Company lists · Data refreshed November 2026

Top 25 Groundwater assessment consultants worldwide

RevenueBase identified 896 company matches for groundwater assessment consultants worldwide as of November 2026 and tracks 6,874 professional contacts across them, including 2,563 with verified work emails. The United States is the largest market and Ankara the largest hub.

This list covers company matches for groundwater assessment 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 assessment 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
896Companies
6,874Contacts tracked
2,563Verified emails
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The 25 largest groundwater assessment consultants worldwide

Ranked by team size
Top 25 of 896 company matches for groundwater assessment 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchWest Ryde, AustraliaHQ recorded Nov 6, 2026501-1,000491 contacts →

Exact match

“Welcome to Douglas Partners Pty Ltd, a leading engineering consultancy specialising in geotechnics, rock mechanics, environment, groundwater, earthworks and geophysics.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchBelo Horizonte, BrazilHQ recorded Nov 6, 202651-200165 contacts →

Exact match

“São mais de 1,2 mil projetos desenvolvidos nos setores industriais, de mineração, construção civil, abastecimento e agronegócio.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchDubai, United Arab EmiratesHQ recorded Nov 6, 2026201-500126 contacts →

Exact match

“Part of WJ Group, WJ Middle East leads the field in design, installation, and maintenance of dewatering systems for construction sites.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchCalgary, BC, CanadaHQ recorded Nov 6, 202651-200118 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchBelo Horizonte, BrazilHQ recorded Nov 6, 202651-200117 contacts →

Exact match

“Water Services and Technologies is a company specialized in hydrogeology and environmental services, which values technical quality, safety and excellence, always seeking to…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchSpring Hill, United StatesHQ recorded Nov 6, 202651-20099 contacts →

Exact match

“Red Earth Engineering, now Geosyntec Consultants, was established in 2009 and has spent more than 15 years working on tailings storage facilities, dams, and geotechnical projects…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchHaren, GermanyHQ recorded Nov 6, 2026501-1,00097 contacts →

Exact match

“Water has been our passion for more than 60 years.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchSugar Land, TX, United StatesHQ recorded Nov 6, 2026201-50094 contacts →

Exact match

“Hydro Resources specializes in providing the complete solution in the development and maintenance of your groundwater project.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchGildehaus, GermanyHQ recorded Nov 6, 202651-20093 contacts →

Exact match

“Wij zorgen voor droge voeten!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchDavis, CA, United StatesHQ recorded Nov 6, 202651-20081 contacts →

Exact match

“Larry Walker Associates (LWA) is a privately owned firm headquartered in Davis, California, with offices in Berkeley, Yreka, Santa Monica, Ventura, San Diego, and Seattle, WA.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchSantiago, ChileHQ recorded Nov 6, 202651-20080 contacts →

Exact match

“Somos consultores en Ciencias de la Tierra, especialistas en recursos hídricos y minerales en fase acuosa.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchTolbert, NetherlandsHQ recorded Nov 6, 202651-20075 contacts →

Exact match

“Wiertsema & Partners is al ruim 46 jaar expert in het uitvoeren en leveren van geo- en milieutechnisch onderzoek, monitoring en advies.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchSantiago, ChileHQ recorded Nov 6, 202611-5072 contacts →

Exact match

“ICASS es una empresa que entrega los servicios de consultoría e ingeniería en aguas superficiales y subterráneas, tanto en la evaluación del recurso hídrico como en la gestión del…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchPortland, OR, United StatesHQ recorded Nov 6, 202651-20070 contacts →

Exact match

“GSI Water Solutions, Inc, is a specialized groundwater, environmental, and water resources consulting firm.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchKings Langley, United KingdomHQ recorded Nov 6, 202651-20065 contacts →

Exact match

“Part of the WJ Group, WJ UK offer a complete groundwater control and management service, which encompasses design, installation and maintenance programmes to businesses throughout…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchSan Jose, WA, United StatesHQ recorded Nov 6, 202651-20062 contacts →

Exact match

“Blaine Tech Services performs environmental sampling and related field services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchLas Condes, ChileHQ recorded Nov 6, 202651-20054 contacts →

Exact match

“AguaEx Geociencias is a specialist solution provider in the areas of geology, geochemistry, geophysics and hydraulic testing.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchAlbion, AustraliaHQ recorded Nov 6, 202651-20053 contacts →

Exact match

“At Butler Partners, we specialise in providing high quality, practical, face-to-face and cost-effective design advice to our clients.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchPretoria, South AfricaHQ recorded Nov 6, 202611-5051 contacts →

Exact match

“Since our inception, GPT has focused on delivering tailor-made environmental services, that go beyond the requirements.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchBowen Hills, AustraliaHQ recorded Nov 6, 202611-5049 contacts →

Exact match

“We are Australia’s specialist groundwater consultancy.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchRockville, ON, United StatesHQ recorded Nov 6, 202651-20049 contacts →

Exact match

“S.S.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchBogota, ColombiaHQ recorded Nov 6, 202611-5047 contacts →

Exact match

“En HIDROGEOCOL S.A.S.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchWesterville, OH, United StatesHQ recorded Nov 6, 202611-5044 contacts →

Exact match

“The National Ground Water Association is the hallmark organization for anyone affiliated with the groundwater industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchLima, PeruHQ recorded Nov 6, 202611-5044 contacts →

Exact match

“FloSolutions is an innovative hydrogeological consulting firm based in Peru and USA servicing the mining, water resources, energy and agricultural sectors.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchScottsdale, AZ, United StatesHQ recorded Nov 6, 202611-5043 contacts →

Exact match

“Clear Creek Associates, a hydrogeological consulting company, was started in September to provide a very high level of expertise in groundwater science.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 896 groundwater assessment consultants worldwide

See the full list, filter by size, metro and specialty, and access 2,563 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Groundwater assessment consultants worldwide at a glance

As of Nov 6, 2026
37.3%Verified-email coverage
7.7Average contacts per company
1-10Median size (employees)
1.0%Largest-city concentration · Ankara
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
582
11-50
247
51-200
50
201-500
7
501-1,000
2

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 assessment consultants are linked below.
What qualifies
Company records worldwide whose business descriptions match “groundwater assessment 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 2,563 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 assessment consultants by location

6 lists · largest first

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

How many groundwater assessment consultants are there worldwide?

RevenueBase identified 896 company matches for groundwater assessment 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?

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

Which country has the most groundwater assessment consultants?

The United States leads with 143 companies, followed by Germany (65) and the United Kingdom (64). Every groundwater assessment consultants list by country and city is linked on this page.

Which city has the most groundwater assessment consultants?

Ankara leads with 9 company records, followed by Berlin (8) and Nairobi (6).

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 2,563 professional contacts with verified work emails tracked across these 896 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.

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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.