Company lists · Data refreshed October 2026
Top 25 Industrial hygiene firms based in the United States
RevenueBase identified 3,410 company matches for industrial hygiene firms associated with the United States as of October 2026 and tracks 54,016 professional contacts across them, including 21,350 with verified work emails. Houston is the largest hub.
This list covers company matches for industrial hygiene firms 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.
The 25 largest industrial hygiene firms based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 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 | |||||
| 2 | 1,683 contacts → | ||||
Exact match “J.” Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase | |||||
| 3 | 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 | |||||
| 4 | 1,266 contacts → | ||||
Exact match “Who is Apex?” Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase | |||||
| 5 | 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 | |||||
| 6 | 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 | |||||
| 7 | 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 | |||||
| 8 | 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 | |||||
| 9 | 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 | |||||
| 10 | 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 | |||||
| 11 | 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 | |||||
| 12 | 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 | |||||
| 13 | 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 | |||||
| 14 | 331 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase | |||||
| 15 | 326 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 · Oct 16, 2026 · View company records in RevenueBase | |||||
| 16 | 302 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 | |||||
| 17 | 272 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 | |||||
| 18 | 260 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 · Oct 16, 2026 · View company records in RevenueBase | |||||
| 19 | 248 contacts → | ||||
Exact match “Alliance is one of the most experienced and trusted environmental contractors in California.” Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase | |||||
| 20 | 244 contacts → | ||||
Exact match “Environmental Works, Inc.(EWI) offers truly comprehensive environmental solutions for a variety of industries, businesses, and municipalities.” Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase | |||||
| 21 | 222 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 · Oct 16, 2026 · View company records in RevenueBase | |||||
| 22 | 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 · Oct 16, 2026 · View company records in RevenueBase | |||||
| 23 | 205 contacts → | ||||
Exact match “Risk Management.” Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase | |||||
| 24 | 196 contacts → | ||||
Exact match “American Integrated Services, Inc.(AIS) offers comprehensive solutions through environmental construction and remediation, industrial demolition, abatement, 24/7 emergency…” Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase | |||||
| 25 | 194 contacts → | ||||
Exact match Recorded description not available. 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 3,410 industrial hygiene firms based in the United States
See the full list, filter by size, metro and specialty, and access 21,350 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Industrial hygiene firms based in the United States at a glance
As of Oct 16, 2026Companies by employee count
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 3,410 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 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. 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 21,350 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 metro
- Industrial hygiene firms in Houston95
- Industrial hygiene firms in New York45
- Industrial hygiene firms in Chicago32
- Industrial hygiene firms in Denver31
- Industrial hygiene firms in Austin29
- Industrial hygiene firms in San Diego29
- Industrial hygiene firms in Dallas26
- Industrial hygiene firms in Indianapolis25
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 based in the United States?
RevenueBase identified 3,410 company matches for industrial hygiene firms 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 firms?
Houston leads with 95 company records, followed by New York (45) and Chicago (32).
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 21,350 professional contacts with verified work emails tracked across these 3,410 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.
Ready to reach these companies? Verified emails and direct dials for all 3,410 industrial hygiene firms based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Industrial hygiene firms by geography
- Industrial hygiene firms based in Melbourne, Australia
- Industrial hygiene firms based in Perth, Australia
- Industrial hygiene firms based in Sydney, Australia
- Industrial hygiene firms based in Belo Horizonte, Brazil
- Industrial hygiene firms based in Campinas, Brazil
- Industrial hygiene firms based in Curitiba, Brazil
- Industrial hygiene firms based in Rio De Janeiro, Brazil
- Industrial hygiene firms based in Sao Paulo, Brazil
- Industrial hygiene firms based in Calgary, Canada
- Industrial hygiene firms based in Edmonton, Canada
- Industrial hygiene firms based in Paris, France
- Industrial hygiene firms based in Milan, Italy
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Industrial hygiene firms based in Melbourne, Australia
- Industrial hygiene firms based in Perth, Australia
- Industrial hygiene firms based in Sydney, Australia
- Industrial hygiene firms based in Belo Horizonte, Brazil
