Company lists · Data refreshed September 2026

Top 25 Aquatic engineering firms worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 17,143 companies tracked

RevenueBase identified 17,143 aquatic engineering firms worldwide as of September 2026 and tracks 851,049 professional contacts across them, including 275,758 with verified work emails. The United States is the largest market and Tehran the largest hub.

This list covers aquatic engineering firms worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 30, 2026. Country and city lists for aquatic engineering firms follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 30, 2026 86% judged on-target in blind review

17,143Companies

851,049Contacts tracked

275,758Verified emails

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The 25 largest aquatic engineering firms worldwide

Ranked by team size

Top 25 of 17,143 aquatic engineering firms worldwide, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to aquatic engineering firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	AECOM	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 30, 2026	10001+	63,914 contacts →
	Indirect evidence “AECOM is the global infrastructure leader, committed to delivering a better world.” Source: RevenueBase Database · checked Sep 30, 2026
2	Stantec	Indirect evidence	Edmonton, AB, CanadaHQ checked Sep 30, 2026	10001+	28,416 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 30, 2026
3	Bechtel Corporation	Partial evidence	Reston, VA, United StatesHQ checked Sep 30, 2026	10001+	25,068 contacts →
	Partial evidence “Bechtel is a trusted engineering, construction and project management partner to industry and government.” Source: RevenueBase Database · checked Sep 30, 2026
4	Kiewit	Indirect evidence	Omaha, NE, United StatesHQ checked Sep 30, 2026	10001+	19,465 contacts →
	Indirect evidence “At Kiewit, the projects we deliver make a difference, and we offer opportunities for you to make one, too.” Source: RevenueBase Database · checked Sep 30, 2026
5	GHD	Indirect evidence	Sydney, AustraliaHQ checked Sep 30, 2026	10001+	14,572 contacts →
	Indirect evidence “We are committed to addressing the world’s biggest challenges in the areas of water, energy and communities.” Source: RevenueBase Database · checked Sep 30, 2026
6	Tetra Tech	Partial evidence	Pasadena, CA, United StatesHQ checked Sep 30, 2026	10001+	12,999 contacts →
	Partial evidence “Tetra Tech is the leader in water, environment and sustainable infrastructure, providing high-end technical and engineering services for projects worldwide.” Source: RevenueBase Database · checked Sep 30, 2026
7	Black & Veatch	Indirect evidence	Overland Park, KS, United StatesHQ checked Sep 30, 2026	10001+	10,851 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026
8	WSP In Canada	Partial evidence	Montreal, QC, CanadaHQ checked Sep 30, 2026	10001+	10,015 contacts →
	Partial evidence “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.” Source: RevenueBase Database · checked Sep 30, 2026
9	Ch2m	Indirect evidence	Englewood, CO, United StatesHQ checked Sep 30, 2026	10001+	8,088 contacts →
	Indirect evidence “CH2M is now Jacobs.” Source: RevenueBase Database · checked Sep 30, 2026
10	URS Corporation, An Aecom Company	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 30, 2026	10001+	7,706 contacts →
	Indirect evidence “URS Corporation operations are now affiliated with AECOM.” Source: RevenueBase Database · checked Sep 30, 2026
11	CDM Smith	Indirect evidence	Boston, MA, United StatesHQ checked Sep 30, 2026	5,001-10,000	7,527 contacts →
	Indirect evidence “CDM Smith is shaping what’s next, now, with world class solutions in water, environment, transportation and energy to public and private clients worldwide.” Source: RevenueBase Database · checked Sep 30, 2026
12	HNTB	Indirect evidence	Kansas City, MO, United StatesHQ checked Sep 30, 2026	5,001-10,000	7,469 contacts →
	Indirect evidence “For over a century, HNTB has shaped the built environment with distinctive expertise across a full spectrum of infrastructure solutions.” Source: RevenueBase Database · checked Sep 30, 2026
13	Afcons Infrastructure Limited	Partial evidence	Veera Desai Road, IndiaHQ checked Sep 30, 2026	1,001-5,000	6,807 contacts →
	Partial evidence “Afcons is flagship infrastructure engineering & construction company of the Shapoorji Pallonji Group.” Source: RevenueBase Database · checked Sep 30, 2026
14	Terracon	Partial evidence	Olathe, KS, United StatesHQ checked Sep 30, 2026	5,001-10,000	6,113 contacts →
	Partial evidence “Terracon is a 100 percent employee-owned consulting engineering firm providing quality services to clients.” Source: RevenueBase Database · checked Sep 30, 2026
15	Webuild	Indirect evidence	Rozzano (mi), ItalyHQ checked Sep 30, 2026	10001+	5,966 contacts →
	Indirect evidence “Webuild is a global leader in the construction of large, complex infrastructure, with a focus on sustainable mobility, hydropower, water treatment and supply, and green buildings.” Source: RevenueBase Database · checked Sep 30, 2026
16	Khatib & Alami	Indirect evidence	Downtown, PolandHQ checked Sep 30, 2026	5,001-10,000	5,792 contacts →
	Indirect evidence “Khatib & Alami (K&A) is a multidisciplinary design consultancy which operates primarily across the Middle East & Africa, Levant, Central and South-East Asia, and Europe.” Source: RevenueBase Database · checked Sep 30, 2026
