Company lists · Data refreshed September 2026

Top 25 Groundwater consulting companies worldwide

Name: Groundwater consulting companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 5,495 companies tracked

RevenueBase identified 5,495 groundwater consulting companies worldwide as of September 2026 and tracks 76,086 professional contacts across them, including 25,226 with verified work emails. The United States is the largest market and Belo Horizonte the largest hub.

This list covers groundwater consulting companies 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 20, 2026. Country and city lists for groundwater consulting companies 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 20, 2026 86% judged on-target in blind review

5,495Companies

76,086Contacts tracked

25,226Verified emails

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The 25 largest groundwater consulting companies worldwide

Ranked by team size

Top 25 of 5,495 groundwater consulting companies worldwide, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to groundwater consulting companies: 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	Tetra Tech	Indirect evidence	Pasadena, CA, United StatesHQ checked Sep 20, 2026	10001+	12,999 contacts →
	Indirect 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 20, 2026
2	Brown And Caldwell	Indirect evidence	Walnut Creek, CA, United StatesHQ checked Sep 20, 2026	1,001-5,000	2,473 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 20, 2026
3	SRK Consulting	Partial evidence	Vancouver, CanadaHQ checked Sep 20, 2026	1,001-5,000	2,259 contacts →
	Partial evidence “SRK Consulting is an independent, international group providing specialised consultancy services.” Source: RevenueBase Database · checked Sep 20, 2026
4	Hazen And Sawyer	Indirect evidence	New York, NY, United StatesHQ checked Sep 20, 2026	1,001-5,000	2,100 contacts →
	Indirect evidence “As Hazen marks 75 years, we celebrate a legacy of absolute commitment to our clients while delivering the best technical work available anywhere.” Source: RevenueBase Database · checked Sep 20, 2026
5	DGE Danmark	Indirect evidence	Højbjerg, DenmarkHQ checked Sep 20, 2026	n/a	1,176 contacts →
	Indirect evidence “Miljø er vores kernekompetence og vores ansvar.” Source: RevenueBase Database · checked Sep 20, 2026
6	WSP EN Chile	Indirect evidence	Vitacura, ChileHQ checked Sep 20, 2026	10001+	988 contacts →
	Indirect evidence “WSP en una empresa líder en servicios profesionales de consultoría en recursos hídricos, ingeniería, medio ambiente y sustentabilidad.” Source: RevenueBase Database · checked Sep 20, 2026
7	BGC Engineering INC	Partial evidence	Vancouver, BC, CanadaHQ checked Sep 20, 2026	501-1,000	798 contacts →
	Partial evidence “BGC Engineering is an international consulting firm that provides professional services in applied earth sciences.” Source: RevenueBase Database · checked Sep 20, 2026
8	Sondotécnica Engenharia	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 20, 2026	201-500	588 contacts →
	Indirect evidence “Sondotécnica was founded in 1954.” Source: RevenueBase Database · checked Sep 20, 2026
9	Trihydro Corporation	Partial evidence	Laramie, WY, United StatesHQ checked Sep 20, 2026	501-1,000	577 contacts →
	Partial evidence “Headquartered in Laramie, Wyoming, Trihydro provides environmental consulting, engineering and surveying, air quality and process management, information technology, and water and…” Source: RevenueBase Database · checked Sep 20, 2026
10	Anchor QEA	Partial evidence	Seattle, WA, United StatesHQ checked Sep 20, 2026	501-1,000	479 contacts →
	Partial evidence “Headquartered in Seattle, Washington, Anchor QEA is a nationally recognized environmental science and engineering consulting firm specializing in aquatic, shoreline, and water…” Source: RevenueBase Database · checked Sep 20, 2026
11	Douglas Partners	Partial evidence	West Ryde, AustraliaHQ checked Sep 20, 2026	501-1,000	466 contacts →
	Partial evidence “Welcome to Douglas Partners Pty Ltd, a leading engineering consultancy specialising in geotechnics, rock mechanics, environment, groundwater, earthworks and geophysics.” Source: RevenueBase Database · checked Sep 20, 2026
12	Geo-Technology Associates, Inc. GTA	Indirect evidence	Abingdon, MD, United KingdomHQ checked Sep 20, 2026	501-1,000	460 contacts →
	Indirect evidence “Geo-Technology Associates, Inc.(GTA) proudly celebrates more than 40 years of service, backed by a team of 600+ professionals-including geotechnical engineers, environmental…” Source: RevenueBase Database · checked Sep 20, 2026
13	Neo2	Indirect evidence	Levallois-perret, FranceHQ checked Sep 20, 2026	501-1,000	390 contacts →
	Indirect evidence “NEO2 is an Engineering Consultancy and Resource Provider active in the Oil & Gas, Water Treatment & Desalination, and Power Generation industries.” Source: RevenueBase Database · checked Sep 20, 2026
14	CME Associates	Indirect evidence	Parlin, NJ, United StatesHQ checked Sep 20, 2026	201-500	336 contacts →
	Indirect evidence “CME Associates, with eight (8) office locations throughout New Jersey, provides a complete range of Environmental, Geotechnical, Engineering, Surveying and Planning services.” Source: RevenueBase Database · checked Sep 20, 2026
15	Froehling & Robertson, INC	Indirect evidence	Richmond, VA, United StatesHQ checked Sep 20, 2026	201-500	312 contacts →
	Indirect evidence “Established in 1881, Froehling & Robertson, Inc.” Source: RevenueBase Database · checked Sep 20, 2026
16	Forage FTE Drilling	Indirect evidence	Sherbrooke, QC, CanadaHQ checked Sep 20, 2026	201-500	304 contacts →
