Company lists · Data refreshed September 2026

Top 25 Hydrogeological consultants based in Rio De Janeiro, Brazil

RevenueBase identified 115 company matches for hydrogeological consultants associated with Rio De Janeiro, Brazil as of September 2026 and tracks 2,322 professional contacts across them, including 480 with verified work emails. Across Brazil, Belo Horizonte is the largest hub for this category (258 companies); Rio De Janeiro has 115.

This list covers company matches for hydrogeological consultants associated with Rio De Janeiro, Brazil, 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 September 21, 2026.

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 Sep 21, 2026 How this list was built
115Companies
2,322Contacts tracked
480Verified emails
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The 25 largest hydrogeological consultants based in Rio De Janeiro, Brazil

Ranked by team size
Top 25 of 115 company matches for hydrogeological consultants based in Rio De Janeiro, Brazil, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 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 matchRio De Janeiro, BrazilHQ recorded Sep 21, 2026201-500588 contacts →

Exact match

“Sondotécnica was founded in 1954.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2Exact matchRio De Janeiro, BrazilHQ recorded Sep 21, 2026501-1,000218 contacts →

Exact match

“Empresa atua em Engenharia Consultiva, na execução de estudos, projetos e acompanhamento de obras.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3Exact matchRio De Janeiro, BrazilHQ recorded Sep 21, 202651-200169 contacts →

Exact match

“A RPEOTTA tem por objetivo a prestação de serviços pautados no compromisso com a excelência em engenharia consultiva em Projetos (Conceitual, Básica e Detalhada), estudo e…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4Exact matchRio De Janeiro, BrazilHQ recorded Sep 21, 202651-20073 contacts →

Exact match

“Desenvolvemos soluções inovadoras para o gerenciamento, prevenção e redução de riscos geoambientais de projetos, operações e descomissionamentos de grandes ativos de mineração…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5Exact matchRio De Janeiro, BrazilHQ recorded Sep 21, 202651-20066 contacts →

Exact match

“Esta página tem por objetivo mantermos um canal de comunicação com nossos clientes, parceiros e colaboradores.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
6Exact matchRio De Janeiro, BrazilHQ recorded Sep 21, 202651-20063 contacts →

Exact match

“A Geoprojetos é uma empresa especializada em Geotecnia que tem sua história construída ao longo quase 40 anos de experiência onde tem acumulado um vasto acervo técnico com a…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7Exact matchRio De Janeiro, BrazilHQ recorded Sep 21, 202651-20061 contacts →

Exact match

“Com mais de 50 anos de experiência no mercado, a Geomecânica consolidou-se como referência em engenharia civil e geotecnia, oferecendo soluções integradas para projetos de…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8Exact matchRio De Janeiro, BrazilHQ recorded Sep 21, 20261,001-5,00051 contacts →

Exact match

“Environmental Consulting, Licensing & Monitoring for Seismic and Drilling Activities.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9Exact matchRio De Janeiro, BrazilHQ recorded Sep 21, 202611-5033 contacts →

Exact match

“Somos uma empresa de engenharia ambiental que presta serviços de consultoria para empreendimentos em geral, construção civil e indústrias.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10Exact matchRio De Janeiro, BrazilHQ recorded Sep 21, 202651-20031 contacts →

Exact match

“A BIODINÂMICA ENGENHARIA E MEIO AMBIENTE LTDA.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11Exact matchRio De Janeiro, BrazilHQ recorded Sep 21, 202611-5022 contacts →

Exact match

“Empresa de Projeto em Geotecnia, Contenção e Estabilização de Taludes, Fundações e Obras de Terra, Geotecnologia Ferroviária, Terraplenagem e Pavimentos”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12Exact matchRio De Janeiro, BrazilHQ recorded Sep 21, 202611-5017 contacts →

Exact match

“Especializados em engenharia, nossa missão é desenvolver trabalhos reconhecidamente diferenciados e inovadores através da estruturação de estudos e projetos de saneamento básico…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13Exact matchRio De Janeiro, BrazilHQ recorded Sep 21, 202611-5014 contacts →