17	JAN DE NUL Group	Indirect evidence	Capellen, LuxembourgHQ checked Sep 30, 2026	5,001-10,000	5,424 contacts →
	Indirect evidence “We are World Builders shaping water, land and energy.” Source: RevenueBase Database · checked Sep 30, 2026
18	Daewoo Engineering & Construction Co.,ltd	Indirect evidence	Seoul, South KoreaHQ checked Sep 30, 2026	5,001-10,000	4,645 contacts →
	Indirect evidence “Daewoo E&C has been enriching people’s lives ever since its establishment in 1973.” Source: RevenueBase Database · checked Sep 30, 2026
19	Michael Baker International	Partial evidence	Pittsburgh, PA, United StatesHQ checked Sep 30, 2026	5,001-10,000	4,362 contacts →
	Partial evidence “Michael Baker International is a leading provider of engineering, consulting, and technology services spanning four Verticals: Infrastructure, Places and Facilities, Federal and…” Source: RevenueBase Database · checked Sep 30, 2026
20	The Walsh Group	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 30, 2026	5,001-10,000	4,161 contacts →
	Indirect evidence “The Walsh Group is a 127-year-old company providing design, build, finance, operation and activation services.” Source: RevenueBase Database · checked Sep 30, 2026
21	China Harbour Engineering Co. LTD	Partial evidence	Beijing, ChinaHQ checked Sep 30, 2026	5,001-10,000	3,835 contacts →
	Partial evidence “CHEC is focused on basic infrastructure construction, such as Marine Engineering, Dredging and Reclamation, Road and Bridge, Railways, Airports, Complete Plant, and other works.” Source: RevenueBase Database · checked Sep 30, 2026
22	Costain Group PLC	Indirect evidence	London, United KingdomHQ checked Sep 30, 2026	1,001-5,000	3,785 contacts →
	Indirect evidence “Costain helps to improve people’s lives by creating connected, sustainable infrastructure that enables people and the planet thrive.” Source: RevenueBase Database · checked Sep 30, 2026
23	ICA Ingenieros Civiles Asociados	Indirect evidence	MexicoHQ checked Sep 30, 2026	10001+	3,752 contacts →
	Indirect evidence “Somos una empresa mexicana con 68 años de experiencia en brindar soluciones integrales a retos complejos de infraestructura.” Source: RevenueBase Database · checked Sep 30, 2026
24	STV	Indirect evidence	New York, NY, United StatesHQ checked Sep 30, 2026	1,001-5,000	3,556 contacts →
	Indirect evidence “STV offers professional services for the infrastructure that powers our lives.” Source: RevenueBase Database · checked Sep 30, 2026
25	CIMA	Indirect evidence	Laval, QC, CanadaHQ checked Sep 30, 2026	1,001-5,000	3,252 contacts →
	Indirect evidence “CIMA+ fournit une gamme complète de services de génie-conseil partout au Canada.” Source: RevenueBase Database · checked Sep 30, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: aquatic engineering firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names aquatic engineering firms.
Partial evidence: Its own public description names part of aquatic engineering firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name aquatic engineering firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 17,143 aquatic engineering firms worldwide

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Aquatic engineering firms worldwide at a glance

As of Sep 30, 2026

32.4%Verified-email coverage

49.6Average contacts per company

11-50Median size (employees)

0.9%Largest-city concentration · Tehran

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

7,037

11-50

5,739

51-200

2,594

201-500

878

501-1,000

356

1,001-5,000

329

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among aquatic engineering firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for aquatic engineering firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “aquatic engineering firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names aquatic engineering firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among aquatic engineering firms, and records with no verified work email.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 275,758 across the full list. 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 September 30, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Aquatic engineering firms by location

86 lists · largest first

Every Aquatic 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 Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names aquatic engineering firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many aquatic engineering firms are there worldwide?

RevenueBase identified 17,143 aquatic engineering firms worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

AECOM, headquartered in Dallas, tops this list with the largest team on record.

Which country has the most aquatic engineering firms?

The United States leads with 4,067 companies, followed by Brazil (925) and India (753). Every aquatic engineering firms list by country and city is linked on this page.

Which city has the most aquatic engineering firms?

Tehran leads with 153 headquartered companies, followed by Sao Paulo (127) and Houston (109).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 275,758 verified decision-maker contacts tracked across these 17,143 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 30, 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 Smart Search, 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.