Company lists · Data refreshed September 2026

Top 25 Industrial environmental compliance contractors based in the United States

Name: Industrial environmental compliance contractors 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 3,672 companies tracked

RevenueBase identified 3,672 company matches for industrial environmental compliance contractors associated with the United States as of September 2026 and tracks 81,459 professional contacts across them, including 29,725 with verified work emails. Houston is the largest hub.

This list covers company matches for industrial environmental compliance contractors 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 17, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 17, 2026 How this list was built

3,672Companies

81,459Contacts tracked

29,725Verified emails

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The 25 largest industrial environmental compliance contractors based in the United States

Ranked by team size

Top 25 of 3,672 company matches for industrial environmental compliance contractors based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Clean Harbors	Exact match	Norwell, MA, United StatesHQ recorded Sep 17, 2026	10001+	8,924 contacts →
	Exact match “Clean Harbors is North America’s leading provider of environmental and industrial services.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	Performance Contractors	Exact match	Baton Rouge, LA, United StatesHQ recorded Sep 17, 2026	1,001-5,000	2,757 contacts →
	Exact match “We began as a merit shop general industrial contractor back in 1979.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3	Montrose Environmental Group	Exact match	Little Rock, AR, United StatesHQ recorded Sep 17, 2026	1,001-5,000	1,529 contacts →
	Exact match “Onterris (formerly Montrose Environmental Group) was one of the first to see environmental responsibility as not just an imperative but as a strategic asset.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4	Triumvirate Environmental	Exact match	Somerville, MA, United StatesHQ recorded Sep 17, 2026	1,001-5,000	1,068 contacts →
	Exact match “Triumvirate Environmental provides sustainable environmental solutions to leading companies in the Life Sciences, Healthcare, Education, and Advanced Manufacturing markets.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5	Trinity Consultants	Exact match	Dallas, TX, United StatesHQ recorded Sep 17, 2026	1,001-5,000	961 contacts →
	Exact match “Trinity Consultants is a global team of experts helping organizations solve complex challenges in environmental compliance, ecological protection, infrastructure performance, and…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6	Alliance Technical Group	Exact match	Decatur, AL, United StatesHQ recorded Sep 17, 2026	1,001-5,000	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 17, 2026 · View company records in RevenueBase
7	ATC Group Services LLC	Exact match	Lafayette, LA, United StatesHQ recorded Sep 17, 2026	1,001-5,000	865 contacts →
	Exact match “ATC Group Services LLC is now Atlas.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	Antea Group USA	Exact match	St. Paul, MN, United StatesHQ recorded Sep 17, 2026	1,001-5,000	658 contacts →
	Exact match “Antea Group is an international engineering and environmental consulting firm specializing in full-service solutions in the fields of environment, health and safety, and…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	VLS Environmental Solutions, LLC	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	1,001-5,000	481 contacts →
	Exact match “At VLS, we address your company’s most significant hurdles with waste management and compliance through sustainable solutions.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	Rincon Consultants	Exact match	Ventura, CA, United StatesHQ recorded Sep 17, 2026	501-1,000	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 17, 2026 · View company records in RevenueBase
11	Evergreen North America Industrial Services	Exact match	La Porte, TX, United StatesHQ recorded Sep 17, 2026	1,001-5,000	468 contacts →
	Exact match “Evergreen North America Industrial Services offers a comprehensive range of Industrial Services for oil refineries, petrochemical plants, power generation plants, manufacturing…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12	Ensafe	Exact match	Memphis, TN, United StatesHQ recorded Sep 17, 2026	201-500	463 contacts →
	Exact match “Innovation is not happenstance at EnSafe Inc.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13	Thompson Industrial Services, LLC	Exact match	Sumter, SC, United StatesHQ recorded Sep 17, 2026	501-1,000	456 contacts →
	Exact match “Thompson Industrial Services, LLC offers the broadest line of specialized industrial cleaning services with advanced automated technology and seasoned personnel.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	Groundwater & Environmental Services, INC	Exact match	Wall Township, NJ, United StatesHQ recorded Sep 17, 2026	201-500	447 contacts →
	Exact match “We are Groundwater & Environmental Services, Inc, better known as GES.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	ROUX	Exact match	Islandia, NY, United StatesHQ recorded Sep 17, 2026	201-500	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 17, 2026 · View company records in RevenueBase
