Company lists · Data refreshed October 2026

Top 25 Conservation engineering firms worldwide

Name: Conservation engineering firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 10, 2026 25,552 companies tracked

RevenueBase identified 25,552 company matches for conservation engineering firms worldwide as of October 2026 and tracks 829,669 professional contacts across them, including 308,493 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for conservation engineering firms worldwide, 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 10, 2026. Country and city lists for conservation engineering firms follow the table.

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 10, 2026 How this list was built

25,552Companies

829,669Contacts tracked

308,493Verified emails

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The 25 largest conservation engineering firms worldwide

Ranked by team size

Top 25 of 25,552 company matches for conservation engineering firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 10, 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	AECOM	Exact match	Dallas, TX, United StatesHQ recorded Oct 10, 2026	10001+	65,956 contacts →
	Exact match “AECOM is the global infrastructure leader, committed to delivering a better world.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
2	Stantec	Exact match	Edmonton, AB, CanadaHQ recorded Oct 10, 2026	10001+	29,839 contacts →
	Exact match “Stantec empowers clients, people, and communities to rise to the world’s greatest challenges at a time when the world faces more unprecedented concerns than ever before.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
3	GHD	Exact match	Sydney, AustraliaHQ recorded Oct 10, 2026	10001+	15,044 contacts →
	Exact match “We are committed to addressing the world’s biggest challenges in the areas of water, energy and communities.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
4	Tetra Tech	Exact match	Pasadena, CA, United StatesHQ recorded Oct 10, 2026	10001+	13,725 contacts →
	Exact match “Tetra Tech is the leader in water, environment and sustainable infrastructure, providing high-end technical and engineering services for projects worldwide.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
5	WSP In Canada	Exact match	Montreal, QC, CanadaHQ recorded Oct 10, 2026	10001+	10,260 contacts →
	Exact match “We are one of the world’s leading professional services firms, uniting our engineering, advisory and science-based expertise to shape communities to advance humanity.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
6	Ch2m	Exact match	Englewood, CO, United StatesHQ recorded Oct 10, 2026	10001+	8,279 contacts →
	Exact match “CH2M is now Jacobs.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
7	CDM Smith	Exact match	Boston, MA, United StatesHQ recorded Oct 10, 2026	5,001-10,000	7,832 contacts →
	Exact match “CDM Smith is shaping what’s next, now, with world class solutions in water, environment, transportation and energy to public and private clients worldwide.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
8	COWI	Exact match	Lyngby, DenmarkHQ recorded Oct 10, 2026	5,001-10,000	7,558 contacts →
	Exact match “Together with customers, partners and colleagues, we shape a future where people and societies grow and flourish.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
9	TRC Companies, INC	Exact match	Windsor, CT, United StatesHQ recorded Oct 10, 2026	5,001-10,000	7,140 contacts →
	Exact match “TRC, a member of WSP, stands for adaptability.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
10	Terracon	Exact match	Olathe, KS, United StatesHQ recorded Oct 10, 2026	5,001-10,000	6,380 contacts →
	Exact match “Terracon is a 100 percent employee-owned consulting engineering firm providing quality services to clients.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
11	JAN DE NUL Group	Exact match	Capellen, LuxembourgHQ recorded Oct 10, 2026	5,001-10,000	5,615 contacts →
	Exact match “We are World Builders shaping water, land and energy.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
12	Michael Baker International	Exact match	Pittsburgh, PA, United StatesHQ recorded Oct 10, 2026	5,001-10,000	4,415 contacts →
	Exact match “Michael Baker International is a leading provider of engineering, consulting, and technology services spanning four Verticals: Infrastructure, Places and Facilities, Federal and…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
13	STV	Exact match	New York, NY, United StatesHQ recorded Oct 10, 2026	1,001-5,000	3,752 contacts →
	Exact match “Follow STV for practical insight into the infrastructure, ideas and people making communities better.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
14	National Engineering Services Pakistan PVT Limited Nespak	Exact match	Lahore, PakistanHQ recorded Oct 10, 2026	5,001-10,000	3,393 contacts →
	Exact match “NESPAK is Pakistan’s premier consultancy organization (established in 1973).” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
15	Golder	Exact match	Vancouver, BC, CanadaHQ recorded Oct 10, 2026	5,001-10,000	3,241 contacts →
	Exact match “Golder was acquired by WSP.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
16	Dewberry	Exact match	Fairfax, VA, United StatesHQ recorded Oct 10, 2026	1,001-5,000	2,918 contacts →
	Exact match “Dewberry is a leading, market-facing firm with a proven history of providing professional services to a wide variety of public- and private-sector clients.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
17	NIRAS	Exact match	Allerød, DenmarkHQ recorded Oct 10, 2026	1,001-5,000	2,701 contacts →
	Exact match “At NIRAS, we engineer solutions for a shared future.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
18	APTIM	Exact match	Baton Rouge, LA, United StatesHQ recorded Oct 10, 2026	1,001-5,000	2,692 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 · Oct 10, 2026 · View company records in RevenueBase
19	Multiconsult	Exact match	Oslo, NorwayHQ recorded Oct 10, 2026	1,001-5,000	2,577 contacts →
	Exact match “Multiconsult Norway is one of the leading firms of architectures, consulting engineers and designers in Norway.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
20	TYPSA	Exact match	San Sebastian De Los Reyes, SpainHQ recorded Oct 10, 2026	1,001-5,000	2,548 contacts →
	Exact match “TYPSA is an independent consulting and engineering services group, and a leader in infrastructure, energy, environmental and city solutions.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
21	Geosyntec Consultants	Exact match	Boca Raton, FL, United StatesHQ recorded Oct 10, 2026	1,001-5,000	2,521 contacts →
	Exact match “Geosyntec is a consulting and engineering firm that works with private and public sector clients to address new ventures and complex problems involving our environment, natural…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
22	Brown And Caldwell	Exact match	Walnut Creek, CA, United StatesHQ recorded Oct 10, 2026	1,001-5,000	2,510 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 · Oct 10, 2026 · View company records in RevenueBase
23	OAS S.A	Exact match	Salvador, BrazilHQ recorded Oct 10, 2026	5,001-10,000	2,411 contacts →
	Exact match “Somos uma empresa de engenharia, cuja missão é superar as expectativas dos nossos clientes através da transformação dos ambientes de forma inovadora, responsável e sustentável…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
24	Langan Engineering & Environmental Services	Exact match	Parsippany, NJ, United StatesHQ recorded Oct 10, 2026	1,001-5,000	2,402 contacts →
	Exact match “Langan's client-focused, highly entrepreneurial culture cultivates an environment of opportunities in which career growth and teamwork flourish.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
25	VHB	Exact match	Watertown, MA, United StatesHQ recorded Oct 10, 2026	1,001-5,000	2,379 contacts →
	Exact match “We are VHB.” Recorded in the RevenueBase company graph · Oct 10, 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 “conservation engineering firms”. 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 25,552 conservation engineering firms worldwide

