit card.
Download this list →Related lists
Browse the directory
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.