Company lists · Data refreshed September 2026

Top 25 Industrial emissions monitoring companies based in the United States

Name: Industrial emissions monitoring companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 1,022 companies tracked

RevenueBase identified 1,022 industrial emissions monitoring companies headquartered in the United States as of September 2026 and tracks 23,368 professional contacts across them, including 8,063 with verified work emails. Houston is the largest hub.

This list covers industrial emissions monitoring companies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 17, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 17, 2026 86% judged on-target in blind review

1,022Companies

23,368Contacts tracked

8,063Verified emails

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The 25 largest industrial emissions monitoring companies based in the United States

Ranked by team size

Top 25 of 1,022 industrial emissions monitoring companies based in the United States, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to industrial emissions monitoring companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Alliance Technical Group	Indirect evidence	Decatur, AL, United StatesHQ checked Sep 17, 2026	1,001-5,000	956 contacts →
	Indirect evidence “Alliance is a new kind of environmental services company-powered by innovation, focused on service, and committed to client success.” Source: RevenueBase Database · checked Sep 17, 2026
2	ROUX	Indirect evidence	Islandia, NY, United StatesHQ checked Sep 17, 2026	201-500	433 contacts →
	Indirect evidence “Founded 40 years ago, Roux is recognized for being a highly effective, client-focused environmental consulting and management firm.” Source: RevenueBase Database · checked Sep 17, 2026
3	Mesa Laboratories, INC	Indirect evidence	Lakewood, CO, United StatesHQ checked Sep 17, 2026	501-1,000	323 contacts →
	Indirect evidence “Mesa Labs helps you monitor and maintain higher standards in any environment – from the air we breathe to the critical moments of life-saving care.” Source: RevenueBase Database · checked Sep 17, 2026
4	Cimarron	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	501-1,000	306 contacts →
	Partial evidence “With decades of operating history and innovation across our trusted brands, Cimarron provides technology-driven emissions management solutions for the global energy system.” Source: RevenueBase Database · checked Sep 17, 2026
5	Picarro	Partial evidence	Santa Clara, CA, United StatesHQ checked Sep 17, 2026	201-500	297 contacts →
	Partial evidence “Reducing emissions, detecting leaks, mitigating risk, optimizing operations, ensuring compliance and advancing research are some of the challenges facing our clients.” Source: RevenueBase Database · checked Sep 17, 2026
6	Miratech	Partial evidence	Tulsa, OK, United StatesHQ checked Sep 17, 2026	501-1,000	252 contacts →
	Partial evidence “MIRATECH is the global leader in emissions and acoustic control solutions for stationary natural gas and diesel engines, serving the power generation, oil and gas, data center…” Source: RevenueBase Database · checked Sep 17, 2026
7	Environmental Works, INC	Partial evidence	Springfield, MO, United StatesHQ checked Sep 17, 2026	201-500	238 contacts →
	Partial evidence “Environmental Works, Inc.(EWI) offers truly comprehensive environmental solutions for a variety of industries, businesses, and municipalities.” Source: RevenueBase Database · checked Sep 17, 2026
8	Metiri Group	Indirect evidence	Clovis, CA, United StatesHQ checked Sep 17, 2026	n/a	233 contacts →
	Indirect evidence “Appl Inc is an environmental services company based out of 908 N Temperance Ave, Clovis, CA, United States.” Source: RevenueBase Database · checked Sep 17, 2026
9	OTT Hydromet	Indirect evidence	Sterling, VA, United StatesHQ checked Sep 17, 2026	201-500	231 contacts →
	Indirect evidence “OTT HydroMet works to deliver customer outcomes by providing decision makers with vital insights they trust.” Source: RevenueBase Database · checked Sep 17, 2026
10	Patriot Environmental Services	Indirect evidence	Signal Hill, CA, United StatesHQ checked Sep 17, 2026	201-500	223 contacts →
	Indirect evidence “Patriot Environmental Services, a Crystal Clean company, is a leading environmental service provider with clients throughout the Southwestern United States.” Source: RevenueBase Database · checked Sep 17, 2026
11	Rees Scientific	Strong evidence	Trenton, NJ, United StatesHQ checked Sep 17, 2026	51-200	210 contacts →
	Strong evidence “Rees Scientific provides continuous automated monitoring to a limitless number of applications in a wide range of industries.” Source: RevenueBase Database · checked Sep 17, 2026
12	IAC	Partial evidence	Overland Park, KS, United StatesHQ checked Sep 17, 2026	51-200	166 contacts →
	Partial evidence “IAC is a fully integrated industrial EPC (Engineering, Procurement, Construction) Contractor and OEM of industrial Baghouses, Dust Collection, Ventilation, Air Quality Control…” Source: RevenueBase Database · checked Sep 17, 2026
13	TASC	Indirect evidence	Seabrook, TX, United StatesHQ checked Sep 17, 2026	201-500	161 contacts →
	Indirect evidence “Automation and Technology Group: Specializing in Analyzer System Integration.” Source: RevenueBase Database · checked Sep 17, 2026
14	Cleanair Engineering	Indirect evidence	Palatine, IL, United StatesHQ checked Sep 17, 2026	51-200	152 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 17, 2026
15	Babcock & Wilcox Megtec B&w Megtec	Partial evidence	De Pere, WI, United StatesHQ checked Sep 17, 2026	501-1,000	140 contacts →
