Company lists · Data refreshed November 2026

Top 25 Environmental non governmental services based in the United States

RevenueBase identified 901 company matches for environmental non governmental services associated with the United States as of November 2026 and tracks 21,155 professional contacts across them, including 7,663 with verified work emails. Portland is the largest hub.

This list covers company matches for environmental non governmental 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 6, 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 6, 2026 How this list was built
901Companies
21,155Contacts tracked
7,663Verified emails
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The 25 largest environmental non governmental services based in the United States

Ranked by team size
Top 25 of 901 company matches for environmental non governmental services based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchArlington, NC, United StatesHQ recorded Nov 6, 20265,001-10,0006,991 contacts →

Exact match

“Air, water, food, shelter, income: nature sustains every aspect of our lives.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchArlington, WA, United StatesHQ recorded Nov 6, 2026201-500880 contacts →

Exact match

“The Student Conservation Association (SCA) is the largest provider of hands-on environmental conservation programs for youth and adults.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchSan Francisco, OR, United StatesHQ recorded Nov 6, 2026501-1,000748 contacts →

Exact match

“ESA is a 100% employee-owned environmental consulting firm.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchLincoln, MA, United StatesHQ recorded Nov 6, 2026201-500575 contacts →

Exact match

“Mass Audubon is the largest nature-based conservation organization in New England.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchDurango, CO, United StatesHQ recorded Nov 6, 202651-200258 contacts →

Exact match

“Conservation Legacy is a national organization dedicated to supporting locally based conservation service programs.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchSpringfield, AR, United StatesHQ recorded Nov 6, 2026201-500245 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 · Nov 6, 2026 · View company records in RevenueBase
7Exact matchGloucester, MA, United StatesHQ recorded Nov 6, 202651-200237 contacts →

Exact match

“Seaside Sustainability is a nationally recognized, award-winning 501(c)3 charitable organization dedicated to community engagement, education and environmental conservation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchSignal Hill, CA, United StatesHQ recorded Nov 6, 2026201-500234 contacts →

Exact match

“Patriot Environmental Services, a Crystal Clean company, is a leading environmental service provider with clients throughout the Southwestern United States.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchSt. Paul, IA, United StatesHQ recorded Nov 6, 2026201-500218 contacts →

Exact match

“At Conservation Corps Minnesota & Iowa, youth and young adults grow as environmental stewards and leaders while giving back to the community through meaningful service.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchClovis, CA, United StatesHQ recorded Nov 6, 2026n/a201 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 · Nov 6, 2026 · View company records in RevenueBase
11Exact matchSan Rafael, CA, United StatesHQ recorded Nov 6, 202651-200196 contacts →

Exact match

“WRA is an environmental consultancy that’s making a net positive impact.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchHonolulu, HI, United StatesHQ recorded Nov 6, 202651-200132 contacts →

Exact match

“Much like the Kupukupu Fern, which is one of the first plants to bring life back to the land after a devastating lava flow, Kupu’s heart is to bring life back to the people, land…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchSeattle, CA, United StatesHQ recorded Nov 6, 202651-200110 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 · Nov 6, 2026 · View company records in RevenueBase
14Exact matchChantilly, IL, United StatesHQ recorded Nov 6, 2026201-500109 contacts →

Exact match

“Established in 1983, TechLaw provides environmental and management consulting services to the public sector nationwide.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchSaginaw, IL, United StatesHQ recorded Nov 6, 202651-200107 contacts →

Exact match

“We are environmental consultants and redevelopment experts who are proud to help build sustainable communities.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchLong Island City, NY, United StatesHQ recorded Nov 6, 202651-200107 contacts →

Exact match

“Solar One is a non-profit, environmental education organization that fosters sustainable practices and environmental equity across New York City.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchMechanicsville, VA, United StatesHQ recorded Nov 6, 202611-50104 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 · Nov 6, 2026 · View company records in RevenueBase
18Exact matchMilwaukee, WI, United StatesHQ recorded Nov 6, 202651-200100 contacts →

Exact match

“Our vision is to inspire generations to build environmental curiosity, understanding, and respect.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchSeattle, WA, United StatesHQ recorded Nov 6, 202611-5096 contacts →

Exact match

“EarthCorps cultivates leaders and community partnerships to advance environmental justice.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchKansas City, MO, United StatesHQ recorded Nov 6, 202611-5095 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 · Nov 6, 2026 · View company records in RevenueBase
21Exact matchBaltimore, MD, United StatesHQ recorded Nov 6, 202651-20083 contacts →

Exact match

“We do environmental work.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchNew Haven, NY, United StatesHQ recorded Nov 6, 202611-5082 contacts →

Exact match

“Save the Sound leads environmental action across Connecticut, Westchester, NYC, and Long Island.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchLos Gatos, CA, United StatesHQ recorded Nov 6, 202651-20076 contacts →

Exact match

“Since 1970, the highly-trained ecologists and professionals at H.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchSan Jose, CA, United StatesHQ recorded Nov 6, 202611-5072 contacts →

Exact match

“For 25 years, the Santa Valley Open Space Authority – in partnership with community members, nonprofits, and other agencies – has contributed to the quality of life in our…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchChicago, IL, United StatesHQ recorded Nov 6, 202611-5071 contacts →

Exact match

“WRD Environmental helps organizations committed to sustainability realize their vision.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 901 environmental non governmental services based in the United States

See the full list, filter by size, metro and specialty, and access 7,663 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Environmental non governmental services based in the United States at a glance

As of Nov 6, 2026
36.2%Verified-email coverage
23.5Average contacts per company
1-10Median size (employees)
1.3%Largest-city concentration · Portland
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
546
11-50
264
51-200
61
201-500
14
501-1,000
6
1,001-5,000
3
5,001-10,000
1

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 901 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 non governmental 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 7,663 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 6, 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 non governmental services”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 901 company matches for environmental non governmental 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?

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 non governmental services?

Portland leads with 12 company records, followed by Seattle (11) and New York (10).

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 7,663 professional contacts with verified work emails tracked across these 901 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 6, 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.