Company lists · Data refreshed October 2026

Top 25 Industrial hygiene assessment services based in the United States

RevenueBase identified 1,395 company matches for industrial hygiene assessment services associated with the United States as of October 2026 and tracks 20,870 professional contacts across them, including 7,533 with verified work emails. Houston is the largest hub.

This list covers company matches for industrial hygiene assessment services 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 October 16, 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 Oct 16, 2026 How this list was built
1,395Companies
20,870Contacts tracked
7,533Verified emails
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The 25 largest industrial hygiene assessment services based in the United States

Ranked by team size
Top 25 of 1,395 company matches for industrial hygiene assessment services based in the United States, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchPasadena, TX, United StatesHQ recorded Oct 16, 20261,001-5,0002,675 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
2Exact matchSt. Paul, MN, United StatesHQ recorded Oct 16, 20261,001-5,000658 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
3Exact matchBurlington, MA, United StatesHQ recorded Oct 16, 2026501-1,000542 contacts →

Exact match

“For 35 years we have been helping investors, lenders, owners, developers, contractors, and property managers reduce risk and optimize their built facilities, infrastructure and…”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
4Exact matchMemphis, TN, United StatesHQ recorded Oct 16, 2026201-500460 contacts →

Exact match

“Innovation is not happenstance at EnSafe Inc.”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
5Exact matchKimberton, PA, United StatesHQ recorded Oct 16, 2026201-500373 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
6Exact matchOverland Park, KS, United StatesHQ recorded Oct 16, 2026201-500302 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 · Oct 16, 2026 · View company records in RevenueBase
7Exact matchHouston, TX, United StatesHQ recorded Oct 16, 2026201-500272 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 · Oct 16, 2026 · View company records in RevenueBase
8Exact matchUnion, NJ, United StatesHQ recorded Oct 16, 2026201-500209 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 · Oct 16, 2026 · View company records in RevenueBase
9Exact matchIndianapolis, IN, United StatesHQ recorded Oct 16, 202651-200194 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
10Exact matchHayward, CA, United StatesHQ recorded Oct 16, 202651-200168 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 · Oct 16, 2026 · View company records in RevenueBase
11Exact matchNewton, MA, United StatesHQ recorded Oct 16, 202651-200164 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 · Oct 16, 2026 · View company records in RevenueBase
12Exact matchDeer Park, TX, United StatesHQ recorded Oct 16, 20261,001-5,000150 contacts →

Exact match

“QualSpec is a leading industrial inspection firm headquartered in Houston, Texas.”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
13Exact matchFort Collins, CO, United StatesHQ recorded Oct 16, 202651-200147 contacts →

Exact match

“Ensero Solutions is an environmental consulting and remediation business with specific expertise in environmental assessments and permitting solutions, mine water management…”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
14Exact matchDallas, TX, United StatesHQ recorded Oct 16, 202651-200140 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 · Oct 16, 2026 · View company records in RevenueBase
15Exact matchWashington Dc, MD, United StatesHQ recorded Oct 16, 202651-200124 contacts →

Exact match

“The Fire & Risk Alliance was created under four basic principles: TRUST – To be our clients trusted partner in maintaining and improving safety.”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
16Exact matchFalls Church, VA, United StatesHQ recorded Oct 16, 202611-50118 contacts →

Exact match

“Founded in 1939, AIHA is a nonprofit organization serving professionals dedicated to the anticipation, recognition, evaluation, control, and confirmation of environmental…”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
17Exact matchMorrisville, NC, United StatesHQ recorded Oct 16, 202651-200114 contacts →

Exact match

“The EI Group, Inc.(EI) is an environmental, health and safety consulting firm headquartered in Research Triangle Park, North Carolina, with branch offices strategically located…”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
18Exact matchDelray Beach, FL, United StatesHQ recorded Oct 16, 202651-200114 contacts →

Exact match

“GFA International, Inc.(GFA) is a full-service Engineering consulting organization providing Environmental Consulting, Geotechnical Engineering, Construction Materials Testing…”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
19Exact matchAustin, TX, United StatesHQ recorded Oct 16, 202651-200109 contacts →

Exact match

“Since 1967, Joe W.”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
20Exact matchLansdale, PA, United StatesHQ recorded Oct 16, 202651-200105 contacts →

Exact match

“Compliance Management International (CMI) is a leading global provider of environmental, health, safety (EHS) and insurance loss prevention services.”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
21Exact matchChicago, IL, United StatesHQ recorded Oct 16, 202651-200100 contacts →

Exact match

“BBJ provides clients with solutions to environmental, health and safety problems.”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
22Exact matchOrange, CA, United StatesHQ recorded Oct 16, 202651-20099 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
23Exact matchSan Juan Capistrano, CA, United StatesHQ recorded Oct 16, 202651-20099 contacts →

Exact match

“Yorke Engineering, LLC (Yorke) was founded in 1996 and specializes in air quality, waste, storm water and industrial hygiene/safety services.”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
24Exact matchTempe, AZ, United StatesHQ recorded Oct 16, 202651-20097 contacts →

Exact match

“At Alta Environmental & Infrastructure (Alta EI), we partner with clients to build and protect what matters most, delivering comprehensive engineering, environmental, and health &…”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
25Exact matchMesa, AZ, United StatesHQ recorded Oct 16, 202651-20096 contacts →

Exact match

“Banda Group International (BGI), LLC is a world class technical and project management support services company serving government and private sector clients around the globe.”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase

Showing 25 of 1,395 industrial hygiene assessment services based in the United States

See the full list, filter by size, metro and specialty, and access 7,533 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Industrial hygiene assessment services based in the United States at a glance

As of Oct 16, 2026
36.1%Verified-email coverage
15.0Average contacts per company
1-10Median size (employees)
2.7%Largest-city concentration · Houston
Oct 16, 2026Page data refreshed

Companies by employee count

1-10
813
11-50
434
51-200
120
201-500
10
501-1,000
5
1,001-5,000
6
5,001-10,000
3
10001+
3

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 1,395 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 assessment services” 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 7,533 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.

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

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

RevenueBase identified 1,395 company matches for industrial hygiene assessment services associated with the United States 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?

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 assessment services?

Houston leads with 37 company records, followed by New York (27) and Chicago (18).

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 7,533 professional contacts with verified work emails tracked across these 1,395 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.