Company lists · Data refreshed October 2026

Top 25 Industrial hygiene firms worldwide

Name: Industrial hygiene firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 16, 2026 18,636 companies tracked

RevenueBase identified 18,636 company matches for industrial hygiene firms worldwide as of October 2026 and tracks 178,352 professional contacts across them, including 44,135 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for industrial hygiene 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 October 16, 2026. Country and city lists for industrial hygiene 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 Oct 16, 2026 How this list was built

18,636Companies

178,352Contacts tracked

44,135Verified emails

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The 25 largest industrial hygiene firms worldwide

Ranked by team size

Top 25 of 18,636 company matches for industrial hygiene firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 16, 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	Quirónprevención	Exact match	Madrid, SpainHQ recorded Oct 16, 2026	5,001-10,000	3,613 contacts →
	Exact match “Quirónprevención, perteneciente al Grupo Quirónsalud, es la mayor empresa del sector de la Prevención de Riesgos Laborales a nivel internacional.” Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
2	Total Safety	Exact match	Pasadena, TX, United StatesHQ recorded Oct 16, 2026	1,001-5,000	2,675 contacts →
	Exact match “Total Safety is the world's premier provider of integrated safety and compliance services and the products necessary to support them, including gas detection, respiratory…” Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
3	J. J. Keller & Associates, INC	Exact match	Neenah, WI, United StatesHQ recorded Oct 16, 2026	1,001-5,000	1,683 contacts →
	Exact match “J.” Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
4	Exponent	Exact match	Menlo Park, CA, United StatesHQ recorded Oct 16, 2026	1,001-5,000	1,628 contacts →
	Exact match “In an era of accelerating change, Exponent is the only premium engineering and scientific consulting firm with the depth and breadth of expertise to solve our clients’ most…” Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
5	Apex Companies	Exact match	Rockville, MD, United StatesHQ recorded Oct 16, 2026	1,001-5,000	1,266 contacts →
	Exact match “Who is Apex?” Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
6	Alliance Technical Group	Exact match	Decatur, AL, United StatesHQ recorded Oct 16, 2026	1,001-5,000	1,048 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 · Oct 16, 2026 · View company records in RevenueBase
7	IEA	Exact match	Brooklyn Park, MN, United StatesHQ recorded Oct 16, 2026	n/a	1,001 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 · Oct 16, 2026 · View company records in RevenueBase
8	Alpes Contrôles	Exact match	Sites, FranceHQ recorded Oct 16, 2026	501-1,000	824 contacts →
	Exact match “Alpes Contrôles accompagne ses clients sur la conformité réglementaire des ouvrages, installations, équipements produits et services soumis à des exigences réglementaires.” Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
9	Contract Resources PTY LTD	Exact match	Perth, United StatesHQ recorded Oct 16, 2026	501-1,000	761 contacts →
	Exact match “Contract Resources have been providing specialised industrial services for over 30 years to the heavy process industries in Australia, New Zealand and the Middle East.” Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
10	Emsl Analytical, INC	Exact match	Cinnaminson, NJ, United StatesHQ recorded Oct 16, 2026	501-1,000	753 contacts →
	Exact match “As the nation's leading environmental testing firm, EMSL's network of nationwide laboratories has been providing quality analytical services since 1981.” Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
11	Cualtis	Exact match	Madrid, SpainHQ recorded Oct 16, 2026	1,001-5,000	734 contacts →
	Exact match “Somos un Servicio de Prevención.” Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
12	Pinchin In Canada	Exact match	Mississauga, ON, CanadaHQ recorded Oct 16, 2026	1,001-5,000	723 contacts →
	Exact match “Pinchin Ltd.” Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
13	CTA Engenharia	Exact match	Rio De Janeiro, BrazilHQ recorded Oct 16, 2026	201-500	665 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 · Oct 16, 2026 · View company records in RevenueBase
14	Antea Group USA	Exact match	St. Paul, MN, United StatesHQ recorded Oct 16, 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 · Oct 16, 2026 · View company records in RevenueBase
15	HSE Integrated LTD	Exact match	Calgary, AB, CanadaHQ recorded Oct 16, 2026	501-1,000	597 contacts →
	Exact match “We are Canada's industrial safety service experts.” Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
