Company lists · Data refreshed September 2026

Top 25 Environmental monitoring companies worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 6,828 companies tracked

RevenueBase identified 6,828 environmental monitoring companies worldwide as of September 2026 and tracks 94,327 professional contacts across them, including 26,417 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers environmental monitoring 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 monitoring 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review

6,828Companies

94,327Contacts tracked

26,417Verified emails

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The 25 largest environmental monitoring companies worldwide

Ranked by team size

Top 25 of 6,828 environmental monitoring companies worldwide, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to environmental monitoring companies: 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	Pace Analytical Services	Indirect evidence	Minneapolis, MN, United StatesHQ checked Sep 19, 2026	1,001-5,000	2,228 contacts →
	Indirect evidence “Pace® Science and Technology Company makes the world a safer, healthier place.” Source: RevenueBase Database · checked Sep 19, 2026
2	Vaisala	Indirect evidence	Vantaa, FinlandHQ checked Sep 19, 2026	1,001-5,000	1,901 contacts →
	Indirect evidence “Vaisala is a global leader in measurement instruments and intelligence for climate action.” Source: RevenueBase Database · checked Sep 19, 2026
3	Alliance Technical Group	Partial evidence	Decatur, AL, United StatesHQ checked Sep 19, 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 19, 2026
4	Interagua Ecuador	Indirect evidence	Guayaquil, EcuadorHQ checked Sep 19, 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 19, 2026
5	Emsl Analytical, INC	Partial evidence	Cinnaminson, NJ, United StatesHQ checked Sep 19, 2026	501-1,000	719 contacts →
	Partial evidence “As the nation's leading environmental testing firm, EMSL's network of nationwide laboratories has been providing quality analytical services since 1981.” Source: RevenueBase Database · checked Sep 19, 2026
6	Envea Global	Indirect evidence	Poissy, FranceHQ checked Sep 19, 2026	501-1,000	639 contacts →
	Indirect evidence “ENVEA: Elevating Standards.” Source: RevenueBase Database · checked Sep 19, 2026
7	Cetrel	Partial evidence	Camaçari, BrazilHQ checked Sep 19, 2026	1,001-5,000	611 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 19, 2026
8	CARSO	Indirect evidence	Vénissieux, FranceHQ checked Sep 19, 2026	1,001-5,000	585 contacts →
	Indirect evidence “Leader des prestations analytiques environnementales et agroalimentaires accrédité COFRAC, agréé par le Ministère de la santé Votre environnement et votre santé sont nos priorités.” Source: RevenueBase Database · checked Sep 19, 2026
9	CTA Engenharia	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 19, 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 19, 2026
10	Particle Measuring Systems	Partial evidence	Niwot, CO, United StatesHQ checked Sep 19, 2026	501-1,000	483 contacts →
	Partial evidence “Overview Particle Measuring Systems sets the standard for contamination monitoring.” Source: RevenueBase Database · checked Sep 19, 2026
11	Vertex Resource Group LTD	Partial evidence	Sherwood Park, AB, CanadaHQ checked Sep 19, 2026	1,001-5,000	471 contacts →
	Partial evidence “Since 1962, Vertex has been a leading North American provider of environmental services.” Source: RevenueBase Database · checked Sep 19, 2026
12	ROUX	Partial evidence	Islandia, NY, United StatesHQ checked Sep 19, 2026	201-500	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, 2026
13	National Environment Management Authority	Indirect evidence	KenyaHQ checked Sep 19, 2026	501-1,000	398 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
14	HECS	Partial evidence	Chennai, IndiaHQ checked Sep 19, 2026	1,001-5,000	356 contacts →
	Partial evidence “We are India’s Leading Environmental Management Company and Service Provider, serving as a catalyst to the cause of Environmental preservation for the Industrial and Domestic…” Source: RevenueBase Database · checked Sep 19, 2026
15	Ceimic	Indirect evidence	Sumaré, BrazilHQ checked Sep 19, 2026	201-500	325 contacts →
	Indirect evidence “Life Sciences Testing Group” Source: RevenueBase Database · checked Sep 19, 2026
16	Mesa Laboratories, INC	Partial evidence	Lakewood, CO, United StatesHQ checked Sep 19, 2026	501-1,000	323 contacts →
	Partial evidence “Mesa Labs helps you monitor and maintain higher standards in any environment – from the air we breathe to the critical moments of life-saving care.” Source: RevenueBase Database · checked Sep 19, 2026
17	Picarro	Indirect evidence	Santa Clara, CA, United StatesHQ checked Sep 19, 2026	201-500	297 contacts →
