Company lists · Data refreshed September 2026
Top 25 Industrial hygiene consultancies based in the United States
RevenueBase identified 2,130 company matches for industrial hygiene consultancies associated with the United States as of September 2026 and tracks 35,225 professional contacts across them, including 14,172 with verified work emails. Houston is the largest hub.
This list covers company matches for industrial hygiene consultancies 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 28, 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 consultancies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 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 28, 2026 · View company records in RevenueBase | |||||
| 2 | 1,560 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 · Sep 28, 2026 · View company records in RevenueBase | |||||
| 3 | 1,137 contacts → | ||||
Exact match “Who is Apex?” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 4 | 1,088 contacts → | ||||
Exact match “Barr provides engineering and environmental consulting services to clients across the Midwest, throughout the Americas, and around the world.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 5 | 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 28, 2026 · View company records in RevenueBase | |||||
| 6 | 865 contacts → | ||||
Exact match “ATC Group Services LLC is now Atlas.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 7 | 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 28, 2026 · View company records in RevenueBase | |||||
| 8 | 577 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 · Sep 28, 2026 · View company records in RevenueBase | |||||
| 9 | 479 contacts → | ||||
Exact match “Rincon Consultants is a multi-disciplinary environmental sciences, planning, and engineering consulting firm that provides quality professional services to government and industry.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 10 | 463 contacts → | ||||
Exact match “Innovation is not happenstance at EnSafe Inc.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 11 | 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 28, 2026 · View company records in RevenueBase | |||||
| 12 | 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 28, 2026 · View company records in RevenueBase | |||||
| 13 | 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 28, 2026 · View company records in RevenueBase | |||||
| 14 | 210 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 15 | 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 28, 2026 · View company records in RevenueBase | |||||
| 16 | 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 28, 2026 · View company records in RevenueBase | |||||
| 17 | 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 28, 2026 · View company records in RevenueBase | |||||
| 18 | 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 28, 2026 · View company records in RevenueBase | |||||
| 19 | 152 contacts → | ||||
Exact match “Founded in 1988, KERAMIDA is a multidisciplinary Sustainability, EHS & Engineering consulting firm grounded in evidence-based research and development.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 20 | 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 28, 2026 · View company records in RevenueBase | |||||
| 21 | 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 28, 2026 · View company records in RevenueBase | |||||
| 22 | 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 28, 2026 · View company records in RevenueBase | |||||
| 23 | 130 contacts → | ||||
Exact match “We are a successful environment health and safety staffing/staff augmentation and consulting firm with services available worldwide.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 24 | 129 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 · Sep 28, 2026 · View company records in RevenueBase | |||||
| 25 | 126 contacts → | ||||
Exact match “Secorp Industries began in 1972 and is a safety company providing Respiratory Protection, Gas Monitoring and Detection, Rescue Services, Safety/Medical Consultants and Training to…” Recorded in the RevenueBase company graph · Sep 28, 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 consultancies”. 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 2,130 industrial hygiene consultancies based in the United States
See the full list, filter by size, metro and specialty, and access 14,172 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Industrial hygiene consultancies based in the United States at a glance
As of Sep 28, 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 2,130 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 consultancies” 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 14,172 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 28, 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 consultancies by metro
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 consultancies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many industrial hygiene consultancies are there based in the United States?
RevenueBase identified 2,130 company matches for industrial hygiene consultancies 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 consultancies?
Houston leads with 74 company records, followed by Chicago (26) and New York (26).
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 14,172 professional contacts with verified work emails tracked across these 2,130 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 28, 2026.