16	ITGA	Exact match	Saint-grégoire, FranceHQ recorded Oct 16, 2026	501-1,000	574 contacts →
	Exact match “ITGA, entreprise nationale fondée en 1994, dont le siège social est situé à Rennes, accompagne depuis 30 ans, tous les professionnels dans la résolution optimale de leurs…” Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
17	Trihydro Corporation	Exact match	Laramie, WY, United StatesHQ recorded Oct 16, 2026	501-1,000	570 contacts →
	Exact match “Headquartered in Laramie, Wyoming, Trihydro provides environmental consulting, engineering and surveying, air quality and process management, information technology, and water and…” Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
18	MAS Prevención	Exact match	Zaragoza, SpainHQ recorded Oct 16, 2026	501-1,000	538 contacts →
	Exact match “We seek to offer a global vision of people's health, beyond their job position.” Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
19	LX Argentina S.A	Exact match	Buenos Aires, ArgentinaHQ recorded Oct 16, 2026	1,001-5,000	535 contacts →
	Exact match “We are a company that provides industrial cleaning, maintenance and induatrial hygiene.” Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
20	Rincon Consultants	Exact match	Ventura, CA, United StatesHQ recorded Oct 16, 2026	501-1,000	502 contacts →
	Exact match “Rincon Consultants is a multidisciplinary environmental, planning, and advisory firm.” Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
21	ROUX	Exact match	Islandia, NY, United StatesHQ recorded Oct 16, 2026	201-500	468 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 · Oct 16, 2026 · View company records in RevenueBase
22	Ensafe	Exact match	Memphis, TN, United StatesHQ recorded Oct 16, 2026	201-500	460 contacts →
	Exact match “Innovation is not happenstance at EnSafe Inc.” Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
23	All4	Exact match	Kimberton, PA, United StatesHQ recorded Oct 16, 2026	201-500	373 contacts →
	Exact match “ALL4 is a global consulting firm committed to shaping a sustainable future through innovative environmental, health, and safety (EHS) and digital solutions.” Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
24	Grupo Preving	Exact match	Badajoz, SpainHQ recorded Oct 16, 2026	1,001-5,000	372 contacts →
	Exact match “Grupo Preving es un grupo de empresas con vocación de liderazgo, en el que se integran un completo conjunto de disciplinas orientadas a mejorar la salud de los trabajadores y…” Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
25	Ecol Studio Lifeanalytics	Exact match	Lucca, ItalyHQ recorded Oct 16, 2026	201-500	364 contacts →
	Exact match “Salute, Sicurezza, Ambiente e Qualità del prodotto: sei davvero sostenibile?” Recorded in the RevenueBase company graph · Oct 16, 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 “industrial hygiene 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 18,636 industrial hygiene firms worldwide

See the full list, filter by size, metro and specialty, and access 44,135 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Industrial hygiene firms worldwide at a glance

As of Oct 16, 2026

24.7%Verified-email coverage

9.6Average contacts per company

1-10Median size (employees)

2.0%Largest-city concentration · Sao Paulo

Oct 16, 2026Page data refreshed

Companies by employee count

1-10

11,303

11-50

5,528

51-200

1,311

201-500

261

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 industrial hygiene firms are linked below.
What qualifies: Company records worldwide whose business descriptions match “industrial hygiene 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 44,135 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 October 16, 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.

Industrial hygiene firms by location

63 lists · largest first

Every Industrial hygiene 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 “industrial hygiene firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many industrial hygiene firms are there worldwide?

RevenueBase identified 18,636 company matches for industrial hygiene firms worldwide as of October 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?

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

Which country has the most industrial hygiene firms?

The United States leads with 3,410 companies, followed by Brazil (3,115) and Italy (1,392). Every industrial hygiene firms list by country and city is linked on this page.

Which city has the most industrial hygiene firms?

Sao Paulo leads with 380 company records, followed by Lima (169) and Rio De Janeiro (127).

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 44,135 professional contacts with verified work emails tracked across these 18,636 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 October 16, 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.