Company lists · Data refreshed November 2026

Top 25 Groundwater engineering consultants worldwide

Name: Groundwater engineering consultants worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 9,923 companies tracked

RevenueBase identified 9,923 company matches for groundwater engineering consultants worldwide as of November 2026 and tracks 179,801 professional contacts across them, including 60,645 with verified work emails. The United States is the largest market and Tehran the largest hub.

This list covers company matches for groundwater engineering consultants 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 November 6, 2026. Country and city lists for groundwater engineering consultants 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 Nov 6, 2026 How this list was built

9,923Companies

179,801Contacts tracked

60,645Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest groundwater engineering consultants worldwide

Ranked by team size

Top 25 of 9,923 company matches for groundwater engineering consultants worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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	Tetra Tech	Exact match	Pasadena, CA, United StatesHQ recorded Nov 6, 2026	10001+	14,232 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 · Nov 6, 2026 · View company records in RevenueBase
2	Terracon	Exact match	Olathe, NE, United StatesHQ recorded Nov 6, 2026	5,001-10,000	6,576 contacts →
	Exact match “Terracon is a 100 percent employee-owned consulting engineering firm providing quality services to clients.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Keller	Exact match	London, United KingdomHQ recorded Nov 6, 2026	5,001-10,000	4,408 contacts →
	Exact match “Every day, people around the world live, work and play on ground prepared by Keller, the world's largest geotechnical specialist contractor.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	Brown And Caldwell	Exact match	Walnut Creek, CA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	2,553 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 · Nov 6, 2026 · View company records in RevenueBase
5	ECS Group Of Companies	Exact match	Chantilly, VA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	2,363 contacts →
	Exact match “ECS Group of Companies is a Chantilly, VA-based consulting engineering firm.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Hazen And Sawyer	Exact match	New York, CO, United StatesHQ recorded Nov 6, 2026	1,001-5,000	2,306 contacts →
	Exact match “As Hazen marks 75 years, we celebrate a legacy of absolute commitment to our clients while delivering the best technical work available anywhere.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	PER Aarsleff A S	Exact match	Dk-8260 Viby J, DenmarkHQ recorded Nov 6, 2026	5,001-10,000	1,837 contacts →
	Exact match “I Aarsleff-koncernen er vi drevet af ordentlighed.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Freese And Nichols	Exact match	Fort Worth, TX, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,588 contacts →
	Exact match “Freese and Nichols is a professional planning, consulting and engineering firm serving clients across the United States.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	WSP Chile Y Argentina	Exact match	Vitacura, ChileHQ recorded Nov 6, 2026	10001+	1,079 contacts →
	Exact match “WSP en una empresa líder en servicios profesionales de consultoría en recursos hídricos, ingeniería, medio ambiente y sustentabilidad.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Tonkin Taylor	Exact match	Auckland Central, New ZealandHQ recorded Nov 6, 2026	1,001-5,000	962 contacts →
	Exact match “At Tonkin + Taylor, we’re dedicated to creating and sustaining a better world together.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	M. N. Dastur & Co. P LTD	Exact match	Kolkata, IndiaHQ recorded Nov 6, 2026	1,001-5,000	941 contacts →
	Exact match “M.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	GZA Geoenvironmental, INC	Exact match	Norwood, MA, United StatesHQ recorded Nov 6, 2026	501-1,000	922 contacts →
	Exact match “Founded in 1964 as a soils and foundations specialty consultant, GZA GeoEnvironmental, Inc.(GZA) has grown into a full-service company providing its clients with highly…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Robert Bird Group	Exact match	Brisbane, AustraliaHQ recorded Nov 6, 2026	501-1,000	873 contacts →
	Exact match “Robert Bird Group (RBG), member of the Surbana Jurong Group, is a specialist structural, civil and construction engineering consultancy with over 800 employees across 12 offices…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	BGC Engineering INC	Exact match	Vancouver, BC, CanadaHQ recorded Nov 6, 2026	501-1,000	846 contacts →
	Exact match “BGC Engineering is an international consulting firm that provides professional services in applied earth sciences.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	DUDEK	Exact match	Encinitas, CA, United StatesHQ recorded Nov 6, 2026	501-1,000	829 contacts →
	Exact match “Dudek is an environmental, planning, and engineering consulting firm.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	Bg&e	Exact match	Millers Point, AustraliaHQ recorded Nov 6, 2026	501-1,000	821 contacts →
	Exact match “BG & E is a multidisciplinary engineering consultancy, recognised for innovative, award-winning designs that prioritise practicality, constructability and long-term performance.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Dorsch Holding Gmbh - ABU Dhabi	Exact match	Abu Dhabi, United Arab EmiratesHQ recorded Nov 6, 2026	501-1,000	820 contacts →
	Exact match “Dorsch Holding GmbH – Abu Dhabi is part of Dorsch Global – a global network of planning and consulting companies, headquartered in Essen, Germany.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Integral S.A. Ingenieros Consultores	Exact match	Medellín \| Bogotá \| Lima \| Miami \| Nueva Delhi, ColombiaHQ recorded Nov 6, 2026	1,001-5,000	809 contacts →
	Exact match “Over six decades offering our consultancy services locally and internationally, based on ethical principles and commitments, always through honest, socially responsible actions…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Oriental Consultants Global	Exact match	Shinjuku-ku, JapanHQ recorded Nov 6, 2026	201-500	783 contacts →
	Exact match “Oriental Consultants Global is a consulting company based in Japan that facilitates development in countries all around the world.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	Schnabel Engineering	Exact match	Glen Allen, VA, United StatesHQ recorded Nov 6, 2026	501-1,000	767 contacts →
	Exact match “Schnabel is a trusted partner in building the foundation for project success.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	Sondotécnica Engenharia	Exact match	Rio De Janeiro, BrazilHQ recorded Nov 6, 2026	201-500	696 contacts →
	Exact match “Sondotécnica was founded in 1954.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Kennedy Jenks	Exact match	San Francisco, CA, United StatesHQ recorded Nov 6, 2026	201-500	593 contacts →
	Exact match “For over 100 years, Kennedy Jenks has provided engineering and scientific solutions for innovative water and environmental projects.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Nova Engineering And Environmental, LLC	Exact match	Kennesaw, FL, United StatesHQ recorded Nov 6, 2026	501-1,000	541 contacts →
	Exact match “Established in 1996, NOVA was originally founded to provide Environmental Consulting, Geotechnical Engineering, and Construction Materials Testing and Inspection services to the…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	Geo-Technology Associates, Inc. GTA	Exact match	Abingdon, OH, United KingdomHQ recorded Nov 6, 2026	501-1,000	503 contacts →
	Exact match “Geo-Technology Associates, Inc.(GTA) proudly celebrates more than 40 years of service, backed by a team of 600+ professionals-including geotechnical engineers, environmental…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	Groupe Géotec	Exact match	Quetigny, FranceHQ recorded Nov 6, 2026	501-1,000	499 contacts →
	Exact match “Groupe Géotec, bureau d’études en ingénierie géotechnique et environnementale, créé en 1973, conseille l’ensemble des interlocuteurs de l’acte de construire : maîtres d’ouvrage…” Recorded in the RevenueBase company graph · Nov 6, 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 “groundwater engineering consultants”. 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 9,923 groundwater engineering consultants worldwide