Ready to reach these companies? Verified emails and direct dials for all 2,130 industrial hygiene consultancies based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Industrial hygiene consultancies by geography
- Industrial hygiene consultancies based in Brisbane, Australia
- Industrial hygiene consultancies based in Melbourne, Australia
- Industrial hygiene consultancies based in Perth, Australia
- Industrial hygiene consultancies based in Sydney, Australia
- Industrial hygiene consultancies based in Belo Horizonte, Brazil
- Industrial hygiene consultancies based in Campinas, Brazil
- Industrial hygiene consultancies based in Curitiba, Brazil
- Industrial hygiene consultancies based in Porto Alegre, Brazil
- Industrial hygiene consultancies based in Rio De Janeiro, Brazil
- Industrial hygiene consultancies based in Sao Paulo, Brazil
- Industrial hygiene consultancies based in Calgary, Canada
- Industrial hygiene consultancies based in Paris, France
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 consultancies based in Brisbane, Australia
- Industrial hygiene consultancies based in Melbourne, Australia
- Industrial hygiene consultancies based in Perth, Australia
- Industrial hygiene consultancies based in Sydney, Australia
- Industrial hygiene consultancies based in Belo Horizonte, Brazil
- Industrial hygiene consultancies based in Campinas, Brazil
Company intelligence · public preview
Top 25 industrial hygiene consultancies 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 2,130 matching company records for industrial hygiene consultancies based in the United States, with 35,225 tracked contacts and 14,172 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: September 28, 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 consultancies 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 | 2,650 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 · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Exponentexponent.comHQ: Menlo Park, CA, United StatesReported employees: 1,001-5,000 | Menlo Park, CA, United States | 1,001-5,000 | Exact match | 1,560 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 · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Apex Companiesapexcos.comHQ: Rockville, MD, United StatesReported employees: 1,001-5,000 | Rockville, MD, United States | 1,001-5,000 | Exact match | 1,137 contacts → |
“Who is Apex?” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Barr Engineering CObarr.comHQ: Minneapolis, MN, United StatesReported employees: 1,001-5,000 | Minneapolis, MN, United States | 1,001-5,000 | Exact match | 1,088 contacts → |
“Barr provides engineering and environmental consulting services to clients across the Midwest, throughout the Americas, and around the world.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  IEAieasafety.comHQ: Brooklyn Park, MN, United StatesReported employees: Not recorded | Brooklyn Park, MN, United States | Not recorded | Exact match | 982 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 · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  ATC Group Services LLConeatlas.comHQ: Lafayette, LA, United StatesReported employees: 1,001-5,000 | Lafayette, LA, United States | 1,001-5,000 | Exact match | 865 contacts → |
“ATC Group Services LLC is now Atlas.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  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 · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Trihydro Corporationtrihydro.comHQ: Laramie, WY, United StatesReported employees: 501-1,000 | Laramie, WY, United States | 501-1,000 | Exact match | 577 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 · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Rincon Consultantsrinconconsultants.comHQ: Ventura, CA, United StatesReported employees: 501-1,000 | Ventura, CA, United States | 501-1,000 | Exact match | 479 contacts → |
“Rincon Consultants is a multi-disciplinary environmental sciences, planning, and engineering consulting firm that provides quality professional services to government and industry.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Ensafeensafe.comHQ: Memphis, TN, United StatesReported employees: 201-500 | Memphis, TN, United States | 201-500 | Exact match | 463 contacts → |
“Innovation is not happenstance at EnSafe Inc.” Recorded description excerpt · September 28, 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 | 433 contacts → |
