Company lists · Data refreshed September 2026
Top 25 Environmental auditing firms based in the United States
RevenueBase identified 774 company matches for environmental auditing firms associated with the United States as of September 2026 and tracks 11,463 professional contacts across them, including 5,732 with verified work emails. Houston is the largest hub.
This list covers company matches for environmental auditing 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 September 19, 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 environmental auditing firms based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 956 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 · Sep 19, 2026 · View company records in RevenueBase | |||||
| 2 | 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 19, 2026 · View company records in RevenueBase | |||||
| 3 | 447 contacts → | ||||
Exact match “We are Groundwater & Environmental Services, Inc, better known as GES.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 4 | 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 19, 2026 · View company records in RevenueBase | |||||
| 5 | 233 contacts → | ||||
Exact match “Appl Inc is an environmental services company based out of 908 N Temperance Ave, Clovis, CA, United States.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 6 | 210 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 7 | 166 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 8 | 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 19, 2026 · View company records in RevenueBase | |||||
| 9 | 147 contacts → | ||||
Exact match “Quest Resource Management Group, a subsidiary of Quest Resource Holding Corporation (Nasdaq: QRHC), is a full-service environmental consulting and management company headquartered…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 10 | 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 19, 2026 · View company records in RevenueBase | |||||
| 11 | 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 19, 2026 · View company records in RevenueBase | |||||
| 12 | 118 contacts → | ||||
Exact match “PPM Consultants is an environmental and engineering consulting firm providing services to industrial, commercial, and governmental clients.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 13 | 116 contacts → | ||||
Exact match “Edge Engineering & Science, LLC (EDGE) is a privately owned professional services firm headquartered in Houston, Texas.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 14 | 106 contacts → | ||||
Exact match “Farallon Consulting helps clients navigate complex environmental challenges with practical, technically-sound solutions grounded in accuracy, integrity, and collaboration.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 15 | 104 contacts → | ||||
Exact match “Established in 1983, TechLaw provides environmental and management consulting services to the public sector nationwide.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 16 | 103 contacts → | ||||
Exact match “Hart & Hickman PC provides environmental consulting services to commercial, industrial, and governmental clients throughout the Southeast US.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 17 | 98 contacts → | ||||
Exact match “Public agencies and businesses have been relying on Chambers Group to keep them in compliance with applicable federal, state, and/or local environmental laws, regulations, and…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 18 | 97 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 19 | 96 contacts → | ||||
Exact match “We are environmental consultants and redevelopment experts who are proud to help build sustainable communities.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 20 | 94 contacts → | ||||
Exact match “Aspen Environmental Group is an expert interdisciplinary environmental impact analysis firm, specializing in the management of environmental assessment efforts under CEQA, NEPA…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 21 | 87 contacts → | ||||
Exact match “Water and Air Research, Inc.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 22 | 80 contacts → | ||||
Exact match “Since 1994, EAGLE has built an excellent reputation by providing third party auditing services that are objective and value-added.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 23 | 70 contacts → | ||||
Exact match “We deliver quality solutions with integrity and expertise, every time.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 24 | 70 contacts → | ||||
Exact match “Environmental Services, Inc.(ESI) is a leading full service environmental consulting firm with national and international experience.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 25 | 69 contacts → | ||||
Exact match “We do environmental work.” Recorded in the RevenueBase company graph · Sep 19, 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 “environmental auditing 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 774 environmental auditing firms based in the United States
See the full list, filter by size, metro and specialty, and access 5,732 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Environmental auditing firms based in the United States at a glance
As of Sep 19, 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 774 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 “environmental auditing 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 5,732 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 19, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “environmental auditing firms”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many environmental auditing firms are there based in the United States?
RevenueBase identified 774 company matches for environmental auditing firms 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?
Alliance Technical Group tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most environmental auditing firms?
Houston leads with 28 company records, followed by New York (12) and Tampa (11).
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 5,732 professional contacts with verified work emails tracked across these 774 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 19, 2026.
