Company lists · Data refreshed September 2026

Top 25 Industrial hygiene companies based in the United States

Name: Industrial hygiene companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 2,496 companies tracked

RevenueBase identified 2,496 company matches for industrial hygiene companies associated with the United States as of September 2026 and tracks 35,789 professional contacts across them, including 13,053 with verified work emails. Houston is the largest hub.

This list covers company matches for industrial hygiene companies associated with the United States, 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 17, 2026.

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 17, 2026 How this list was built

2,496Companies

35,789Contacts tracked

13,053Verified emails

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The 25 largest industrial hygiene companies based in the United States

Ranked by team size

Top 25 of 2,496 company matches for industrial hygiene companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 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	Total Safety	Exact match	Pasadena, TX, United StatesHQ recorded Sep 17, 2026	1,001-5,000	2,650 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 · Sep 17, 2026 · View company records in RevenueBase
2	IEA	Exact match	Brooklyn Park, MN, United StatesHQ recorded Sep 17, 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 17, 2026 · View company records in RevenueBase
3	Antea Group USA	Exact match	St. Paul, MN, United StatesHQ recorded Sep 17, 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 17, 2026 · View company records in RevenueBase
4	Ensafe	Exact match	Memphis, TN, United StatesHQ recorded Sep 17, 2026	201-500	463 contacts →
	Exact match “Innovation is not happenstance at EnSafe Inc.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5	ROUX	Exact match	Islandia, NY, United StatesHQ recorded Sep 17, 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 17, 2026 · View company records in RevenueBase
6	CTEH	Exact match	North Little Rock, AR, United StatesHQ recorded Sep 17, 2026	201-500	336 contacts →
	Exact match “CTEH, LLC's purpose is preparing for and responding to a company's or community’s worst day.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7	All4	Exact match	Kimberton, PA, United StatesHQ recorded Sep 17, 2026	201-500	331 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 · Sep 17, 2026 · View company records in RevenueBase
8	Mesa Laboratories, INC	Exact match	Lakewood, CO, United StatesHQ recorded Sep 17, 2026	501-1,000	323 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	Examinetics	Exact match	Overland Park, KS, United StatesHQ recorded Sep 17, 2026	201-500	274 contacts →
	Exact match “Examinetics is the leading provider of occupational health solutions, offering services across the entire employee lifecycle with several delivery methods.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	GSI Environmental INC	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	201-500	259 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 · Sep 17, 2026 · View company records in RevenueBase
11	Ancon Services	Exact match	Los Alamitos, CA, United StatesHQ recorded Sep 17, 2026	501-1,000	248 contacts →
	Exact match “Founded in 1968, Ancon Services has expanded our services to cover virtually all of our clients industrial and environmental needs.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12	Justrite Safety Group	Exact match	Deerfield, IL, United StatesHQ recorded Sep 17, 2026	1,001-5,000	243 contacts →
	Exact match “Justrite Safety Group (JSG) manufactures and provides industrial safety solutions.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13	August Mack Environmental, INC	Exact match	Indianapolis, IN, United StatesHQ recorded Sep 17, 2026	51-200	210 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	Hillmann Consulting, LLC	Exact match	Union, NJ, United StatesHQ recorded Sep 17, 2026	201-500	209 contacts →
	Exact match “Hillmann has been a well-recognized leader in the Environmental Health & Safety, Due Diligence & Remediation Management, and Construction Services industries since 1985.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	Bakerrisk	Exact match	San Antonio, TX, United StatesHQ recorded Sep 17, 2026	201-500	202 contacts →
	Exact match “Risk Management.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	BAY West LLC	Exact match	St. Paul, MN, United StatesHQ recorded Sep 17, 2026	201-500	187 contacts →
	Exact match “Bay West is an environmental and industrial services provider for site investigations, groundwater and soil remediation, munitions cleanup, hazardous waste management, industrial…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	Enviroscience, INC	Exact match	Stow, OH, United StatesHQ recorded Sep 17, 2026	51-200	176 contacts →
	Exact match “EnviroScience is a team of over 150 expert biologists, commercial divers, environmental engineers, and environmental scientists that provides biomonitoring, environmental…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	Forensic Analytical Consulting Services, INC	Exact match	Hayward, CA, United StatesHQ recorded Sep 17, 2026	51-200	172 contacts →
	Exact match “With a staff of over 150 employees in the San Francisco, Sacramento, Los Angeles, San Diego, Modesto, Bakersfield, Fresno, Portland, Chicago, and Grand Rapids offices, Forensic…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19	Environmental Health & Engineering	Exact match	Newton, MA, United StatesHQ recorded Sep 17, 2026	51-200	170 contacts →
	Exact match “EH & E delivers integrated environmental, engineering, and health and safety solutions that help businesses and institutions safeguard their assets, improve operations and boost…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	Gradient	Exact match	Boston, MA, United StatesHQ recorded Sep 17, 2026	51-200	159 contacts →
	Exact match “Gradient is an environmental and risk science consulting firm renowned for our specialties in Toxicology, Epidemiology, Risk Assessment, Product Safety, Contaminant Fate and…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	Cleanair Engineering	Exact match	Palatine, IL, United StatesHQ recorded Sep 17, 2026	51-200	152 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22	Mostardi Platt	Exact match	Elmhurst, IL, United StatesHQ recorded Sep 17, 2026	51-200	140 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	E3 Environmental	Exact match	Clinton, MS, United StatesHQ recorded Sep 17, 2026	201-500	139 contacts →
	Exact match “E3 Environmental sets a high standard for environmental and industrial services, prioritizing safety, urgency, and efficiency.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	Waco, INC	Exact match	Sandston, VA, United StatesHQ recorded Sep 17, 2026	201-500	139 contacts →
	Exact match “Virginia's leading contractor for Industrial Mechanical Services, Asbestos Removal, Lead and Mold Remediation, Industrial Cleaning, Demolition, Insulation.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25	Ensolum, LLC	Exact match	Dallas, TX, United StatesHQ recorded Sep 17, 2026	51-200	136 contacts →
	Exact match “OUR MISSION is to combine sustainable environmental solutions with forward-thinking, cost-effective, innovative, and value-added technologies that balance our clients’ economic…” Recorded in the RevenueBase company graph · Sep 17, 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 companies”. 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 2,496 industrial hygiene companies based in the United States

See the full list, filter by size, metro and specialty, and access 13,053 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Industrial hygiene companies based in the United States at a glance

As of Sep 17, 2026

36.5%Verified-email coverage

14.3Average contacts per company

1-10Median size (employees)

2.6%Largest-city concentration · Houston

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

1,344

11-50

819

51-200

258

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 2,496 companies.

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.
What qualifies: Company records associated with the United States whose business descriptions match “industrial hygiene companies” 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 13,053 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 17, 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.

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 companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many industrial hygiene companies are there based in the United States?

RevenueBase identified 2,496 company matches for industrial hygiene companies associated with the United States 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?

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

Which city has the most industrial hygiene companies?

Houston leads with 66 company records, followed by New York (36) and Chicago (24).

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 13,053 professional contacts with verified work emails tracked across these 2,496 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 17, 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.