	Indirect evidence “Reducing emissions, detecting leaks, mitigating risk, optimizing operations, ensuring compliance and advancing research are some of the challenges facing our clients.” Source: RevenueBase Database · checked Sep 19, 2026
18	Labanalysis Environmental Science	Partial evidence	San Giovanni Teatino, ItalyHQ checked Sep 19, 2026	501-1,000	293 contacts →
	Partial evidence “LabAnalysis Environmental Science is LabAnalysis Group's company dedicated to the environmental sector.” Source: RevenueBase Database · checked Sep 19, 2026
19	Pine Environmental Services LLC	Indirect evidence	Windsor, NJ, United StatesHQ checked Sep 19, 2026	201-500	292 contacts →
	Indirect evidence “Pine is the leading provider of rental equipment in the U.S.” Source: RevenueBase Database · checked Sep 19, 2026
20	Pattle Delamore Partners	Partial evidence	Auckland, New ZealandHQ checked Sep 19, 2026	201-500	277 contacts →
	Partial evidence “PDP is one of Aotearoa New Zealand’s leading environmental science, engineering, and advisory consultancies.” Source: RevenueBase Database · checked Sep 19, 2026
21	Jbs&g	Partial evidence	Sydney, AustraliaHQ checked Sep 19, 2026	201-500	262 contacts →
	Partial evidence “Established in 1996, JBS & G is one of Australia’s leading environmental consultancies with offices in Sydney, Melbourne, Perth, Adelaide, Brisbane, Canberra, Darwin, Wollongong…” Source: RevenueBase Database · checked Sep 19, 2026
22	GSI Environmental INC	Partial evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	201-500	259 contacts →
	Partial evidence “GSI Environmental, Inc.(GSI), is an environmental engineering and science consulting firm committed to measuring, analyzing, and solving complex environmental problems around the…” Source: RevenueBase Database · checked Sep 19, 2026
23	Alpha Analytical	Indirect evidence	Westborough, MA, United StatesHQ checked Sep 19, 2026	501-1,000	254 contacts →
	Indirect evidence “Since 1987, Alpha Analytical, Inc.” Source: RevenueBase Database · checked Sep 19, 2026
24	Applus Environment	Partial evidence	Madrid, SpainHQ checked Sep 19, 2026	10001+	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, 2026
25	Sperosens	Strong evidence	Centurion, South AfricaHQ checked Sep 19, 2026	201-500	250 contacts →
	Strong evidence “Sperosens provides Environmental Monitoring and Fire Protection solutions to the African mining industry and has done so with an impeccable track record for 30 years.” Source: RevenueBase Database · checked Sep 19, 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 monitoring 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 monitoring companies.
Partial evidence: Its own public description names part of environmental monitoring companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name environmental monitoring 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 6,828 environmental monitoring companies worldwide

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Environmental monitoring companies worldwide at a glance

As of Sep 19, 2026

28.0%Verified-email coverage

13.8Average contacts per company

1-10Median size (employees)

0.9%Largest-city concentration · Sao Paulo

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

3,539

11-50

2,379

51-200

653

201-500

156

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 monitoring 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 monitoring companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “environmental monitoring 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 monitoring 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 monitoring 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, 26,417 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 monitoring companies by location

32 lists · largest first

Every Environmental monitoring 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 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 monitoring 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 monitoring companies are there worldwide?

RevenueBase identified 6,828 environmental monitoring 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?

Pace Analytical Services, headquartered in Minneapolis, tops this list with the largest team on record.

Which country has the most environmental monitoring companies?

The United States leads with 1,744 companies, followed by Brazil (621) and India (314). Every environmental monitoring companies list by country and city is linked on this page.

Which city has the most environmental monitoring companies?

Sao Paulo leads with 63 headquartered companies, followed by Houston (47) and Calgary (33).

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 26,417 verified decision-maker contacts tracked across these 6,828 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.

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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.