Company lists · Data refreshed October 2026

Top 25 Environmental engineering contractors worldwide

Name: Environmental engineering contractors worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 12, 2026 20,852 companies tracked

RevenueBase identified 20,852 company matches for environmental engineering contractors worldwide as of October 2026 and tracks 460,246 professional contacts across them, including 130,801 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for environmental engineering contractors 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 12, 2026. Country and city lists for environmental engineering contractors 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 12, 2026 How this list was built

20,852Companies

460,246Contacts tracked

130,801Verified emails

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The 25 largest environmental engineering contractors worldwide

Ranked by team size

Top 25 of 20,852 company matches for environmental engineering contractors worldwide, 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	Tata Projects	Exact match	Mumbai, IndiaHQ recorded Oct 12, 2026	1,001-5,000	13,979 contacts →
	Exact match “Tata Projects is one of the most admired Technology led Engineering, Procurement and Construction (EPC) companies in India.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
2	Tetra Tech	Exact match	Pasadena, CA, United StatesHQ recorded Oct 12, 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 12, 2026 · View company records in RevenueBase
3	CDM Smith	Exact match	Boston, MA, United StatesHQ recorded Oct 12, 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 12, 2026 · View company records in RevenueBase
4	Samsung E&a	Exact match	Gangdong-gu, South KoreaHQ recorded Oct 12, 2026	5,001-10,000	7,325 contacts →
	Exact match “SAMSUNG E&A is one of the world’s leading engineering, procurement, construction and project management (EPC & PM) companies.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
5	Terracon	Exact match	Olathe, KS, United StatesHQ recorded Oct 12, 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 12, 2026 · View company records in RevenueBase
6	JAN DE NUL Group	Exact match	Capellen, LuxembourgHQ recorded Oct 12, 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 12, 2026 · View company records in RevenueBase
7	Galfar Engineering & Contracting Saog	Exact match	Muscat, OmanHQ recorded Oct 12, 2026	10001+	4,138 contacts →
	Exact match “Galfar Engineering & Contracting SAOG is one of the largest, multi-disciplined engineering, contracting and construction company in the Sultanate of Oman.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
8	ION Exchange India LTD	Exact match	Mumbai, IndiaHQ recorded Oct 12, 2026	1,001-5,000	3,859 contacts →
	Exact match “At Ion Exchange India, we bring you total environment solutions - water treatment, liquid waste treatment & recycle, air pollution control, solid & hazardous waste management and…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
9	EXYTE	Exact match	Stuttgart, GermanyHQ recorded Oct 12, 2026	10001+	3,837 contacts →
	Exact match “As an engineering, procurement, and construction (EPC) company, we design and deliver high-tech facilities for our clients.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
10	Golder	Exact match	Vancouver, BC, CanadaHQ recorded Oct 12, 2026	5,001-10,000	3,241 contacts →
	Exact match “Golder was acquired by WSP.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
11	APTIM	Exact match	Baton Rouge, LA, United StatesHQ recorded Oct 12, 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 12, 2026 · View company records in RevenueBase
12	Heisco	Exact match	KuwaitHQ recorded Oct 12, 2026	10001+	2,681 contacts →
	Exact match “Heavy Engineering Industries & Shipbuilding Co.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
13	Geosyntec Consultants	Exact match	Boca Raton, FL, United StatesHQ recorded Oct 12, 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 12, 2026 · View company records in RevenueBase
14	Brown And Caldwell	Exact match	Walnut Creek, CA, United StatesHQ recorded Oct 12, 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 12, 2026 · View company records in RevenueBase
15	Langan Engineering & Environmental Services	Exact match	Parsippany, NJ, United StatesHQ recorded Oct 12, 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 12, 2026 · View company records in RevenueBase
16	Providence	Exact match	Baton Rouge, LA, United StatesHQ recorded Oct 12, 2026	n/a	2,256 contacts →
	Exact match “Providence is an employee-owned engineering and environmental consulting firm.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
17	Civil & Environmental Consultants, INC	Exact match	Moon Township, PA, United StatesHQ recorded Oct 12, 2026	1,001-5,000	2,204 contacts →
	Exact match “Civil & Environmental Consultants, Inc.(CEC) provides comprehensive market-oriented consulting services that advance the strategic business objectives of its clients.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
18	CTCI	Exact match	Taipei City, TaiwanHQ recorded Oct 12, 2026	5,001-10,000	2,161 contacts →
	Exact match “CTCI (TWSE: 9933, TPEx: 5209, TPEx: 6803) is a global engineering, procurement, and construction (EPC) services provider.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
19	Carollo Engineers	Exact match	Walnut Creek, CA, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,811 contacts →
	Exact match “For more than 90 years, Carollo Engineers has been dedicated exclusively to water and wastewater solutions.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
20	Bowman Consulting	Exact match	Reston, VA, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,778 contacts →
	Exact match “Headquartered in Reston, Virginia, Bowman is a national engineering services firm delivering infrastructure solutions to customers who own, develop and maintain the built…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
21	Binladin Contracting Group	Exact match	Dubai, United Arab EmiratesHQ recorded Oct 12, 2026	5,001-10,000	1,680 contacts →
	Exact match “Binladin Contracting Group (BCG) is a UAE based construction company that serves Public and Semi-Governmental Sectors since 1967.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
22	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
23	UES	Exact match	Orlando, FL, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,643 contacts →
	Exact match “UES provides professional engineering, environmental, testing and inspection services to clients across the United States.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
24	Weston Solutions, INC	Exact match	West Chester, PA, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,525 contacts →
	Exact match “Weston Solutions, Inc.(Weston) is a 100% employee-owned environmental and infrastructure services firm committed to safety and providing measurable client value.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
25	Partner Engineering & Science, INC	Exact match	Torrance, CA, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,418 contacts →
	Exact match “Partner Assessment Corp.” 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 engineering contractors”. 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 20,852 environmental engineering contractors worldwide

See the full list, filter by size, metro and specialty, and access 130,801 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Environmental engineering contractors worldwide at a glance

As of Oct 12, 2026

28.4%Verified-email coverage

22.1Average contacts per company

11-50Median size (employees)

1.3%Largest-city concentration · Sao Paulo

Oct 12, 2026Page data refreshed

Companies by employee count

1-10

9,828

11-50

7,038

51-200

2,618

201-500

719

501-1,000

269

1,001-5,000

209

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 environmental engineering contractors are linked below.
What qualifies: Company records worldwide whose business descriptions match “environmental engineering contractors” 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 130,801 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 engineering contractors by location

98 lists · largest first

Every Environmental engineering contractors 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 “environmental engineering contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many environmental engineering contractors are there worldwide?

RevenueBase identified 20,852 company matches for environmental engineering contractors 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?

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

Which country has the most environmental engineering contractors?

The United States leads with 4,775 companies, followed by Brazil (2,331) and India (1,025). Every environmental engineering contractors list by country and city is linked on this page.

Which city has the most environmental engineering contractors?

Sao Paulo leads with 264 company records, followed by Belo Horizonte (123) and Tehran (117).

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 130,801 professional contacts with verified work emails tracked across these 20,852 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.