Company lists · Data refreshed November 2026

Top 25 Environmental management services based in the United States

Name: Environmental management services based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 5, 2026 5,493 companies tracked

RevenueBase identified 5,493 company matches for environmental management services associated with the United States as of November 2026 and tracks 137,358 professional contacts across them, including 53,777 with verified work emails. Houston is the largest hub.

This list covers company matches for environmental management services 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 November 5, 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 Nov 5, 2026 How this list was built

5,493Companies

137,358Contacts tracked

53,777Verified emails

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The 25 largest environmental management services based in the United States

Ranked by team size

Top 25 of 5,493 company matches for environmental management services based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 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 Nov 5, 2026	10001+	9,552 contacts →
	Exact match “Clean Harbors is North America’s leading provider of environmental and industrial services.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2	APTIM	Exact match	Baton Rouge, OH, United StatesHQ recorded Nov 5, 2026	1,001-5,000	2,751 contacts →
	Exact match “APTIM enhances the quality of the environment, wellbeing of people, resilience of communities, and opportunity for employees to make a difference, not just a living.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3	Brown And Caldwell	Exact match	Walnut Creek, CA, United StatesHQ recorded Nov 5, 2026	1,001-5,000	2,553 contacts →
	Exact match “Headquartered in Walnut Creek, Calif, Brown and Caldwell is an employee-owned firm with 2,100+ professionals serving clients locally and globally from 52 locations.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4	Civil & Environmental Consultants, INC	Exact match	Moon Township, MO, United StatesHQ recorded Nov 5, 2026	1,001-5,000	2,276 contacts →
	Exact match “Civil & Environmental Consultants, Inc.(CEC) provides comprehensive market-oriented consulting services that advance the strategic business objectives of its clients.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5	Providence	Exact match	Baton Rouge, LA, United StatesHQ recorded Nov 5, 2026	n/a	2,268 contacts →
	Exact match “Providence is an employee-owned engineering and environmental consulting firm.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6	Swca Environmental Consultants	Exact match	Phoenix, MA, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,695 contacts →
	Exact match “Founded on a commitment to sound science and creative solutions, SWCA is a leader in environmental and management consulting services.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7	Weston Solutions, INC	Exact match	West Chester, PA, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,559 contacts →
	Exact match “Weston Solutions, Inc.(Weston) is a 100% employee-owned environmental and infrastructure services firm committed to safety and providing measurable client value.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8	Partner Engineering & Science, INC	Exact match	Torrance, WA, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,481 contacts →
	Exact match “Partner Assessment Corp.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9	Sphera	Exact match	Chicago, IL, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,410 contacts →
	Exact match “Sphera helps companies understand and manage risk across their operations, products and supply chains by bringing safety, sustainability and performance data into one clear…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10	PMI	Exact match	Irvine, CA, United StatesHQ recorded Nov 5, 2026	n/a	1,371 contacts →
	Exact match “Training and Development Solutions” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11	US Ecology Inc., A Republic Services Company	Exact match	Boise, MI, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,330 contacts →
	Exact match “US Ecology is a Republic Services company.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12	Apex Companies	Exact match	Rockville, MD, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,321 contacts →
	Exact match “Who is Apex?” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13	Barr Engineering CO	Exact match	Minneapolis, NV, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,146 contacts →
	Exact match “Barr provides engineering and environmental consulting services to clients across the Midwest, throughout the Americas, and around the world.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14	Triumvirate Environmental	Exact match	Somerville, MD, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,145 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 · Nov 5, 2026 · View company records in RevenueBase
15	Trinity Consultants	Exact match	Dallas, TX, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,114 contacts →
	Exact match “Trinity Consultants is a global team of specialists helping organizations solve complex challenges in environmental compliance, ecological protection, infrastructure and built…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16	Alliance Technical Group	Exact match	Decatur, PA, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,088 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 · Nov 5, 2026 · View company records in RevenueBase
17	Crystal Clean	Exact match	Hoffman Estates, IL, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,029 contacts →
	Exact match “Crystal Clean is a national leader in the environmental services market, providing the smart alternative.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18	IEA	Exact match	Brooklyn Park, MN, United StatesHQ recorded Nov 5, 2026	n/a	1,013 contacts →
	Exact match “The Institute for Environmental Assessment, Inc.(IEA) is small business committed to providing trusted environmental safety consulting services for private and public…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19	FCC Environmental Services	Exact match	Houston, TX, United StatesHQ recorded Nov 5, 2026	1,001-5,000	895 contacts →
	Exact match “A Leader in Environmental Services FCC Environmental Services is proud to serve over 14 million Americans across 7 states, supported by a dedicated team of Our 1200+ vehicle fleet…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20	ENVU	Exact match	Cary, NC, United StatesHQ recorded Nov 5, 2026	1,001-5,000	882 contacts →
	Exact match “At Envu, we partner with our customers to design world-class, forward-thinking innovations that protect and enhance the health of environments around the world.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21	ATC Group Services LLC	Exact match	Lafayette, MA, United StatesHQ recorded Nov 5, 2026	1,001-5,000	876 contacts →
	Exact match “ATC Group Services LLC is now Atlas.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22	Montrose Environmental Group	Exact match	Little Rock, AR, United StatesHQ recorded Nov 5, 2026	1,001-5,000	861 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 · Nov 5, 2026 · View company records in RevenueBase
23	The Foth Companies	Exact match	De Pere, MN, United StatesHQ recorded Nov 5, 2026	501-1,000	831 contacts →
	Exact match “By combining science, engineering, and technology with a true collaborative spirit, Foth has delivered innovative solutions to our clients since 1938.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24	DUDEK	Exact match	Encinitas, CA, United StatesHQ recorded Nov 5, 2026	501-1,000	829 contacts →
	Exact match “Dudek is an environmental, planning, and engineering consulting firm.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25	Environmental Science Associates	Exact match	San Francisco, OR, United StatesHQ recorded Nov 5, 2026	501-1,000	748 contacts →
	Exact match “ESA is a 100% employee-owned environmental consulting firm.” Recorded in the RevenueBase company graph · Nov 5, 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 management services”. 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 5,493 environmental management services based in the United States

See the full list, filter by size, metro and specialty, and access 53,777 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Environmental management services based in the United States at a glance

As of Nov 5, 2026

39.2%Verified-email coverage

25.0Average contacts per company

1-10Median size (employees)

2.0%Largest-city concentration · Houston

Nov 5, 2026Page data refreshed

Companies by employee count

1-10

2,783

11-50

1,858

51-200

583

201-500

137

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 5,493 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 management services” 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 53,777 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 5, 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.

Environmental management services 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 “environmental management services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many environmental management services are there based in the United States?

RevenueBase identified 5,493 company matches for environmental management services associated with the United States 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?

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

Which city has the most environmental management services?

Houston leads with 111 company records, followed by New York (87) and Denver (50).

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 53,777 professional contacts with verified work emails tracked across these 5,493 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 5, 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.