Company lists · Data refreshed September 2026

Top 25 Environmental foundations based in the United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 764 companies tracked

RevenueBase identified 764 company matches for environmental foundations associated with the United States as of September 2026 and tracks 18,026 professional contacts across them, including 7,552 with verified work emails. New York is the largest hub.

This list covers company matches for environmental foundations 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 19, 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 19, 2026 How this list was built

764Companies

18,026Contacts tracked

7,552Verified emails

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The 25 largest environmental foundations based in the United States

Ranked by team size

Top 25 of 764 company matches for environmental foundations based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 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	The Nature Conservancy	Exact match	Arlington, VA, United StatesHQ recorded Sep 19, 2026	5,001-10,000	6,526 contacts →
	Exact match “Air, water, food, shelter, income: nature sustains every aspect of our lives.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2	Swca Environmental Consultants	Exact match	Phoenix, AZ, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,629 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 · Sep 19, 2026 · View company records in RevenueBase
3	Environmental Science Associates	Exact match	San Francisco, CA, United StatesHQ recorded Sep 19, 2026	501-1,000	732 contacts →
	Exact match “ESA is a 100% employee-owned environmental consulting firm.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4	Western Ecosystems Technology, Inc. West	Exact match	Cheyenne, WY, United StatesHQ recorded Sep 19, 2026	201-500	408 contacts →
	Exact match “WEST provides environmental and statistical consulting services and contract research nationally and internationally to industry, government, and private organizations.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5	Environmental Consulting & Technology, Inc. ECT	Exact match	Gainesville, FL, United StatesHQ recorded Sep 19, 2026	201-500	305 contacts →
	Exact match “Environmental Consulting & Technology, Inc.(ECT) is a multi-disciplinary environmental and sustainability consulting firm delivering strategy, permitting, design, and management…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6	Environmental Works, INC	Exact match	Springfield, MO, United StatesHQ recorded Sep 19, 2026	201-500	238 contacts →
	Exact match “Environmental Works, Inc.(EWI) offers truly comprehensive environmental solutions for a variety of industries, businesses, and municipalities.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7	Metiri Group	Exact match	Clovis, CA, United StatesHQ recorded Sep 19, 2026	n/a	233 contacts →
	Exact match “Appl Inc is an environmental services company based out of 908 N Temperance Ave, Clovis, CA, United States.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8	Normandeau Associates, INC	Exact match	Bedford, NH, United StatesHQ recorded Sep 19, 2026	201-500	189 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9	Wra, INC	Exact match	San Rafael, CA, United StatesHQ recorded Sep 19, 2026	51-200	183 contacts →
	Exact match “WRA is an environmental consultancy that’s making a net positive impact.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10	Industrial Economics, Incorporated IEC	Exact match	Cambridge, MA, United StatesHQ recorded Sep 19, 2026	51-200	163 contacts →
	Exact match “IEc is an environmental consulting firm with four decades of experience providing consulting services to a diverse client base.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11	Quest Resource Management Group, A Qrhc Company Nasdaq Qrhc	Exact match	The Colony, TX, United StatesHQ recorded Sep 19, 2026	51-200	147 contacts →
	Exact match “Quest Resource Management Group, a subsidiary of Quest Resource Holding Corporation (Nasdaq: QRHC), is a full-service environmental consulting and management company headquartered…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12	Cascadia Consulting Group	Exact match	Seattle, WA, United StatesHQ recorded Sep 19, 2026	51-200	110 contacts →
	Exact match “Cascadia Consulting Group is a majority women-owned consulting firm specializing in environmental and sustainability solutions.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13	Techlaw	Exact match	Chantilly, VA, United StatesHQ recorded Sep 19, 2026	201-500	104 contacts →
	Exact match “Established in 1983, TechLaw provides environmental and management consulting services to the public sector nationwide.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14	Environmental LAW Institute	Exact match	Washington, DC, United StatesHQ recorded Sep 19, 2026	11-50	102 contacts →
	Exact match “The Environmental Law Institute (ELI) makes law work for people, places, and the planet.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15	EEE Consulting, Inc. 3e	Exact match	Mechanicsville, VA, United StatesHQ recorded Sep 19, 2026	11-50	101 contacts →
	Exact match “Consulting, Inc.(3e) is a dynamic and progressive certified small business that specializes in environmental studies, environmental engineering, environmental education, and…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16	Cary Institute Of Ecosystem Studies	Exact match	Millbrook, NY, United StatesHQ recorded Sep 19, 2026	51-200	98 contacts →
	Exact match “Founded in 1983, the Cary Institute of Ecosystem Studies is one of the world’s leading independent environmental research organizations.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17	AKT Peerless	Exact match	Saginaw, MI, United StatesHQ recorded Sep 19, 2026	51-200	96 contacts →
	Exact match “We are environmental consultants and redevelopment experts who are proud to help build sustainable communities.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18	Water & AIR Research, INC	Exact match	Gainesville, FL, United StatesHQ recorded Sep 19, 2026	11-50	87 contacts →
	Exact match “Water and Air Research, Inc.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19	Earthcon Consultants, INC	Exact match	Marietta, GA, United StatesHQ recorded Sep 19, 2026	51-200	87 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20	Bridging The GAP	Exact match	Kansas City, MO, United StatesHQ recorded Sep 19, 2026	11-50	83 contacts →
	Exact match “Bridging The Gap brings people together to protect and restore the web of life on Earth and foster inclusive, thriving communities through environmental education, innovation, and…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21	H. T. Harvey & Associates	Exact match	Los Gatos, CA, United StatesHQ recorded Sep 19, 2026	51-200	69 contacts →
	Exact match “Since 1970, the highly-trained ecologists and professionals at H.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
22	Conservation Strategy Fund	Exact match	Washington, DC, United StatesHQ recorded Sep 19, 2026	11-50	69 contacts →
	Exact match “Conservation Strategy Fund (CSF) sustains natural ecosystems and human communities through strategies powered by conservation economics.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23	ELOS	Exact match	Hammond, LA, United StatesHQ recorded Sep 19, 2026	51-200	67 contacts →
	Exact match “ELOS is a professional consulting firm with a background in environmental services, offering an interdisciplinary approach to program and project management.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24	Summitwest Environmental, INC	Exact match	Bend, OR, United StatesHQ recorded Sep 19, 2026	51-200	65 contacts →
	Exact match “SummitWest is an environmental consulting company that is home to a team of dynamic, solution-oriented thinkers.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25	WRD Environmental	Exact match	Chicago, IL, United StatesHQ recorded Sep 19, 2026	11-50	64 contacts →
	Exact match “WRD Environmental helps organizations committed to sustainability realize their vision.” Recorded in the RevenueBase company graph · Sep 19, 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 foundations”. 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 764 environmental foundations based in the United States

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Environmental foundations based in the United States at a glance

As of Sep 19, 2026

41.9%Verified-email coverage

23.6Average contacts per company

1-10Median size (employees)

2.1%Largest-city concentration · New York

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

479

11-50

215

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 764 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 foundations” 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 7,552 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 19, 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.

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 foundations”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many environmental foundations are there based in the United States?

RevenueBase identified 764 company matches for environmental foundations 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?

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

Which city has the most environmental foundations?

New York leads with 16 company records, followed by Chicago (15) and Los Angeles (15).

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 7,552 professional contacts with verified work emails tracked across these 764 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 19, 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.