See the full list, filter by size, metro and specialty, and access 60,645 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Groundwater engineering consultants worldwide at a glance

As of Nov 6, 2026

33.7%Verified-email coverage

18.1Average contacts per company

1-10Median size (employees)

1.0%Largest-city concentration · Tehran

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

5,016

11-50

3,348

51-200

1,047

201-500

240

501-1,000

1,001-5,000

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 groundwater engineering consultants are linked below.
What qualifies: Company records worldwide whose business descriptions match “groundwater engineering consultants” 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 60,645 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 November 6, 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.

Groundwater engineering consultants by location

49 lists · largest first

Every Groundwater engineering consultants 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 “groundwater engineering consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many groundwater engineering consultants are there worldwide?

RevenueBase identified 9,923 company matches for groundwater engineering consultants worldwide as of November 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?

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

Which country has the most groundwater engineering consultants?

The United States leads with 1,300 companies, followed by the United Kingdom (738) and Australia (574). Every groundwater engineering consultants list by country and city is linked on this page.

Which city has the most groundwater engineering consultants?

Tehran leads with 102 company records, followed by Sao Paulo (94) and London (80).

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 60,645 professional contacts with verified work emails tracked across these 9,923 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 November 6, 2026.

Ready to reach these companies? Verified emails and direct dials for all 9,923 groundwater engineering consultants worldwide. Start with a free account, no credit card.

Download this list →

Related lists

Browse the directory

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.