16	Hydrogeologic, INC	Exact match	Reston, VA, United StatesHQ recorded Sep 17, 2026	501-1,000	430 contacts →
	Exact match “HydroGeoLogic, Inc.(HGL) is an employee-owned company with over 36 years of experience developing innovative, effective, and sustainable engineering and remediation solutions to…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	Stratus Building Solutions	Exact match	North Hollywood, CA, United StatesHQ recorded Sep 17, 2026	1,001-5,000	416 contacts →
	Exact match “The Leading Provider Of Green Commercial Janitorial Services Stratus Clean is leading the way in health and environmentally conscious commercial cleaning services.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	SET Environmental, INC	Exact match	Wheeling, IL, United StatesHQ recorded Sep 17, 2026	201-500	364 contacts →
	Exact match “Combining a tradition of integrity, innovation, and excellence, SET Environmental provides environmental management services to a nationwide client base.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19	All4	Exact match	Kimberton, PA, United StatesHQ recorded Sep 17, 2026	201-500	331 contacts →
	Exact match “ALL4 is a global consulting firm committed to shaping a sustainable future through innovative environmental, health, and safety (EHS) and digital solutions.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	MPS Group	Exact match	Farmington Hills, MI, United StatesHQ recorded Sep 17, 2026	1,001-5,000	331 contacts →
	Exact match “When it comes to managed professional services, there’s one company that puts the latest technologies, quality processes, and innovative management techniques to work for you –…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	Sevenson Environmental Services INC	Exact match	Niagara Falls, NY, United StatesHQ recorded Sep 17, 2026	501-1,000	277 contacts →
	Exact match “Sevenson Environmental Services, Inc.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22	GSI Environmental INC	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	201-500	259 contacts →
	Exact match “GSI Environmental, Inc.(GSI), is an environmental engineering and science consulting firm committed to measuring, analyzing, and solving complex environmental problems around the…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	Forgen	Exact match	Centennial, CO, United StatesHQ recorded Sep 17, 2026	201-500	255 contacts →
	Exact match “At Forgen, we leave the planet better than we found it.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	Alliance Environmental Group, LLC	Exact match	Azusa, CA, United StatesHQ recorded Sep 17, 2026	501-1,000	254 contacts →
	Exact match “Alliance is one of the most experienced and trusted environmental contractors in California.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25	Ancon Services	Exact match	Los Alamitos, CA, United StatesHQ recorded Sep 17, 2026	501-1,000	248 contacts →
	Exact match “Founded in 1968, Ancon Services has expanded our services to cover virtually all of our clients industrial and environmental needs.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “industrial environmental compliance contractors”. 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 3,672 industrial environmental compliance contractors based in the United States

See the full list, filter by size, metro and specialty, and access 29,725 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Industrial environmental compliance contractors based in the United States at a glance

As of Sep 17, 2026

36.5%Verified-email coverage

22.2Average contacts per company

11-50Median size (employees)

2.3%Largest-city concentration · Houston

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

1,664

11-50

1,374

51-200

461

201-500

106

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 3,672 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with the United States whose business descriptions match “industrial environmental compliance contractors” 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 29,725 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 17, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Industrial environmental compliance contractors by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “industrial environmental compliance contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many industrial environmental compliance contractors are there based in the United States?

RevenueBase identified 3,672 company matches for industrial environmental compliance contractors 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?

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

Which city has the most industrial environmental compliance contractors?

Houston leads with 86 company records, followed by New York (39) and Denver (35).

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 29,725 professional contacts with verified work emails tracked across these 3,672 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 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 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.