	Partial evidence “Dürr Megtec is a leading global supplier of environmental control technologies and engineered products tailored to meet customers' industrial process requirements.” Source: RevenueBase Database · checked Sep 17, 2026
16	Mostardi Platt	Indirect evidence	Elmhurst, IL, United StatesHQ checked Sep 17, 2026	51-200	140 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 17, 2026
17	Ensolum, LLC	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 17, 2026	51-200	136 contacts →
	Indirect evidence “OUR MISSION is to combine sustainable environmental solutions with forward-thinking, cost-effective, innovative, and value-added technologies that balance our clients’ economic…” Source: RevenueBase Database · checked Sep 17, 2026
18	Li-Cor	Partial evidence	Lincoln, NE, United StatesHQ checked Sep 17, 2026	201-500	136 contacts →
	Partial evidence “LI-COR is a leader in environmental measurement and monitoring solutions.” Source: RevenueBase Database · checked Sep 17, 2026
19	Airtek Construction	Indirect evidence	Troy, United StatesHQ checked Sep 17, 2026	51-200	122 contacts →
	Indirect evidence “AirTek is a leading supplier of air pollution control (APC) equipment and services for a wide range of customers in the power generation, pulp and paper, petrochemical, rock…” Source: RevenueBase Database · checked Sep 17, 2026
20	ESC Spectrum Corporation	Partial evidence	Austin, TX, United StatesHQ checked Sep 17, 2026	51-200	114 contacts →
	Partial evidence “Based in Austin, Texas, ESC Spectrum, an Alliance Technical Group company, is a leading provider of products and services for customers in a variety of industries, from Electric…” Source: RevenueBase Database · checked Sep 17, 2026
21	Fuel Tech, INC	Partial evidence	Warrenville, IL, United StatesHQ checked Sep 17, 2026	51-200	113 contacts →
	Partial evidence “Fuel Tech provides multi-pollutant emissions control and water treatment technologies using a cost-effective and sustainable approach.” Source: RevenueBase Database · checked Sep 17, 2026
22	RKI Instruments, INC	Indirect evidence	Union City, CA, United StatesHQ checked Sep 17, 2026	51-200	104 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
23	Hart & Hickman, PC	Partial evidence	Charlotte, NC, United StatesHQ checked Sep 17, 2026	51-200	103 contacts →
	Partial evidence “Hart & Hickman PC provides environmental consulting services to commercial, industrial, and governmental clients throughout the Southeast US.” Source: RevenueBase Database · checked Sep 17, 2026
24	CK Associates Environmental Consultants	Indirect evidence	Baton Rouge, LA, United StatesHQ checked Sep 17, 2026	51-200	101 contacts →
	Indirect evidence “CK Associates is an environmental consulting firm that is fully owned by its employees.” Source: RevenueBase Database · checked Sep 17, 2026
25	Chambers Group, INC	Indirect evidence	Costa Mesa, CA, United StatesHQ checked Sep 17, 2026	51-200	98 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 17, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: industrial emissions monitoring companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names industrial emissions monitoring companies.
Partial evidence: Its own public description names part of industrial emissions monitoring companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name industrial emissions monitoring companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 1,022 industrial emissions monitoring companies based in the United States

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Industrial emissions monitoring companies based in the United States at a glance

As of Sep 17, 2026

34.5%Verified-email coverage

22.9Average contacts per company

11-50Median size (employees)

3.5%Largest-city concentration · Houston

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

469

11-50

401

51-200

120

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 1,022 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among industrial emissions monitoring companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “industrial emissions monitoring companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names industrial emissions monitoring companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among industrial emissions monitoring companies, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 8,063 across the full list. 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 17, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Industrial emissions monitoring companies by metro

Industrial emissions monitoring companies in Houston36

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names industrial emissions monitoring companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many industrial emissions monitoring companies are there based in the United States?

RevenueBase identified 1,022 industrial emissions monitoring companies headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Alliance Technical Group, headquartered in Decatur, tops this list with the largest team on record.

Which city has the most industrial emissions monitoring companies?

Houston leads with 36 headquartered companies, followed by Dallas (17) and Austin (14).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 8,063 verified decision-maker contacts tracked across these 1,022 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 17, 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 Smart Search, 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.