Company lists · Data refreshed September 2026

Top 25 Hydro engineering and consulting firms worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 33,512 companies tracked

RevenueBase identified 33,512 hydro engineering and consulting firms worldwide as of September 2026 and tracks 1,038,036 professional contacts across them, including 351,324 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers hydro engineering and consulting 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 28, 2026. Country and city lists for hydro engineering and consulting 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 28, 2026 86% judged on-target in blind review

33,512Companies

1,038,036Contacts tracked

351,324Verified emails

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The 25 largest hydro engineering and consulting firms worldwide

Ranked by team size

Top 25 of 33,512 hydro engineering and consulting firms worldwide, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to hydro engineering and consulting 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 28, 2026	10001+	63,914 contacts →
	Indirect evidence “AECOM is the global infrastructure leader, committed to delivering a better world.” Source: RevenueBase Database · checked Sep 28, 2026
2	Jacobs	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 28, 2026	10001+	46,351 contacts →
	Indirect evidence “At Jacobs, we're challenging today to reinvent tomorrow – delivering outcomes and solutions for the world's most complex challenges.” Source: RevenueBase Database · checked Sep 28, 2026
3	Stantec	Indirect evidence	Edmonton, AB, CanadaHQ checked Sep 28, 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 28, 2026
4	GHD	Indirect evidence	Sydney, AustraliaHQ checked Sep 28, 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 28, 2026
5	Tetra Tech	Partial evidence	Pasadena, CA, United StatesHQ checked Sep 28, 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 28, 2026
6	WSP In Canada	Partial evidence	Montreal, QC, CanadaHQ checked Sep 28, 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 28, 2026
7	Tata Consulting Engineers	Strong evidence	Mumbai, IndiaHQ checked Sep 28, 2026	5,001-10,000	8,440 contacts →
	Strong evidence “Tata Consulting Engineers Limited (TCE) is the largest Indian private sector engineering and project consultancy and an emerging global leader in integrated engineering solutions.” Source: RevenueBase Database · checked Sep 28, 2026
8	CDM Smith	Indirect evidence	Boston, MA, United StatesHQ checked Sep 28, 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 28, 2026
9	TRC Companies, INC	Indirect evidence	Windsor, CT, United StatesHQ checked Sep 28, 2026	5,001-10,000	7,017 contacts →
	Indirect evidence “TRC, a member of WSP, stands for adaptability.” Source: RevenueBase Database · checked Sep 28, 2026
10	Terracon	Strong evidence	Olathe, KS, United StatesHQ checked Sep 28, 2026	5,001-10,000	6,113 contacts →
	Strong evidence “Terracon is a 100 percent employee-owned consulting engineering firm providing quality services to clients.” Source: RevenueBase Database · checked Sep 28, 2026
11	Khatib & Alami	Indirect evidence	Downtown, PolandHQ checked Sep 28, 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 28, 2026
12	JAN DE NUL Group	Indirect evidence	Capellen, LuxembourgHQ checked Sep 28, 2026	5,001-10,000	5,424 contacts →
	Indirect evidence “We are World Builders shaping water, land and energy.” Source: RevenueBase Database · checked Sep 28, 2026
13	SMEC	Partial evidence	North Sydney, AustraliaHQ checked Sep 28, 2026	5,001-10,000	5,231 contacts →
	Partial evidence “SMEC is a global engineering, management and development consultancy with a 70-year history of delivering advanced solutions on a global scale across urban development…” Source: RevenueBase Database · checked Sep 28, 2026
14	RPS	Strong evidence	Abingdon, United KingdomHQ checked Sep 28, 2026	5,001-10,000	4,684 contacts →
	Strong evidence “Founded in 1970, RPS is part of Tetra Tech, a leading global provider of consulting and engineering services.” Source: RevenueBase Database · checked Sep 28, 2026
15	Artelia	Partial evidence	Saint-ouen, FranceHQ checked Sep 28, 2026	5,001-10,000	4,612 contacts →
	Partial evidence “Artelia is an international multidisciplinary consultancy, engineering and project management group specialising in mobility, water, energy, building and industry.” Source: RevenueBase Database · checked Sep 28, 2026
16	Michael Baker International	Strong evidence	Pittsburgh, PA, United StatesHQ checked Sep 28, 2026	5,001-10,000	4,362 contacts →
	Strong 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 28, 2026
17	STV	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 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 28, 2026