- Industrial hygiene firms based in Campinas, Brazil
- Industrial hygiene firms based in Curitiba, Brazil
Company intelligence · public preview
Top 25 industrial hygiene firms based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 3,410 matching company records for industrial hygiene firms based in the United States, with 54,016 tracked contacts and 21,350 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: October 16, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 industrial hygiene firms based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Total Safetytotalsafety.comHQ: Pasadena, TX, United StatesReported employees: 1,001-5,000 | Pasadena, TX, United States | 1,001-5,000 | Exact match | 2,675 contacts → |
“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 description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  J. J. Keller & Associates, INCjjkeller.comHQ: Neenah, WI, United StatesReported employees: 1,001-5,000 | Neenah, WI, United States | 1,001-5,000 | Exact match | 1,683 contacts → |
“J.” Recorded description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Exponentexponent.comHQ: Menlo Park, CA, United StatesReported employees: 1,001-5,000 | Menlo Park, CA, United States | 1,001-5,000 | Exact match | 1,628 contacts → |
“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 description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Apex Companiesapexcos.comHQ: Rockville, MD, United StatesReported employees: 1,001-5,000 | Rockville, MD, United States | 1,001-5,000 | Exact match | 1,266 contacts → |
“Who is Apex?” Recorded description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Alliance Technical Groupalliancetg.comHQ: Decatur, AL, United StatesReported employees: 1,001-5,000 | Decatur, AL, United States | 1,001-5,000 | Exact match | 1,048 contacts → |
“Alliance is a new kind of environmental services company-powered by innovation, focused on service, and committed to client success.” Recorded description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  IEAieasafety.comHQ: Brooklyn Park, MN, United StatesReported employees: Not recorded | Brooklyn Park, MN, United States | Not recorded | Exact match | 1,001 contacts → |
“The Institute for Environmental Assessment, Inc.(IEA) is small business committed to providing trusted environmental safety consulting services for private and public…” Recorded description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Emsl Analytical, INCemsl.com HQ: Cinnaminson, NJ, United StatesReported employees: 501-1,000 | Cinnaminson, NJ, United States | 501-1,000 | Exact match | 753 contacts → |
“As the nation's leading environmental testing firm, EMSL's network of nationwide laboratories has been providing quality analytical services since 1981.” Recorded description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Antea Group USAanteagroup.comHQ: St. Paul, MN, United StatesReported employees: 1,001-5,000 | St. Paul, MN, United States | 1,001-5,000 | Exact match | 658 contacts → |
“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 description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Trihydro Corporationtrihydro.comHQ: Laramie, WY, United StatesReported employees: 501-1,000 | Laramie, WY, United States | 501-1,000 | Exact match | 570 contacts → |
“Headquartered in Laramie, Wyoming, Trihydro provides environmental consulting, engineering and surveying, air quality and process management, information technology, and water and…” Recorded description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Rincon Consultantsrinconconsultants.comHQ: Ventura, CA, United StatesReported employees: 501-1,000 | Ventura, CA, United States | 501-1,000 | Exact match | 502 contacts → |
“Rincon Consultants is a multidisciplinary environmental, planning, and advisory firm.” Recorded description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  ROUXrouxinc.comHQ: Islandia, NY, United StatesReported employees: 201-500 | Islandia, NY, United States | 201-500 | Exact match | 468 contacts → |
“Founded 40 years ago, Roux is recognized for being a highly effective, client-focused environmental consulting and management firm.” Recorded description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Ensafeensafe.comHQ: Memphis, TN, United StatesReported employees: 201-500 | Memphis, TN, United States | 201-500 | Exact match | 460 contacts → |
“Innovation is not happenstance at EnSafe Inc.” Recorded description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  All4all4inc.comHQ: Kimberton, PA, United StatesReported employees: 201-500 | Kimberton, PA, United States | 201-500 | Exact match | 373 contacts → |
“ALL4 is a global consulting firm committed to shaping a sustainable future through innovative environmental, health, and safety (EHS) and digital solutions.” Recorded description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Integral Consulting INCintegral-corp.comHQ: Boulder, CO, United StatesReported employees: 201-500 | Boulder, CO, United States | 201-500 | Exact match | 331 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 15 |  Mesa Laboratories, INCmesalabs.comHQ: Lakewood, CO, United StatesReported employees: 501-1,000 | Lakewood, CO, United States | 501-1,000 | Exact match | 326 contacts → |
“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 description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Examineticsexaminetics.comHQ: Overland Park, KS, United StatesReported employees: 201-500 | Overland Park, KS, United States | 201-500 | Exact match | 302 contacts → |
