Company lists · Data refreshed September 2026

Top 25 Pollution prevention companies based in the United States

Name: Pollution prevention 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 20, 2026 795 companies tracked

RevenueBase identified 795 pollution prevention companies headquartered in the United States as of September 2026 and tracks 31,540 professional contacts across them, including 11,013 with verified work emails. Houston is the largest hub.

This list covers pollution prevention 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 20, 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 20, 2026 86% judged on-target in blind review

795Companies

31,540Contacts tracked

11,013Verified emails

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The 25 largest pollution prevention companies based in the United States

Ranked by team size

Top 25 of 795 pollution prevention companies based in the United States, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to pollution prevention 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	Clean Harbors	Indirect evidence	Norwell, MA, United StatesHQ checked Sep 20, 2026	10001+	8,924 contacts →
	Indirect evidence “Clean Harbors is North America’s leading provider of environmental and industrial services.” Source: RevenueBase Database · checked Sep 20, 2026
2	Montrose Environmental Group	Indirect evidence	Little Rock, AR, United StatesHQ checked Sep 20, 2026	1,001-5,000	1,529 contacts →
	Indirect evidence “Onterris (formerly Montrose Environmental Group) was one of the first to see environmental responsibility as not just an imperative but as a strategic asset.” Source: RevenueBase Database · checked Sep 20, 2026
3	Triumvirate Environmental	Indirect evidence	Somerville, MA, United StatesHQ checked Sep 20, 2026	1,001-5,000	1,068 contacts →
	Indirect evidence “Triumvirate Environmental provides sustainable environmental solutions to leading companies in the Life Sciences, Healthcare, Education, and Advanced Manufacturing markets.” Source: RevenueBase Database · checked Sep 20, 2026
4	Alliance Technical Group	Indirect evidence	Decatur, AL, United StatesHQ checked Sep 20, 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 20, 2026
5	AAF International American AIR Filter	Indirect evidence	Louisville, KY, United StatesHQ checked Sep 20, 2026	1,001-5,000	806 contacts →
	Indirect evidence “AAF International clean air products and systems offer the most comprehensive clean air solutions available in the world.” Source: RevenueBase Database · checked Sep 20, 2026
6	Chemstation	Indirect evidence	Dayton, OH, United StatesHQ checked Sep 20, 2026	201-500	513 contacts →
	Indirect evidence “The ChemStation System offers custom-formulated, environmentally friendly industrial cleaning and process chemicals, delivered to refillable containers.” Source: RevenueBase Database · checked Sep 20, 2026
7	VLS Environmental Solutions, LLC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	1,001-5,000	481 contacts →
	Indirect evidence “At VLS, we address your company’s most significant hurdles with waste management and compliance through sustainable solutions.” Source: RevenueBase Database · checked Sep 20, 2026
8	ROUX	Indirect evidence	Islandia, NY, United StatesHQ checked Sep 20, 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 20, 2026
9	GSI Environmental INC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	201-500	259 contacts →
	Indirect evidence “GSI Environmental, Inc.(GSI), is an environmental engineering and science consulting firm committed to measuring, analyzing, and solving complex environmental problems around the…” Source: RevenueBase Database · checked Sep 20, 2026
10	Ancon Services	Indirect evidence	Los Alamitos, CA, United StatesHQ checked Sep 20, 2026	501-1,000	248 contacts →
	Indirect evidence “Founded in 1968, Ancon Services has expanded our services to cover virtually all of our clients industrial and environmental needs.” Source: RevenueBase Database · checked Sep 20, 2026
11	Environmental Works, INC	Indirect evidence	Springfield, MO, United StatesHQ checked Sep 20, 2026	201-500	238 contacts →
	Indirect evidence “Environmental Works, Inc.(EWI) offers truly comprehensive environmental solutions for a variety of industries, businesses, and municipalities.” Source: RevenueBase Database · checked Sep 20, 2026
12	ARQ	Indirect evidence	Greenwood Village, CO, United StatesHQ checked Sep 20, 2026	201-500	234 contacts →
	Indirect evidence “Arq is a diversified, environmental technology company with products that enable a cleaner and safer planet while actively reducing our environmental impact.” Source: RevenueBase Database · checked Sep 20, 2026
13	Metiri Group	Indirect evidence	Clovis, CA, United StatesHQ checked Sep 20, 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 20, 2026
14	Patriot Environmental Services	Indirect evidence	Signal Hill, CA, United StatesHQ checked Sep 20, 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 20, 2026
15	Cleanair Engineering	Indirect evidence	Palatine, IL, United StatesHQ checked Sep 20, 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 20, 2026