18	Norconsult	Partial evidence	Sandvika, NorwayHQ checked Sep 28, 2026	5,001-10,000	3,555 contacts →
	Partial evidence “Norconsult is a multidisciplinary engineering and design consultancy, providing services to clients in the public and private sectors worldwide.” Source: RevenueBase Database · checked Sep 28, 2026
19	National Engineering Services Pakistan PVT Limited Nespak	Indirect evidence	Lahore, PakistanHQ checked Sep 28, 2026	5,001-10,000	3,266 contacts →
	Indirect evidence “NESPAK is Pakistan’s premier consultancy organization (established in 1973).” Source: RevenueBase Database · checked Sep 28, 2026
20	Proing	Indirect evidence	Yumbo, ColombiaHQ checked Sep 28, 2026	1,001-5,000	3,261 contacts →
	Indirect evidence “Basados en nuestros talentos y buena actitud, desarrollamos la ingeniería para brindar un mejor presente y futuro.” Source: RevenueBase Database · checked Sep 28, 2026
21	CIMA	Indirect evidence	Laval, QC, CanadaHQ checked Sep 28, 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 28, 2026
22	Golder	Indirect evidence	Vancouver, BC, CanadaHQ checked Sep 28, 2026	5,001-10,000	3,167 contacts →
	Indirect evidence “Golder was acquired by WSP.” Source: RevenueBase Database · checked Sep 28, 2026
23	ECG Engineering Consultants Group S.A	Partial evidence	Cairo, EgyptHQ checked Sep 28, 2026	1,001-5,000	3,138 contacts →
	Partial evidence “With more than 57 years of engineering excellence, ECG is one of the leading multidisciplinary engineering consultancies in the Middle East and Africa.” Source: RevenueBase Database · checked Sep 28, 2026
24	Yapı Merkezi	Indirect evidence	TürkiyeHQ checked Sep 28, 2026	10001+	2,852 contacts →
	Indirect evidence “Yapı Merkezi, founded in 1965, aims "to create and to realize construction projects that will serve humanity by creating environments of happiness".” Source: RevenueBase Database · checked Sep 28, 2026
25	NIRAS	Indirect evidence	Allerød, DenmarkHQ checked Sep 28, 2026	1,001-5,000	2,699 contacts →
	Indirect evidence “At NIRAS, we engineer solutions for a shared future.” Source: RevenueBase Database · checked Sep 28, 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: hydro engineering and consulting 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 hydro engineering and consulting firms.
Partial evidence: Its own public description names part of hydro engineering and consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name hydro engineering and consulting 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 33,512 hydro engineering and consulting firms worldwide

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Hydro engineering and consulting firms worldwide at a glance

As of Sep 28, 2026

33.8%Verified-email coverage

31.0Average contacts per company

11-50Median size (employees)

1.0%Largest-city concentration · Sao Paulo

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

15,643

11-50

11,471

51-200

4,187

201-500

1,198

501-1,000

408

1,001-5,000

341

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 hydro engineering and consulting 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 hydro engineering and consulting firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “hydro engineering and consulting 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 hydro engineering and consulting 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 hydro engineering and consulting 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, 351,324 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 28, 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.

Hydro engineering and consulting firms by location

160 lists · largest first

Every Hydro engineering and consulting 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 hydro engineering and consulting 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 hydro engineering and consulting firms are there worldwide?

RevenueBase identified 33,512 hydro engineering and consulting 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 hydro engineering and consulting firms?

The United States leads with 6,240 companies, followed by Brazil (2,478) and India (1,658). Every hydro engineering and consulting firms list by country and city is linked on this page.

Which city has the most hydro engineering and consulting firms?

Sao Paulo leads with 341 headquartered companies, followed by Tehran (291) and Belo Horizonte (196).

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 351,324 verified decision-maker contacts tracked across these 33,512 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 28, 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.