“Examinetics is the leading provider of occupational health solutions, offering services across the entire employee lifecycle with several delivery methods.” Recorded description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  GSI Environmental INCgsienv.comHQ: Houston, TX, United StatesReported employees: 201-500 | Houston, TX, United States | 201-500 | Exact match | 272 contacts → |
“GSI Environmental, Inc.(GSI), is an environmental engineering and science consulting firm committed to measuring, analyzing, and solving complex environmental problems around the…” Recorded description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Ancon Servicesanconservices.comHQ: Los Alamitos, CA, United StatesReported employees: 501-1,000 | Los Alamitos, CA, United States | 501-1,000 | Exact match | 260 contacts → |
“Founded in 1968, Ancon Services has expanded our services to cover virtually all of our clients industrial and environmental needs.” Recorded description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Alliance Environmental Group, LLCalliance-enviro.comHQ: Azusa, CA, United StatesReported employees: 501-1,000 | Azusa, CA, United States | 501-1,000 | Exact match | 248 contacts → |
“Alliance is one of the most experienced and trusted environmental contractors in California.” Recorded description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Environmental Works, INCenvironmentalworks.comHQ: Springfield, MO, United StatesReported employees: 201-500 | Springfield, MO, United States | 201-500 | Exact match | 244 contacts → |
“Environmental Works, Inc.(EWI) offers truly comprehensive environmental solutions for a variety of industries, businesses, and municipalities.” Recorded description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  CTEHcteh.comHQ: North Little Rock, AR, United StatesReported employees: 201-500 | North Little Rock, AR, United States | 201-500 | Exact match | 222 contacts → |
“CTEH, LLC's purpose is preparing for and responding to a company's or community’s worst day.” Recorded description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Hillmann Consulting, LLChillmann.comHQ: Union, NJ, United StatesReported employees: 201-500 | Union, NJ, United States | 201-500 | Exact match | 209 contacts → |
“Hillmann has been a well-recognized leader in the Environmental Health & Safety, Due Diligence & Remediation Management, and Construction Services industries since 1985.” Recorded description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Bakerriskbakerrisk.comHQ: San Antonio, TX, United StatesReported employees: 201-500 | San Antonio, TX, United States | 201-500 | Exact match | 205 contacts → |
“Risk Management.” Recorded description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  American Integrated Services, INCamericanintegrated.comHQ: Wilimington, United StatesReported employees: 201-500 | Wilimington, United States | 201-500 | Exact match | 196 contacts → |
“American Integrated Services, Inc.(AIS) offers comprehensive solutions through environmental construction and remediation, industrial demolition, abatement, 24/7 emergency…” Recorded description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  August Mack Environmental, INCaugustmack.comHQ: Indianapolis, IN, United StatesReported employees: 51-200 | Indianapolis, IN, United States | 51-200 | Exact match | 194 contacts → |
No recorded description excerpt is available for this public record. | |||||
Showing 25 of 3,410 company matches
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Industrial hygiene firms: dataset insights
October 16, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
3,405 records in the displayed employee bands.
5 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 3,410 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: October 16, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Industrial hygiene firms by metro
- Industrial hygiene firms in Houston95
- Industrial hygiene firms in New York45
- Industrial hygiene firms in Chicago32
- Industrial hygiene firms in Denver31
- Industrial hygiene firms in Austin29
- Industrial hygiene firms in San Diego29
- Industrial hygiene firms in Dallas26
- Industrial hygiene firms in Indianapolis25
Questions about this company list
What does Exact match mean for industrial hygiene firms?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many industrial hygiene firms did RevenueBase find based in the United States?
The saved snapshot records 3,410 matching company records, 54,016 tracked contacts and 21,350 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: October 16, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Industrial hygiene firms by geography
- Industrial hygiene firms based in Melbourne, Australia
- Industrial hygiene firms based in Perth, Australia
- Industrial hygiene firms based in Sydney, Australia
- Industrial hygiene firms based in Belo Horizonte, Brazil
- Industrial hygiene firms based in Campinas, Brazil
- Industrial hygiene firms based in Curitiba, Brazil
- Industrial hygiene firms based in Rio De Janeiro, Brazil
- Industrial hygiene firms based in Sao Paulo, Brazil
- Industrial hygiene firms based in Calgary, Canada
- Industrial hygiene firms based in Edmonton, Canada
- Industrial hygiene firms based in Paris, France
- Industrial hygiene firms based in Milan, Italy
Cite this list
RevenueBase Data Team. Top 25 industrial hygiene firms based in the United States. Snapshot: October 16, 2026. https://revenuebase.ai/companies/industrial-hygiene-firms/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Industrial hygiene firms based in Melbourne, Australia
- Industrial hygiene firms based in Perth, Australia
- Industrial hygiene firms based in Sydney, Australia
- Industrial hygiene firms based in Belo Horizonte, Brazil
- Industrial hygiene firms based in Campinas, Brazil
- Industrial hygiene firms based in Curitiba, Brazil