See the full list, filter by size, metro and specialty, and access 308,493 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Conservation engineering firms worldwide at a glance

As of Oct 10, 2026

37.2%Verified-email coverage

32.5Average contacts per company

1-10Median size (employees)

1.2%Largest-city concentration · Sao Paulo

Oct 10, 2026Page data refreshed

Companies by employee count

1-10

12,936

11-50

8,460

51-200

2,761

201-500

732

501-1,000

263

1,001-5,000

223

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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.
Coverage: Every country. Country and city lists for conservation engineering firms are linked below.
What qualifies: Company records worldwide whose business descriptions match “conservation engineering firms” 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. 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 308,493 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 10, 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.

Conservation engineering firms by location

127 lists · largest first

Every Conservation engineering firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 “conservation engineering firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many conservation engineering firms are there worldwide?

RevenueBase identified 25,552 company matches for conservation engineering firms worldwide 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?

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

Which country has the most conservation engineering firms?

The United States leads with 6,650 companies, followed by Brazil (2,731) and Canada (1,062). Every conservation engineering firms list by country and city is linked on this page.

Which city has the most conservation engineering firms?

Sao Paulo leads with 296 company records, followed by Belo Horizonte (181) and Houston (132).

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 308,493 professional contacts with verified work emails tracked across these 25,552 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 10, 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.