“Founded 40 years ago, Roux is recognized for being a highly effective, client-focused environmental consulting and management firm.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  All4all4inc.comHQ: Kimberton, PA, United StatesReported employees: 201-500 | Kimberton, PA, United States | 201-500 | Exact match | 331 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 · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  GSI Environmental INCgsienv.comHQ: Houston, TX, United StatesReported employees: 201-500 | Houston, TX, United States | 201-500 | Exact match | 259 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 · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  August Mack Environmental, INCaugustmack.comHQ: Indianapolis, IN, United StatesReported employees: 51-200 | Indianapolis, IN, United States | 51-200 | Exact match | 210 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 15 |  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 · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | HQ: Hayward, CA, United StatesReported employees: 51-200 | Hayward, CA, United States | 51-200 | Exact match | 172 contacts → |
“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 description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Environmental Health & Engineeringeheinc.comHQ: Newton, MA, United StatesReported employees: 51-200 | Newton, MA, United States | 51-200 | Exact match | 170 contacts → |
“EH & E delivers integrated environmental, engineering, and health and safety solutions that help businesses and institutions safeguard their assets, improve operations and boost…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Gradientgradientcorp.comHQ: Boston, MA, United StatesReported employees: 51-200 | Boston, MA, United States | 51-200 | Exact match | 159 contacts → |
“Gradient is an environmental and risk science consulting firm renowned for our specialties in Toxicology, Epidemiology, Risk Assessment, Product Safety, Contaminant Fate and…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Keramida INCkeramida.comHQ: Indianapolis, IN, United StatesReported employees: 51-200 | Indianapolis, IN, United States | 51-200 | Exact match | 152 contacts → |
“Founded in 1988, KERAMIDA is a multidisciplinary Sustainability, EHS & Engineering consulting firm grounded in evidence-based research and development.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Cleanair Engineeringcleanair.comHQ: Palatine, IL, United StatesReported employees: 51-200 | Palatine, IL, United States | 51-200 | Exact match | 152 contacts → |
“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 description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Mostardi Plattmostardiplatt.comHQ: Elmhurst, IL, United StatesReported employees: 51-200 | Elmhurst, IL, United States | 51-200 | Exact match | 140 contacts → |
“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 description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Ensolum, LLCensolum.comHQ: Dallas, TX, United StatesReported employees: 51-200 | Dallas, TX, United States | 51-200 | Exact match | 136 contacts → |
“OUR MISSION is to combine sustainable environmental solutions with forward-thinking, cost-effective, innovative, and value-added technologies that balance our clients’ economic…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Safe T Professionals, LLCsafetpros.comHQ: Chandler, AZ, United StatesReported employees: 51-200 | Chandler, AZ, United States | 51-200 | Exact match | 130 contacts → |
“We are a successful environment health and safety staffing/staff augmentation and consulting firm with services available worldwide.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Ensero Solutionsensero.comHQ: Fort Collins, CO, United StatesReported employees: 51-200 | Fort Collins, CO, United States | 51-200 | Exact match | 129 contacts → |
“Ensero Solutions is an environmental consulting and remediation business with specific expertise in environmental assessments and permitting solutions, mine water management…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Secorp Industriessecorpindustries.com HQ: Lafayette, LA, United StatesReported employees: 501-1,000 | Lafayette, LA, United States | 501-1,000 | Exact match | 126 contacts → |
“Secorp Industries began in 1972 and is a safety company providing Respiratory Protection, Gas Monitoring and Detection, Rescue Services, Safety/Medical Consultants and Training to…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 2,130 company matches
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Industrial hygiene consultancies: dataset insights
September 28, 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
2,128 records in the displayed employee bands.
2 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 2,130 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: September 28, 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 consultancies by metro
Questions about this company list
What does Exact match mean for industrial hygiene consultancies?
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 consultancies did RevenueBase find based in the United States?