Ready to reach these companies? Verified emails and direct dials for all 774 environmental auditing firms based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Environmental auditing firms by geography
- Environmental auditing firms based in Belo Horizonte, Brazil
- Environmental auditing firms based in Curitiba, Brazil
- Environmental auditing firms based in Rio De Janeiro, Brazil
- Environmental auditing firms based in Sao Paulo, Brazil
- Environmental auditing firms based in Australia
- Environmental auditing firms based in Brazil
- Environmental auditing firms based in Canada
- Environmental auditing firms based in Chile
- Environmental auditing firms based in Colombia
- Environmental auditing firms based in France
- Environmental auditing firms based in Germany
- Environmental auditing firms based in India
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
- Environmental auditing firms based in Belo Horizonte, Brazil
- Environmental auditing firms based in Curitiba, Brazil
- Environmental auditing firms based in Rio De Janeiro, Brazil
- Environmental auditing firms based in Sao Paulo, Brazil
- Environmental auditing firms based in Australia
- Environmental auditing firms based in Brazil
Company intelligence · public preview
Top 25 environmental auditing 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 774 matching company records for environmental auditing firms based in the United States, with 11,463 tracked contacts and 5,732 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 19, 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 environmental auditing 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 |  Alliance Technical Groupalliancetg.comHQ: Decatur, AL, United StatesReported employees: 1,001-5,000 | Decatur, AL, United States | 1,001-5,000 | Exact match | 956 contacts → |
“Alliance is a new kind of environmental services company-powered by innovation, focused on service, and committed to client success.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  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 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Groundwater & Environmental Services, INCgesonline.comHQ: Wall Township, NJ, United StatesReported employees: 201-500 | Wall Township, NJ, United States | 201-500 | Exact match | 447 contacts → |
“We are Groundwater & Environmental Services, Inc, better known as GES.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  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 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Metiri Groupapplinc.comHQ: Clovis, CA, United StatesReported employees: Not recorded | Clovis, CA, United States | Not recorded | Exact match | 233 contacts → |
“Appl Inc is an environmental services company based out of 908 N Temperance Ave, Clovis, CA, United States.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  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. | |||||
| 7 |  Ecorp Consulting, INCecorpconsulting.comHQ: Rocklin, CA, United StatesReported employees: 51-200 | Rocklin, CA, United States | 51-200 | Exact match | 166 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 8 |  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 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | HQ: The Colony, TX, United StatesReported employees: 51-200 | The Colony, TX, United States | 51-200 | Exact match | 147 contacts → |
“Quest Resource Management Group, a subsidiary of Quest Resource Holding Corporation (Nasdaq: QRHC), is a full-service environmental consulting and management company headquartered…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  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 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  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 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  PPM Consultants, INCppmco.comHQ: Birmingham Office, AL, United StatesReported employees: 51-200 | Birmingham Office, AL, United States | 51-200 | Exact match | 118 contacts → |
“PPM Consultants is an environmental and engineering consulting firm providing services to industrial, commercial, and governmental clients.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Edge Engineering And Science, LLCedge-es.comHQ: Houston, TX, United StatesReported employees: 51-200 | Houston, TX, United States | 51-200 | Exact match | 116 contacts → |
“Edge Engineering & Science, LLC (EDGE) is a privately owned professional services firm headquartered in Houston, Texas.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Farallon Consultingfarallonconsulting.com HQ: Bellevue, WA, United StatesReported employees: 51-200 | Bellevue, WA, United States | 51-200 | Exact match | 106 contacts → |
“Farallon Consulting helps clients navigate complex environmental challenges with practical, technically-sound solutions grounded in accuracy, integrity, and collaboration.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Techlawtechlawinc.comHQ: Chantilly, VA, United StatesReported employees: 201-500 | Chantilly, VA, United States | 201-500 | Exact match | 104 contacts → |
“Established in 1983, TechLaw provides environmental and management consulting services to the public sector nationwide.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Hart & Hickman, PCharthickman.comHQ: Charlotte, NC, United StatesReported employees: 51-200 | Charlotte, NC, United States | 51-200 | Exact match | 103 contacts → |
“Hart & Hickman PC provides environmental consulting services to commercial, industrial, and governmental clients throughout the Southeast US.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Chambers Group, INCchambersgroupinc.comHQ: Costa Mesa, CA, United StatesReported employees: 51-200 | Costa Mesa, CA, United States | 51-200 | Exact match | 98 contacts → |
“Public agencies and businesses have been relying on Chambers Group to keep them in compliance with applicable federal, state, and/or local environmental laws, regulations, and…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  A-Tech Consulting, INCatechinc.netHQ: Orange, CA, United StatesReported employees: 51-200 | Orange, CA, United States | 51-200 | Exact match | 97 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 19 |  AKT Peerlessaktpeerless.comHQ: Saginaw, MI, United StatesReported employees: 51-200 | Saginaw, MI, United States | 51-200 | Exact match | 96 contacts → |
“We are environmental consultants and redevelopment experts who are proud to help build sustainable communities.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Aspen Environmental Groupaspeneg.com HQ: Agoura Hills, CA, United StatesReported employees: 51-200 | Agoura Hills, CA, United States | 51-200 | Exact match | 94 contacts → |
“Aspen Environmental Group is an expert interdisciplinary environmental impact analysis firm, specializing in the management of environmental assessment efforts under CEQA, NEPA…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Water & AIR Research, INCwaterandair.com HQ: Gainesville, FL, United StatesReported employees: 11-50 | Gainesville, FL, United States | 11-50 | Exact match | 87 contacts → |
“Water and Air Research, Inc.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Eagle Certification Groupeaglecertificationgroup.comHQ: Dayton, OH, United StatesReported employees: 11-50 | Dayton, OH, United States | 11-50 | Exact match | 80 contacts → |
“Since 1994, EAGLE has built an excellent reputation by providing third party auditing services that are objective and value-added.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Cgrs INCcgrs.comHQ: Fort Collins, CO, United StatesReported employees: 51-200 | Fort Collins, CO, United States | 51-200 | Exact match | 70 contacts → |
“We deliver quality solutions with integrity and expertise, every time.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Environmental Services, Inc., A Terracon Companyenvironmentalservicesinc.comHQ: Jacksonville, FL, United StatesReported employees: 51-200 | Jacksonville, FL, United States | 51-200 | Exact match | 70 contacts → |
“Environmental Services, Inc.(ESI) is a leading full service environmental consulting firm with national and international experience.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | HQ: Baltimore, MD, United StatesReported employees: 51-200 | Baltimore, MD, United States | 51-200 | Exact match | 69 contacts → |
“We do environmental work.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 774 company matches
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Environmental auditing firms: dataset insights
September 19, 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
773 records in the displayed employee bands.
