Company lists · Data refreshed November 2026

Top 25 Air quality permitting specialists worldwide

RevenueBase identified 1,023 company matches for air quality permitting specialists worldwide as of November 2026 and tracks 8,709 professional contacts across them, including 3,015 with verified work emails. The United States is the largest market and Houston the largest hub.

This list covers company matches for air quality permitting specialists worldwide, 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 November 6, 2026. Country and city lists for air quality permitting specialists follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
1,023Companies
8,709Contacts tracked
3,015Verified emails
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The 25 largest air quality permitting specialists worldwide

Ranked by team size
Top 25 of 1,023 company matches for air quality permitting specialists worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchAchères, FranceHQ recorded Nov 6, 2026501-1,000240 contacts →

Exact match

“IGIENAIR : Spécialiste dans la maitrise et la surveillance de la Qualité de l'Air Intérieur (QAI)!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchElmhurst, IL, United StatesHQ recorded Nov 6, 202651-200165 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 · Nov 6, 2026 · View company records in RevenueBase
3Exact matchPalatine, TX, United StatesHQ recorded Nov 6, 202651-200158 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 · Nov 6, 2026 · View company records in RevenueBase
4Exact matchDenver, WA, United StatesHQ recorded Nov 6, 2026201-500142 contacts →

Exact match

“Environmental insight for complex real-world decisions Spheros Environmental helps clients make clear, defensible decisions in complex environments.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchCosta Mesa, CA, United StatesHQ recorded Nov 6, 202651-200109 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 · Nov 6, 2026 · View company records in RevenueBase
6Exact matchBaton Rouge, LA, United StatesHQ recorded Nov 6, 202651-200107 contacts →

Exact match

“CK Associates is an environmental consulting firm that is fully owned by its employees.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchSan Juan Capistrano, CA, United StatesHQ recorded Nov 6, 202651-200106 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchSherwood Park, AB, CanadaHQ recorded Nov 6, 202651-20088 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchConcepción, ChileHQ recorded Nov 6, 202651-20088 contacts →

Exact match

“En PROTERM S.A.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchHouston, FL, United StatesHQ recorded Nov 6, 202651-20079 contacts →

Exact match

“As a leader in the environmental compliance services industry, AARC does more than just meeting the needs of clients today.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchÑuñoa, ChileHQ recorded Nov 6, 202651-20078 contacts →

Exact match

“SERPRAM es una empresa líder de servicios medioambientales, especializada en el monitoreo de calidad de aire, medición de fuentes fijas y certificación de sistemas CEMS.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchBroken Arrow, LA, United StatesHQ recorded Nov 6, 202651-20077 contacts →

Exact match

“Air Hygiene is a national leader in stack testing, air emissions measurement, RATAs, and regulatory compliance services for industrial facilities across the United States.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchFort Collins, WA, United StatesHQ recorded Nov 6, 202651-20073 contacts →

Exact match

“We deliver quality solutions with integrity and expertise, every time.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchHouston, LA, United StatesHQ recorded Nov 6, 2026201-50062 contacts →

Exact match

“Sage ATC Environmental Consulting is now Atlas.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchBogotá, ColombiaHQ recorded Nov 6, 202651-20057 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchCharleston, KY, United StatesHQ recorded Nov 6, 202651-20055 contacts →

Exact match

“GEL Engineering and GEL Engineering of NC provide environmental, engineering, surveying, and emissions testing services to our valued clients throughout the southeast and beyond.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchBristol, United KingdomHQ recorded Nov 6, 202651-20051 contacts →

Exact match

“Established in 1993, Air Quality Consultants has a strong and proven track record in providing independent air quality services to private and public sector clients, both within…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchHonolulu, HI, United StatesHQ recorded Nov 6, 202651-20048 contacts →

Exact match

“We Are a Full-Service Environmental Consultancy.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchNorth Vancouver, BC, CanadaHQ recorded Nov 6, 202611-5047 contacts →

Exact match

“We are your trusted environmental advisor since 1984.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchMaceió, BrazilHQ recorded Nov 6, 202611-5047 contacts →

Exact match

“A Ambimet é uma empresa alagoana especializada em monitoramentos ambientais da qualidade do Ar, e tem como base na prestação dos seus serviços a confiabilidade, qualidade nos…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchOjai, CA, United StatesHQ recorded Nov 6, 202651-20044 contacts →

Exact match

“Pax Environmental, Inc.(Pax) is a veteran-owned environmental consulting firm based in Ojai, California.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchPasadena, CA, United StatesHQ recorded Nov 6, 202611-5044 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchFort Lauderdale, NY, United StatesHQ recorded Nov 6, 202611-5042 contacts →

Exact match

“AirQuest Environmental, Inc.("AirQuest") solves environmental, health, and safety problems, improving the air quality, health of your workforce, and the value of your buildings.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchHelena, MT, United StatesHQ recorded Nov 6, 202611-5041 contacts →

Exact match

“Air Quality and Environmental Consulting Bison Engineering, Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchSantiago, ChileHQ recorded Nov 6, 202611-5040 contacts →

Exact match

“Experticia ingenieros es una empresa de Ingeniería y servicios enfocada a la gestión de la calidad del aire.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 1,023 air quality permitting specialists worldwide

See the full list, filter by size, metro and specialty, and access 3,015 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Air quality permitting specialists worldwide at a glance

As of Nov 6, 2026
34.6%Verified-email coverage
8.5Average contacts per company
1-10Median size (employees)
1.4%Largest-city concentration · Houston
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
645
11-50
311
51-200
47
201-500
6
501-1,000
5
1,001-5,000
1

Email recency is reported on each country list linked below.

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.
Coverage
Every country. Country and city lists for air quality permitting specialists are linked below.
What qualifies
Company records worldwide whose business descriptions match “air quality permitting specialists” 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. 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 3,015 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 November 6, 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.

Air quality permitting specialists by location

6 lists · largest first

Every Air quality permitting specialists list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 “air quality permitting specialists”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many air quality permitting specialists are there worldwide?

RevenueBase identified 1,023 company matches for air quality permitting specialists worldwide as of November 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?

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

Which country has the most air quality permitting specialists?

The United States leads with 363 companies, followed by Brazil (106) and Canada (41). Every air quality permitting specialists list by country and city is linked on this page.

Which city has the most air quality permitting specialists?

Houston leads with 14 company records, followed by Calgary (12) and Sao Paulo (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 3,015 professional contacts with verified work emails tracked across these 1,023 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 November 6, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.