The saved snapshot records 2,130 matching company records, 35,225 tracked contacts and 14,172 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: September 28, 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 consultancies by geography
- Industrial hygiene consultancies based in Brisbane, Australia
- Industrial hygiene consultancies based in Melbourne, Australia
- Industrial hygiene consultancies based in Perth, Australia
- Industrial hygiene consultancies based in Sydney, Australia
- Industrial hygiene consultancies based in Belo Horizonte, Brazil
- Industrial hygiene consultancies based in Campinas, Brazil
- Industrial hygiene consultancies based in Curitiba, Brazil
- Industrial hygiene consultancies based in Porto Alegre, Brazil
- Industrial hygiene consultancies based in Rio De Janeiro, Brazil
- Industrial hygiene consultancies based in Sao Paulo, Brazil
- Industrial hygiene consultancies based in Calgary, Canada
- Industrial hygiene consultancies based in Paris, France
Cite this list
RevenueBase Data Team. Top 25 industrial hygiene consultancies based in the United States. Snapshot: September 28, 2026. https://revenuebase.ai/companies/industrial-hygiene-consultancies/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 consultancies based in Brisbane, Australia
- Industrial hygiene consultancies based in Melbourne, Australia
- Industrial hygiene consultancies based in Perth, Australia
- Industrial hygiene consultancies based in Sydney, Australia
- Industrial hygiene consultancies based in Belo Horizonte, Brazil
- Industrial hygiene consultancies based in Campinas, Brazil
Company intelligence · public preview
Top 25 industrial hygiene consultancies based in the United States
RevenueBase records 2,130 matching company records for industrial hygiene consultancies based in the United States, with 35,225 tracked contacts and 14,172 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: September 28, 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 consultancies 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 | 2,650 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 · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Exponentexponent.com HQ: Menlo Park, CA, United StatesReported employees: 1,001-5,000 | Menlo Park, CA, United States | 1,001-5,000 | Exact match | 1,560 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 · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Apex Companiesapexcos.com HQ: Rockville, MD, United StatesReported employees: 1,001-5,000 | Rockville, MD, United States | 1,001-5,000 | Exact match | 1,137 contacts → |
“Who is Apex?” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Barr Engineering CObarr.com HQ: Minneapolis, MN, United StatesReported employees: 1,001-5,000 | Minneapolis, MN, United States | 1,001-5,000 | Exact match | 1,088 contacts → |
“Barr provides engineering and environmental consulting services to clients across the Midwest, throughout the Americas, and around the world.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | IEAieasafety.com HQ: Brooklyn Park, MN, United StatesReported employees: Not recorded | Brooklyn Park, MN, United States | Not recorded | Exact match | 982 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 · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | ATC Group Services LLConeatlas.com HQ: Lafayette, LA, United StatesReported employees: 1,001-5,000 | Lafayette, LA, United States | 1,001-5,000 | Exact match | 865 contacts → |
“ATC Group Services LLC is now Atlas.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | 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 · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Trihydro Corporationtrihydro.com HQ: Laramie, WY, United StatesReported employees: 501-1,000 | Laramie, WY, United States | 501-1,000 | Exact match | 577 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 · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Rincon Consultantsrinconconsultants.com HQ: Ventura, CA, United StatesReported employees: 501-1,000 | Ventura, CA, United States | 501-1,000 | Exact match | 479 contacts → |
“Rincon Consultants is a multi-disciplinary environmental sciences, planning, and engineering consulting firm that provides quality professional services to government and industry.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Ensafeensafe.com HQ: Memphis, TN, United StatesReported employees: 201-500 | Memphis, TN, United States | 201-500 | Exact match | 463 contacts → |
“Innovation is not happenstance at EnSafe Inc.” Recorded description excerpt · September 28, 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 | 433 contacts → |
“Founded 40 years ago, Roux is recognized for being a highly effective, client-focused environmental consulting and management firm.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | All4all4inc.com HQ: Kimberton, PA, United StatesReported employees: 201-500 | Kimberton, PA, United States | 201-500 | Exact match | 331 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 · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | GSI Environmental INCgsienv.com HQ: Houston, TX, United StatesReported employees: 201-500 | Houston, TX, United States | 201-500 | Exact match | 259 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 · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | August Mack Environmental, INCaugustmack.com HQ: Indianapolis, IN, United StatesReported employees: 51-200 | Indianapolis, IN, United States | 51-200 | Exact match | 210 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 15 | 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 · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | HQ: Hayward, CA, United StatesReported employees: 51-200 | Hayward, CA, United States | 51-200 | Exact match | 172 contacts → |