Company intelligence · public preview
Top 25 industrial hygiene firms based in the United States
RevenueBase records 3,410 matching company records for industrial hygiene firms based in the United States, with 54,016 tracked contacts and 21,350 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: October 16, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 industrial hygiene firms based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Total Safetytotalsafety.com HQ: Pasadena, TX, United StatesReported employees: 1,001-5,000 | Pasadena, TX, United States | 1,001-5,000 | Exact match | 2,675 contacts → |
“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 description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | J. J. Keller & Associates, INCjjkeller.com HQ: Neenah, WI, United StatesReported employees: 1,001-5,000 | Neenah, WI, United States | 1,001-5,000 | Exact match | 1,683 contacts → |
“J.” Recorded description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Exponentexponent.com HQ: Menlo Park, CA, United StatesReported employees: 1,001-5,000 | Menlo Park, CA, United States | 1,001-5,000 | Exact match | 1,628 contacts → |
“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 description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Apex Companiesapexcos.com HQ: Rockville, MD, United StatesReported employees: 1,001-5,000 | Rockville, MD, United States | 1,001-5,000 | Exact match | 1,266 contacts → |
“Who is Apex?” Recorded description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Alliance Technical Groupalliancetg.com HQ: Decatur, AL, United StatesReported employees: 1,001-5,000 | Decatur, AL, United States | 1,001-5,000 | Exact match | 1,048 contacts → |
“Alliance is a new kind of environmental services company-powered by innovation, focused on service, and committed to client success.” Recorded description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | IEAieasafety.com HQ: Brooklyn Park, MN, United StatesReported employees: Not recorded | Brooklyn Park, MN, United States | Not recorded | Exact match | 1,001 contacts → |
“The Institute for Environmental Assessment, Inc.(IEA) is small business committed to providing trusted environmental safety consulting services for private and public…” Recorded description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Emsl Analytical, INCemsl.com HQ: Cinnaminson, NJ, United StatesReported employees: 501-1,000 | Cinnaminson, NJ, United States | 501-1,000 | Exact match | 753 contacts → |
“As the nation's leading environmental testing firm, EMSL's network of nationwide laboratories has been providing quality analytical services since 1981.” Recorded description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Antea Group USAanteagroup.com HQ: St. Paul, MN, United StatesReported employees: 1,001-5,000 | St. Paul, MN, United States | 1,001-5,000 | Exact match | 658 contacts → |
“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 description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Trihydro Corporationtrihydro.com HQ: Laramie, WY, United StatesReported employees: 501-1,000 | Laramie, WY, United States | 501-1,000 | Exact match | 570 contacts → |
“Headquartered in Laramie, Wyoming, Trihydro provides environmental consulting, engineering and surveying, air quality and process management, information technology, and water and…” Recorded description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Rincon Consultantsrinconconsultants.com HQ: Ventura, CA, United StatesReported employees: 501-1,000 | Ventura, CA, United States | 501-1,000 | Exact match | 502 contacts → |
“Rincon Consultants is a multidisciplinary environmental, planning, and advisory firm.” Recorded description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | ROUXrouxinc.com HQ: Islandia, NY, United StatesReported employees: 201-500 | Islandia, NY, United States | 201-500 | Exact match | 468 contacts → |
“Founded 40 years ago, Roux is recognized for being a highly effective, client-focused environmental consulting and management firm.” Recorded description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Ensafeensafe.com HQ: Memphis, TN, United StatesReported employees: 201-500 | Memphis, TN, United States | 201-500 | Exact match | 460 contacts → |
“Innovation is not happenstance at EnSafe Inc.” Recorded description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | All4all4inc.com HQ: Kimberton, PA, United StatesReported employees: 201-500 | Kimberton, PA, United States | 201-500 | Exact match | 373 contacts → |
“ALL4 is a global consulting firm committed to shaping a sustainable future through innovative environmental, health, and safety (EHS) and digital solutions.” Recorded description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Integral Consulting INCintegral-corp.com HQ: Boulder, CO, United StatesReported employees: 201-500 | Boulder, CO, United States | 201-500 | Exact match | 331 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 15 | Mesa Laboratories, INCmesalabs.com HQ: Lakewood, CO, United StatesReported employees: 501-1,000 | Lakewood, CO, United States | 501-1,000 | Exact match | 326 contacts → |
“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 description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Examineticsexaminetics.com HQ: Overland Park, KS, United StatesReported employees: 201-500 | Overland Park, KS, United States | 201-500 | Exact match | 302 contacts → |
“Examinetics is the leading provider of occupational health solutions, offering services across the entire employee lifecycle with several delivery methods.” Recorded description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | GSI Environmental INCgsienv.com HQ: Houston, TX, United StatesReported employees: 201-500 | Houston, TX, United States | 201-500 | Exact match | 272 contacts → |
