Company lists · Data refreshed October 2026

Top 25 Environmental compliance companies for construction based in the United States

Name: Environmental compliance companies for construction based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 12, 2026 2,737 companies tracked

RevenueBase identified 2,737 company matches for environmental compliance companies for construction associated with the United States as of October 2026 and tracks 53,471 professional contacts across them, including 24,907 with verified work emails. Houston is the largest hub.

This list covers company matches for environmental compliance companies for construction 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 October 12, 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 Oct 12, 2026 How this list was built

2,737Companies

53,471Contacts tracked

24,907Verified emails

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The 25 largest environmental compliance companies for construction based in the United States

Ranked by team size

Top 25 of 2,737 company matches for environmental compliance companies for construction based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 12, 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	Swca Environmental Consultants	Exact match	Phoenix, AZ, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,661 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 · Oct 12, 2026 · View company records in RevenueBase
2	Apex Companies	Exact match	Rockville, MD, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,266 contacts →
	Exact match “Who is Apex?” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
3	Barr Engineering CO	Exact match	Minneapolis, MN, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,108 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 · Oct 12, 2026 · View company records in RevenueBase
4	Trinity Consultants	Exact match	Dallas, TX, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,077 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 · Oct 12, 2026 · View company records in RevenueBase
5	Alliance Technical Group	Exact match	Decatur, AL, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,048 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 · Oct 12, 2026 · View company records in RevenueBase
6	IEA	Exact match	Brooklyn Park, MN, United StatesHQ recorded Oct 12, 2026	n/a	1,001 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 · Oct 12, 2026 · View company records in RevenueBase
7	ATC Group Services LLC	Exact match	Lafayette, LA, United StatesHQ recorded Oct 12, 2026	1,001-5,000	872 contacts →
	Exact match “ATC Group Services LLC is now Atlas.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
8	Montrose Environmental Group	Exact match	Little Rock, AR, United StatesHQ recorded Oct 12, 2026	1,001-5,000	843 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 · Oct 12, 2026 · View company records in RevenueBase
9	Environmental Science Associates	Exact match	San Francisco, CA, United StatesHQ recorded Oct 12, 2026	501-1,000	730 contacts →
	Exact match “ESA is a 100% employee-owned environmental consulting firm.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
10	Antea Group USA	Exact match	St. Paul, MN, United StatesHQ recorded Oct 12, 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 · Oct 12, 2026 · View company records in RevenueBase
11	EBI Consulting	Exact match	Burlington, MA, United StatesHQ recorded Oct 12, 2026	501-1,000	542 contacts →
	Exact match “For 35 years we have been helping investors, lenders, owners, developers, contractors, and property managers reduce risk and optimize their built facilities, infrastructure and…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
12	BSC Group	Exact match	Boston, MA, United StatesHQ recorded Oct 12, 2026	51-200	513 contacts →
	Exact match “BSC Group, Inc.(BSC) is a multidisciplinary consulting firm with a staff of more than 200 professionals and offices in Boston, Worcester, Andover, and West Yarmouth, MA, as well…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
13	Rincon Consultants	Exact match	Ventura, CA, United StatesHQ recorded Oct 12, 2026	501-1,000	502 contacts →
	Exact match “Rincon Consultants is a multidisciplinary environmental, planning, and advisory firm.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
14	VLS Environmental Solutions, LLC	Exact match	Houston, TX, United StatesHQ recorded Oct 12, 2026	1,001-5,000	496 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 · Oct 12, 2026 · View company records in RevenueBase
15	ROUX	Exact match	Islandia, NY, United StatesHQ recorded Oct 12, 2026	201-500	468 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 · Oct 12, 2026 · View company records in RevenueBase
16	Groundwater & Environmental Services, INC	Exact match	Wall Township, NJ, United StatesHQ recorded Oct 12, 2026	201-500	462 contacts →
	Exact match “We are Groundwater & Environmental Services, Inc, better known as GES.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
17	Hydrogeologic, INC	Exact match	Reston, VA, United StatesHQ recorded Oct 12, 2026	501-1,000	440 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 · Oct 12, 2026 · View company records in RevenueBase
18	Western Ecosystems Technology, Inc. West	Exact match	Cheyenne, WY, United StatesHQ recorded Oct 12, 2026	201-500	419 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 · Oct 12, 2026 · View company records in RevenueBase
19	P2s	Exact match	Long Beach, CA, United StatesHQ recorded Oct 12, 2026	201-500	381 contacts →
	Exact match “P2S has brought forward-thinking, sustainable engineering solutions to California, the Pacific Northwest, and beyond, for over 30 years.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
20	LSA	Exact match	Irvine, CA, United StatesHQ recorded Oct 12, 2026	201-500	348 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 · Oct 12, 2026 · View company records in RevenueBase
21	Environmental Consulting & Technology, Inc. ECT	Exact match	Gainesville, FL, United StatesHQ recorded Oct 12, 2026	201-500	330 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 · Oct 12, 2026 · View company records in RevenueBase
22	Ecology And Environment, INC	Exact match	Lancaster, NY, United StatesHQ recorded Oct 12, 2026	5,001-10,000	298 contacts →
	Exact match “E&E is now WSP USA.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
23	CME Associates	Exact match	Parlin, NJ, United StatesHQ recorded Oct 12, 2026	201-500	282 contacts →
	Exact match “CME Associates, with eight (8) office locations throughout New Jersey, provides a complete range of Environmental, Geotechnical, Engineering, Surveying and Planning services.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
24	Wetland Studies And Solutions, Inc. Wssi , A Davey Tree Company	Exact match	Gainesville, VA, United StatesHQ recorded Oct 12, 2026	201-500	281 contacts →
	Exact match “For more than 30 years, WSSI has been the trusted partner in environmental, regulatory, cultural resources, and water resources engineering consulting.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
25	GSI Environmental INC	Exact match	Houston, TX, United StatesHQ recorded Oct 12, 2026	201-500	272 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 · Oct 12, 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 compliance companies for construction”. 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 2,737 environmental compliance companies for construction based in the United States

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Environmental compliance companies for construction based in the United States at a glance

As of Oct 12, 2026

46.6%Verified-email coverage

19.5Average contacts per company

1-10Median size (employees)

2.2%Largest-city concentration · Houston

Oct 12, 2026Page data refreshed

Companies by employee count

1-10

1,378

11-50

1,004

51-200

275

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 2,737 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 compliance companies for construction” 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 24,907 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 October 12, 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 compliance companies for construction 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 compliance companies for construction”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many environmental compliance companies for construction are there based in the United States?

RevenueBase identified 2,737 company matches for environmental compliance companies for construction associated with the United States as of October 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 compliance companies for construction?

Houston leads with 60 company records, followed by Austin (31) and New York (30).

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 24,907 professional contacts with verified work emails tracked across these 2,737 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 October 12, 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.