“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 description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Environmental Health & Engineeringeheinc.com HQ: Newton, MA, United StatesReported employees: 51-200 | Newton, MA, United States | 51-200 | Exact match | 170 contacts → |
“EH & E delivers integrated environmental, engineering, and health and safety solutions that help businesses and institutions safeguard their assets, improve operations and boost…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Gradientgradientcorp.com HQ: Boston, MA, United StatesReported employees: 51-200 | Boston, MA, United States | 51-200 | Exact match | 159 contacts → |
“Gradient is an environmental and risk science consulting firm renowned for our specialties in Toxicology, Epidemiology, Risk Assessment, Product Safety, Contaminant Fate and…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Keramida INCkeramida.com HQ: Indianapolis, IN, United StatesReported employees: 51-200 | Indianapolis, IN, United States | 51-200 | Exact match | 152 contacts → |
“Founded in 1988, KERAMIDA is a multidisciplinary Sustainability, EHS & Engineering consulting firm grounded in evidence-based research and development.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Cleanair Engineeringcleanair.com HQ: Palatine, IL, United StatesReported employees: 51-200 | Palatine, IL, United States | 51-200 | Exact match | 152 contacts → |
“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 description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Mostardi Plattmostardiplatt.com HQ: Elmhurst, IL, United StatesReported employees: 51-200 | Elmhurst, IL, United States | 51-200 | Exact match | 140 contacts → |
“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 description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Ensolum, LLCensolum.com HQ: Dallas, TX, United StatesReported employees: 51-200 | Dallas, TX, United States | 51-200 | Exact match | 136 contacts → |
“OUR MISSION is to combine sustainable environmental solutions with forward-thinking, cost-effective, innovative, and value-added technologies that balance our clients’ economic…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Safe T Professionals, LLCsafetpros.com HQ: Chandler, AZ, United StatesReported employees: 51-200 | Chandler, AZ, United States | 51-200 | Exact match | 130 contacts → |
“We are a successful environment health and safety staffing/staff augmentation and consulting firm with services available worldwide.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Ensero Solutionsensero.com HQ: Fort Collins, CO, United StatesReported employees: 51-200 | Fort Collins, CO, United States | 51-200 | Exact match | 129 contacts → |
“Ensero Solutions is an environmental consulting and remediation business with specific expertise in environmental assessments and permitting solutions, mine water management…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Secorp Industriessecorpindustries.com HQ: Lafayette, LA, United StatesReported employees: 501-1,000 | Lafayette, LA, United States | 501-1,000 | Exact match | 126 contacts → |
“Secorp Industries began in 1972 and is a safety company providing Respiratory Protection, Gas Monitoring and Detection, Rescue Services, Safety/Medical Consultants and Training to…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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Industrial hygiene consultancies: dataset insights
September 28, 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
2,128 records in the displayed employee bands.
2 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 2,130 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: September 28, 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 consultancies by metro
Questions about this company list
What does Exact match mean for industrial hygiene consultancies?
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 consultancies did RevenueBase find based in the United States?
The saved snapshot records 2,130 matching company records, 35,225 tracked contacts and 14,172 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: September 28, 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 consultancies by geography
- Industrial hygiene consultancies based in Brisbane, Australia
- Industrial hygiene consultancies based in Melbourne, Australia
- Industrial hygiene consultancies based in Perth, Australia
- Industrial hygiene consultancies based in Sydney, Australia
- Industrial hygiene consultancies based in Belo Horizonte, Brazil
- Industrial hygiene consultancies based in Campinas, Brazil
- Industrial hygiene consultancies based in Curitiba, Brazil
- Industrial hygiene consultancies based in Porto Alegre, Brazil
- Industrial hygiene consultancies based in Rio De Janeiro, Brazil
- Industrial hygiene consultancies based in Sao Paulo, Brazil
- Industrial hygiene consultancies based in Calgary, Canada
- Industrial hygiene consultancies based in Paris, France
Cite this list
RevenueBase Data Team. Top 25 industrial hygiene consultancies based in the United States. Snapshot: September 28, 2026. https://revenuebase.ai/companies/industrial-hygiene-consultancies/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 consultancies based in Brisbane, Australia
- Industrial hygiene consultancies based in Melbourne, Australia
- Industrial hygiene consultancies based in Perth, Australia
- Industrial hygiene consultancies based in Sydney, Australia
- Industrial hygiene consultancies based in Belo Horizonte, Brazil
- Industrial hygiene consultancies based in Campinas, Brazil