Company lists · Data refreshed November 2026

Top 25 Environmental technology advisory services based in the United States

RevenueBase identified 1,609 company matches for environmental technology advisory services associated with the United States as of November 2026 and tracks 45,744 professional contacts across them, including 18,528 with verified work emails. Houston is the largest hub.

This list covers company matches for environmental technology advisory 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
1,609Companies
45,744Contacts tracked
18,528Verified emails
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The 25 largest environmental technology advisory services based in the United States

Ranked by team size
Top 25 of 1,609 company matches for environmental technology advisory 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 matchPhoenix, MA, United StatesHQ recorded Nov 6, 20261,001-5,0001,695 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 6, 2026 · View company records in RevenueBase
2Exact matchTampa, FL, United StatesHQ recorded Nov 6, 20261,001-5,0001,275 contacts →

Exact match

“At Verdantas, we blend engineering and environmental science together with advanced technology and world-renowned labs to create solutions with the big picture in mind.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchMinneapolis, MN, United StatesHQ recorded Nov 6, 20261,001-5,0001,149 contacts →

Exact match

“At Braun Intertec, we work at the intersection of the natural and built environments, combining science, technology, and engineering.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchDallas, TX, United StatesHQ recorded Nov 6, 20261,001-5,0001,114 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 6, 2026 · View company records in RevenueBase
5Exact matchDecatur, PA, United StatesHQ recorded Nov 6, 20261,001-5,0001,088 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 6, 2026 · View company records in RevenueBase
6Exact matchLafayette, MA, United StatesHQ recorded Nov 6, 20261,001-5,000876 contacts →

Exact match

“ATC Group Services LLC is now Atlas.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchLittle Rock, AR, United StatesHQ recorded Nov 6, 20261,001-5,000861 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 6, 2026 · View company records in RevenueBase
8Exact matchDe Pere, MN, United StatesHQ recorded Nov 6, 2026501-1,000831 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 6, 2026 · View company records in RevenueBase
9Exact matchSt. Paul, MD, United StatesHQ recorded Nov 6, 20261,001-5,000649 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 · Nov 6, 2026 · View company records in RevenueBase
10Exact matchBurlington, CA, United StatesHQ recorded Nov 6, 2026501-1,000553 contacts →

Exact match

“EBI Consulting is a national environmental and engineering consulting firm helping asset owners, investors, lenders, operators, and telecom infrastructure providers protect value…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchVentura, CA, United StatesHQ recorded Nov 6, 2026501-1,000509 contacts →

Exact match

“Rincon Consultants is a multidisciplinary environmental, planning, and advisory firm.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchIslandia, NY, United StatesHQ recorded Nov 6, 2026201-500474 contacts →

Exact match

“The Roux organization applies sophisticated scientific, technical, and managerial resources to develop and implement effective, efficient, and sustainable solutions to our…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchMemphis, TN, United StatesHQ recorded Nov 6, 2026201-500470 contacts →

Exact match

“Innovation is not happenstance at EnSafe Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchWall Township, VA, United StatesHQ recorded Nov 6, 2026201-500470 contacts →

Exact match

“We are Groundwater & Environmental Services, Inc, better known as GES.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchWheeling, MI, United StatesHQ recorded Nov 6, 2026201-500398 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 · Nov 6, 2026 · View company records in RevenueBase
16Exact matchKimberton, TX, United StatesHQ recorded Nov 6, 2026201-500381 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 · Nov 6, 2026 · View company records in RevenueBase
17Exact matchLeesburg, HI, United StatesHQ recorded Nov 6, 2026501-1,000373 contacts →

Exact match

“Lynker delivers innovative solutions to support global environmental security and economic prosperity as a trusted partner to governments, communities, and industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchIrvine, CA, United StatesHQ recorded Nov 6, 2026201-500360 contacts →

Exact match

“LSA is a diversified environmental, transportation, and community planning firm that evolved from a small consulting firm.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchBoulder, CO, United StatesHQ recorded Nov 6, 2026201-500335 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchLancaster, NY, United StatesHQ recorded Nov 6, 20265,001-10,000310 contacts →

Exact match

“E&E is now WSP USA.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchHouston, CA, United StatesHQ recorded Nov 6, 2026201-500281 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 · Nov 6, 2026 · View company records in RevenueBase
22Exact matchBrookfield, WI, United StatesHQ recorded Nov 6, 2026201-500279 contacts →

Exact match

“Opus Inspection Technologies is a leader in developing, implementing and managing innovative technology and system solutions that enable customers worldwide to address their…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchLos Alamitos, CA, United StatesHQ recorded Nov 6, 2026501-1,000265 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 · Nov 6, 2026 · View company records in RevenueBase
24Exact 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
25Exact matchPittsfield, ME, United StatesHQ recorded Nov 6, 2026201-500244 contacts →

Exact match

“At Kleinschmidt, we work primarily with energy companies and government agencies in North America to protect and enhance the environment without compromising performance.”

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

Showing 25 of 1,609 environmental technology advisory services based in the United States

See the full list, filter by size, metro and specialty, and access 18,528 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Environmental technology advisory services based in the United States at a glance

As of Nov 6, 2026
40.5%Verified-email coverage
28.4Average contacts per company
1-10Median size (employees)
2.8%Largest-city concentration · Houston
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
839
11-50
569
51-200
133
201-500
32
501-1,000
9
1,001-5,000
17
5,001-10,000
2

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 1,609 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 technology advisory 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 18,528 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.

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

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

RevenueBase identified 1,609 company matches for environmental technology advisory 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?

Swca Environmental Consultants tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most environmental technology advisory services?

Houston leads with 45 company records, followed by New York (19) and Seattle (19).

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 18,528 professional contacts with verified work emails tracked across these 1,609 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.