16	Quest Resource Management Group, A Qrhc Company Nasdaq Qrhc	Indirect evidence	The Colony, TX, United StatesHQ checked Sep 20, 2026	51-200	147 contacts →
	Indirect evidence “Quest Resource Management Group, a subsidiary of Quest Resource Holding Corporation (Nasdaq: QRHC), is a full-service environmental consulting and management company headquartered…” Source: RevenueBase Database · checked Sep 20, 2026
17	Anguil Environmental Systems, INC	Indirect evidence	Milwaukee, WI, United StatesHQ checked Sep 20, 2026	51-200	140 contacts →
	Indirect evidence “Anguil Environmental provides highly-engineered, environmental equipment and service solutions that help clients solve complex industrial air and water challenges across the globe.” Source: RevenueBase Database · checked Sep 20, 2026
18	Mostardi Platt	Indirect evidence	Elmhurst, IL, United StatesHQ checked Sep 20, 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 20, 2026
19	Ensolum, LLC	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 20, 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 20, 2026
20	Milestone Environmental	Indirect evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	201-500	128 contacts →
	Indirect evidence “Milestone Environmental is a leading environmental infrastructure and services company delivering reliable, safe, compliant and best-in-class waste management solutions.” Source: RevenueBase Database · checked Sep 20, 2026
21	Airtek Construction	Partial evidence	Troy, United StatesHQ checked Sep 20, 2026	51-200	122 contacts →
	Partial 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 20, 2026
22	PPM Consultants, INC	Indirect evidence	Birmingham Office, AL, United StatesHQ checked Sep 20, 2026	51-200	118 contacts →
	Indirect evidence “PPM Consultants is an environmental and engineering consulting firm providing services to industrial, commercial, and governmental clients.” Source: RevenueBase Database · checked Sep 20, 2026
23	Fuel Tech, INC	Indirect evidence	Warrenville, IL, United StatesHQ checked Sep 20, 2026	51-200	113 contacts →
	Indirect evidence “Fuel Tech provides multi-pollutant emissions control and water treatment technologies using a cost-effective and sustainable approach.” Source: RevenueBase Database · checked Sep 20, 2026
24	Cascadia Consulting Group	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 20, 2026	51-200	110 contacts →
	Indirect evidence “Cascadia Consulting Group is a majority women-owned consulting firm specializing in environmental and sustainability solutions.” Source: RevenueBase Database · checked Sep 20, 2026
25	Techlaw	Indirect evidence	Chantilly, VA, United StatesHQ checked Sep 20, 2026	201-500	104 contacts →
	Indirect evidence “Established in 1983, TechLaw provides environmental and management consulting services to the public sector nationwide.” Source: RevenueBase Database · checked Sep 20, 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: pollution prevention 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 pollution prevention companies.
Partial evidence: Its own public description names part of pollution prevention companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name pollution prevention 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 795 pollution prevention companies based in the United States

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Pollution prevention companies based in the United States at a glance

As of Sep 20, 2026

34.9%Verified-email coverage

39.7Average contacts per company

1-10Median size (employees)

3.4%Largest-city concentration · Houston

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

404

11-50

284

51-200

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 795 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 pollution prevention 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 “pollution prevention 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 pollution prevention 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 pollution prevention 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, 11,013 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 20, 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.

Pollution prevention companies by metro

Pollution prevention companies in Houston27

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 pollution prevention 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 pollution prevention companies are there based in the United States?

RevenueBase identified 795 pollution prevention 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?

Clean Harbors, headquartered in Norwell, tops this list with the largest team on record.

Which city has the most pollution prevention companies?

Houston leads with 27 headquartered companies, followed by Chicago (9) and Indianapolis (9).

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 11,013 verified decision-maker contacts tracked across these 795 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 20, 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.