	Indirect evidence “FTE Drilling (Forages Technic-Eau Inc.) is one of the most specialized companies in the drilling industry.” Source: RevenueBase Database · checked Sep 20, 2026
17	CTE	Partial evidence	São Paulo, BrazilHQ checked Sep 20, 2026	51-200	288 contacts →
	Partial evidence “CTE is a consulting company, which has 28 years of experience in the Construction Industry, offering clients consultancy across a wide range of service nable Projects and Green…” Source: RevenueBase Database · checked Sep 20, 2026
18	BVP Geotecnia E Hidrotecnia	Indirect evidence	Belo Horizonte, BrazilHQ checked Sep 20, 2026	201-500	286 contacts →
	Indirect evidence “Somos a BVP Geotecnia e Hidrotecnia.” Source: RevenueBase Database · checked Sep 20, 2026
19	West Yost	Partial evidence	Davis, CA, United StatesHQ checked Sep 20, 2026	201-500	279 contacts →
	Partial evidence “West Yost is a water-focused consulting engineering firm ranked by Fortune Magazine as one of the “Best Small and Medium Workplaces in Consulting and Professional Services” 2023 -…” Source: RevenueBase Database · checked Sep 20, 2026
20	Intera Incorporated	Partial evidence	Austin, TX, United StatesHQ checked Sep 20, 2026	201-500	259 contacts →
	Partial evidence “Established in 1974, INTERA is a geosciences and engineering consulting firm focused on providing water resources and supply, environmental, mining, radioactive waste isolation…” Source: RevenueBase Database · checked Sep 20, 2026
21	Pt. Kwarsa Hexagon	Indirect evidence	Bandung, IndonesiaHQ checked Sep 20, 2026	201-500	255 contacts →
	Indirect evidence “KWARSA HEXAGON is an independent consultant company founded in the year of 1982.” Source: RevenueBase Database · checked Sep 20, 2026
22	HPC AG	Partial evidence	Harburg (schwaben), GermanyHQ checked Sep 20, 2026	501-1,000	252 contacts →
	Partial evidence “HPC has been working for people and their environment since 1948: we are specialist planners and experts in soil and groundwater, mineral and drinking water, building ground and…” Source: RevenueBase Database · checked Sep 20, 2026
23	Walm BH Engenharia	Indirect evidence	Belo Horizonte, BrazilHQ checked Sep 20, 2026	201-500	252 contacts →
	Indirect evidence “Walm BH Engenharia is a company that operates in the areas of Geotechnical Engineering, Hydrology, Hydraulics, Hydrogeology, Engineering Geology, Rock Mechanics, and Environment &…” Source: RevenueBase Database · checked Sep 20, 2026
24	Mersino Water Solutions	Indirect evidence	Auburn Hills, MI, United StatesHQ checked Sep 20, 2026	501-1,000	248 contacts →
	Indirect evidence “For 36 years, Mersino has been trusted with the most complex water management challenges in the country.” Source: RevenueBase Database · checked Sep 20, 2026
25	Cascade Environmental, LLC	Indirect evidence	Bothell, WA, United StatesHQ checked Sep 20, 2026	1,001-5,000	248 contacts →
	Indirect evidence “CASCADE is the leading provider of environmental and geotechnical drilling, site investigation and environmental remediation.” Source: RevenueBase Database · checked Sep 20, 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: groundwater consulting companies. 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 groundwater consulting companies.
Partial evidence: Its own public description names part of groundwater consulting companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name groundwater consulting companies. 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 5,495 groundwater consulting companies worldwide

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Groundwater consulting companies worldwide at a glance

As of Sep 20, 2026

33.2%Verified-email coverage

13.8Average contacts per company

1-10Median size (employees)

1.2%Largest-city concentration · Belo Horizonte

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

3,204

11-50

1,679

51-200

442

201-500

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

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among groundwater consulting companies, 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 groundwater consulting companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “groundwater consulting companies”. 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 groundwater consulting companies), 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 groundwater consulting companies, 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, 25,226 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 20, 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.

Groundwater consulting companies by location

26 lists · largest first

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

Countries

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 groundwater consulting companies, 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 groundwater consulting companies are there worldwide?

RevenueBase identified 5,495 groundwater consulting companies 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?

Tetra Tech, headquartered in Pasadena, tops this list with the largest team on record.

Which country has the most groundwater consulting companies?

The United States leads with 1,041 companies, followed by Brazil (426) and Germany (265). Every groundwater consulting companies list by country and city is linked on this page.

Which city has the most groundwater consulting companies?

Belo Horizonte leads with 64 headquartered companies, followed by Calgary (36) and Santiago (32).

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 25,226 verified decision-maker contacts tracked across these 5,495 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 20, 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.