“GSI Environmental, Inc.(GSI), is an environmental engineering and science consulting firm committed to measuring, analyzing, and solving complex environmental problems around the…” Recorded description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Ancon Servicesanconservices.com HQ: Los Alamitos, CA, United StatesReported employees: 501-1,000 | Los Alamitos, CA, United States | 501-1,000 | Exact match | 260 contacts → |
“Founded in 1968, Ancon Services has expanded our services to cover virtually all of our clients industrial and environmental needs.” Recorded description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Alliance Environmental Group, LLCalliance-enviro.com HQ: Azusa, CA, United StatesReported employees: 501-1,000 | Azusa, CA, United States | 501-1,000 | Exact match | 248 contacts → |
“Alliance is one of the most experienced and trusted environmental contractors in California.” Recorded description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Environmental Works, INCenvironmentalworks.com HQ: Springfield, MO, United StatesReported employees: 201-500 | Springfield, MO, United States | 201-500 | Exact match | 244 contacts → |
“Environmental Works, Inc.(EWI) offers truly comprehensive environmental solutions for a variety of industries, businesses, and municipalities.” Recorded description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | CTEHcteh.com HQ: North Little Rock, AR, United StatesReported employees: 201-500 | North Little Rock, AR, United States | 201-500 | Exact match | 222 contacts → |
“CTEH, LLC's purpose is preparing for and responding to a company's or community’s worst day.” Recorded description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Hillmann Consulting, LLChillmann.com HQ: Union, NJ, United StatesReported employees: 201-500 | Union, NJ, United States | 201-500 | Exact match | 209 contacts → |
“Hillmann has been a well-recognized leader in the Environmental Health & Safety, Due Diligence & Remediation Management, and Construction Services industries since 1985.” Recorded description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Bakerriskbakerrisk.com HQ: San Antonio, TX, United StatesReported employees: 201-500 | San Antonio, TX, United States | 201-500 | Exact match | 205 contacts → |
“Risk Management.” Recorded description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | American Integrated Services, INCamericanintegrated.com HQ: Wilimington, United StatesReported employees: 201-500 | Wilimington, United States | 201-500 | Exact match | 196 contacts → |
“American Integrated Services, Inc.(AIS) offers comprehensive solutions through environmental construction and remediation, industrial demolition, abatement, 24/7 emergency…” Recorded description excerpt · October 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | August Mack Environmental, INCaugustmack.com HQ: Indianapolis, IN, United StatesReported employees: 51-200 | Indianapolis, IN, United States | 51-200 | Exact match | 194 contacts → |
No recorded description excerpt is available for this public record. | |||||
Showing 25 of 3,410 company matches
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Industrial hygiene firms: dataset insights
October 16, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
3,405 records in the displayed employee bands.
5 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 3,410 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: October 16, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Industrial hygiene firms by metro
- Industrial hygiene firms in Houston95
- Industrial hygiene firms in New York45
- Industrial hygiene firms in Chicago32
- Industrial hygiene firms in Denver31
- Industrial hygiene firms in Austin29
- Industrial hygiene firms in San Diego29
- Industrial hygiene firms in Dallas26
- Industrial hygiene firms in Indianapolis25
Questions about this company list
What does Exact match mean for industrial hygiene firms?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many industrial hygiene firms did RevenueBase find based in the United States?
The saved snapshot records 3,410 matching company records, 54,016 tracked contacts and 21,350 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: October 16, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Industrial hygiene firms by geography
- Industrial hygiene firms based in Melbourne, Australia
- Industrial hygiene firms based in Perth, Australia
- Industrial hygiene firms based in Sydney, Australia
- Industrial hygiene firms based in Belo Horizonte, Brazil
- Industrial hygiene firms based in Campinas, Brazil
- Industrial hygiene firms based in Curitiba, Brazil
- Industrial hygiene firms based in Rio De Janeiro, Brazil
- Industrial hygiene firms based in Sao Paulo, Brazil
- Industrial hygiene firms based in Calgary, Canada
- Industrial hygiene firms based in Edmonton, Canada
- Industrial hygiene firms based in Paris, France
- Industrial hygiene firms based in Milan, Italy
Cite this list
RevenueBase Data Team. Top 25 industrial hygiene firms based in the United States. Snapshot: October 16, 2026. https://revenuebase.ai/companies/industrial-hygiene-firms/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
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- Industrial hygiene firms based in Melbourne, Australia
- Industrial hygiene firms based in Perth, Australia
- Industrial hygiene firms based in Sydney, Australia
- Industrial hygiene firms based in Belo Horizonte, Brazil
- Industrial hygiene firms based in Campinas, Brazil
- Industrial hygiene firms based in Curitiba, Brazil