1 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 774 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 19, 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 ↗
Questions about this company list
What does Exact match mean for environmental auditing 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 environmental auditing firms did RevenueBase find based in the United States?
The saved snapshot records 774 matching company records, 11,463 tracked contacts and 5,732 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 19, 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
Environmental auditing firms by geography
- Environmental auditing firms based in Belo Horizonte, Brazil
- Environmental auditing firms based in Curitiba, Brazil
- Environmental auditing firms based in Rio De Janeiro, Brazil
- Environmental auditing firms based in Sao Paulo, Brazil
- Environmental auditing firms based in Australia
- Environmental auditing firms based in Brazil
- Environmental auditing firms based in Canada
- Environmental auditing firms based in Chile
- Environmental auditing firms based in Colombia
- Environmental auditing firms based in France
- Environmental auditing firms based in Germany
- Environmental auditing firms based in India
Cite this list
RevenueBase Data Team. Top 25 environmental auditing firms based in the United States. Snapshot: September 19, 2026. https://revenuebase.ai/companies/environmental-auditing-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
- Environmental auditing firms based in Belo Horizonte, Brazil
- Environmental auditing firms based in Curitiba, Brazil
- Environmental auditing firms based in Rio De Janeiro, Brazil
- Environmental auditing firms based in Sao Paulo, Brazil
- Environmental auditing firms based in Australia
- Environmental auditing firms based in Brazil
Company intelligence · public preview
Top 25 environmental auditing firms based in the United States
RevenueBase records 774 matching company records for environmental auditing firms based in the United States, with 11,463 tracked contacts and 5,732 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 19, 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 environmental auditing 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 | Alliance Technical Groupalliancetg.com HQ: Decatur, AL, United StatesReported employees: 1,001-5,000 | Decatur, AL, United States | 1,001-5,000 | Exact match | 956 contacts → |
“Alliance is a new kind of environmental services company-powered by innovation, focused on service, and committed to client success.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | 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 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Groundwater & Environmental Services, INCgesonline.com HQ: Wall Township, NJ, United StatesReported employees: 201-500 | Wall Township, NJ, United States | 201-500 | Exact match | 447 contacts → |
“We are Groundwater & Environmental Services, Inc, better known as GES.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | 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 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Metiri Groupapplinc.com HQ: Clovis, CA, United StatesReported employees: Not recorded | Clovis, CA, United States | Not recorded | Exact match | 233 contacts → |
“Appl Inc is an environmental services company based out of 908 N Temperance Ave, Clovis, CA, United States.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | 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. | |||||
| 7 | Ecorp Consulting, INCecorpconsulting.com HQ: Rocklin, CA, United StatesReported employees: 51-200 | Rocklin, CA, United States | 51-200 | Exact match | 166 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 8 | 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 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | HQ: The Colony, TX, United StatesReported employees: 51-200 | The Colony, TX, United States | 51-200 | Exact match | 147 contacts → |
“Quest Resource Management Group, a subsidiary of Quest Resource Holding Corporation (Nasdaq: QRHC), is a full-service environmental consulting and management company headquartered…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | 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 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | 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 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | PPM Consultants, INCppmco.com HQ: Birmingham Office, AL, United StatesReported employees: 51-200 | Birmingham Office, AL, United States | 51-200 | Exact match | 118 contacts → |
“PPM Consultants is an environmental and engineering consulting firm providing services to industrial, commercial, and governmental clients.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Edge Engineering And Science, LLCedge-es.com HQ: Houston, TX, United StatesReported employees: 51-200 | Houston, TX, United States | 51-200 | Exact match | 116 contacts → |
“Edge Engineering & Science, LLC (EDGE) is a privately owned professional services firm headquartered in Houston, Texas.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Farallon Consultingfarallonconsulting.com HQ: Bellevue, WA, United StatesReported employees: 51-200 | Bellevue, WA, United States | 51-200 | Exact match | 106 contacts → |
“Farallon Consulting helps clients navigate complex environmental challenges with practical, technically-sound solutions grounded in accuracy, integrity, and collaboration.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Techlawtechlawinc.com HQ: Chantilly, VA, United StatesReported employees: 201-500 | Chantilly, VA, United States | 201-500 | Exact match | 104 contacts → |
“Established in 1983, TechLaw provides environmental and management consulting services to the public sector nationwide.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Hart & Hickman, PCharthickman.com HQ: Charlotte, NC, United StatesReported employees: 51-200 | Charlotte, NC, United States | 51-200 | Exact match | 103 contacts → |
“Hart & Hickman PC provides environmental consulting services to commercial, industrial, and governmental clients throughout the Southeast US.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Chambers Group, INCchambersgroupinc.com HQ: Costa Mesa, CA, United StatesReported employees: 51-200 | Costa Mesa, CA, United States | 51-200 | Exact match | 98 contacts → |
“Public agencies and businesses have been relying on Chambers Group to keep them in compliance with applicable federal, state, and/or local environmental laws, regulations, and…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | A-Tech Consulting, INCatechinc.net HQ: Orange, CA, United StatesReported employees: 51-200 | Orange, CA, United States | 51-200 | Exact match | 97 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 19 | AKT Peerlessaktpeerless.com HQ: Saginaw, MI, United StatesReported employees: 51-200 | Saginaw, MI, United States | 51-200 | Exact match | 96 contacts → |
“We are environmental consultants and redevelopment experts who are proud to help build sustainable communities.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Aspen Environmental Groupaspeneg.com HQ: Agoura Hills, CA, United StatesReported employees: 51-200 | Agoura Hills, CA, United States | 51-200 | Exact match | 94 contacts → |
“Aspen Environmental Group is an expert interdisciplinary environmental impact analysis firm, specializing in the management of environmental assessment efforts under CEQA, NEPA…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Water & AIR Research, INCwaterandair.com HQ: Gainesville, FL, United StatesReported employees: 11-50 | Gainesville, FL, United States | 11-50 | Exact match | 87 contacts → |
“Water and Air Research, Inc.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Eagle Certification Groupeaglecertificationgroup.com HQ: Dayton, OH, United StatesReported employees: 11-50 | Dayton, OH, United States | 11-50 | Exact match | 80 contacts → |
“Since 1994, EAGLE has built an excellent reputation by providing third party auditing services that are objective and value-added.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Cgrs INCcgrs.com HQ: Fort Collins, CO, United StatesReported employees: 51-200 | Fort Collins, CO, United States | 51-200 | Exact match | 70 contacts → |
“We deliver quality solutions with integrity and expertise, every time.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Environmental Services, Inc., A Terracon Companyenvironmentalservicesinc.com HQ: Jacksonville, FL, United StatesReported employees: 51-200 | Jacksonville, FL, United States | 51-200 | Exact match | 70 contacts → |
“Environmental Services, Inc.(ESI) is a leading full service environmental consulting firm with national and international experience.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | HQ: Baltimore, MD, United StatesReported employees: 51-200 | Baltimore, MD, United States | 51-200 | Exact match | 69 contacts → |
“We do environmental work.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 774 company matches
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Environmental auditing firms: dataset insights
September 19, 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
773 records in the displayed employee bands.
1 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 774 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 19, 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 ↗
Questions about this company list
What does Exact match mean for environmental auditing 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 environmental auditing firms did RevenueBase find based in the United States?
The saved snapshot records 774 matching company records, 11,463 tracked contacts and 5,732 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 19, 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
Environmental auditing firms by geography
- Environmental auditing firms based in Belo Horizonte, Brazil
- Environmental auditing firms based in Curitiba, Brazil
- Environmental auditing firms based in Rio De Janeiro, Brazil
- Environmental auditing firms based in Sao Paulo, Brazil
- Environmental auditing firms based in Australia
- Environmental auditing firms based in Brazil
- Environmental auditing firms based in Canada
- Environmental auditing firms based in Chile
- Environmental auditing firms based in Colombia
- Environmental auditing firms based in France
- Environmental auditing firms based in Germany
- Environmental auditing firms based in India
Cite this list
RevenueBase Data Team. Top 25 environmental auditing firms based in the United States. Snapshot: September 19, 2026. https://revenuebase.ai/companies/environmental-auditing-firms/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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- Environmental auditing firms based in Belo Horizonte, Brazil
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- Environmental auditing firms based in Brazil