Exact match

“Created in 2015 with a startup mindset, we are a team of engineers acting with the integrity and robustness of a law firm.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14Exact matchRio De Janeiro, BrazilHQ recorded Sep 21, 20261-1013 contacts →

Exact match

“BMP is a Brazilian company, formed in 2009, which initially offered only geotechnology services.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15Exact matchRio De Janeiro, BrazilHQ recorded Sep 21, 202651-20012 contacts →

Exact match

“São quatro áreas de atuação: Geotecnia, Geologia, Geofísica e Mergulho Profissional.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16Exact matchRio De Janeiro, BrazilHQ recorded Sep 21, 202611-5012 contacts →

Exact match

“A Orion Engenharia Ambiental é uma empresa capaz de executar escopos de serviços nas áreas de Consultoria e Engenharia Ambiental, estruturada com base nos conceitos de…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17Exact matchRio De Janeiro, BrazilHQ recorded Sep 21, 202611-509 contacts →

Exact match

“FUNDADA EM 1987, A TECTON É UMA EMPRESA DE PROJETOS E CONSULTORIA EM ENGENHARIA.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18Exact matchRio De Janeiro, BrazilHQ recorded Sep 21, 202611-509 contacts →

Exact match

“A ConSIG Soluções Ambientais é uma empresa de consultoria que oferece soluções inovadoras, criativas e práticas através de geotecnologias com alto valor agregado e baixo custo de…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19Exact matchRio De Janeiro, BrazilHQ recorded Sep 21, 20261-107 contacts →

Exact match

“Empresa com sede na cidade do Rio de Janeiro, especializada em elaboração de relatórios técnicos para obtenção de licenças ambientais, direito ao uso da água, operação de obras e…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20Exact matchRio De Janeiro, BrazilHQ recorded Sep 21, 202651-2007 contacts →

Exact match

“Empresa especializada em Sondagem e ensaios geotécnicos Onshore & Nearshore Fundações com Estacas Raiz Contenção de Encostas”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21Exact matchRio De Janeiro, BrazilHQ recorded Sep 21, 202611-506 contacts →

Exact match

“We are a consulting company specialized in the energy industry.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22Exact matchRio De Janeiro, BrazilHQ recorded Sep 21, 202611-505 contacts →

Exact match

“Fundada em 2010 por Eduardo Cabral, um renomado especialista em Fundações e Geotecnia, a ECGEO é um empreendimento moldado por quase duas décadas de expertise e dedicação.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23Exact matchRio De Janeiro, BrazilHQ recorded Sep 21, 20261-104 contacts →

Exact match

“A empresa atua em projetos e consultoria em Engenharia Civil, sobretudo em Geotecnia.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24Exact matchRio De Janeiro, BrazilHQ recorded Sep 21, 20261-104 contacts →

Exact match

“O nome COBE representa as iniciais dos sobrenomes de seus fundadores (CO de Coelho e BE de Bertin), dois profissionais do ramo da geotecnia com visões, ideais e experiências…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25Exact matchRio De Janeiro, BrazilHQ recorded Sep 21, 20261-104 contacts →

Exact match

“Interação Ambiental provides all its experience and training in the environmental area, through technical consultancies, audits and environmental studies, aiming to be recognized…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase

Showing 25 of 115 hydrogeological consultants based in Rio De Janeiro, Brazil

See the full list, filter by size, metro and specialty, and access 480 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Hydrogeological consultants based in Rio De Janeiro, Brazil at a glance

As of Sep 21, 2026
20.7%Verified-email coverage
20.2Average contacts per company
1-10Median size (employees)
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
60
11-50
31
51-200
19
201-500
3
501-1,000
1
1,001-5,000
1

Email recency for this list is measured across the whole Brazil list rather than for Rio De Janeiro, so it is reported there. Company counts and contact totals on this page are exact for Rio De Janeiro, over 115 companies.

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.
What qualifies
Company records associated with Rio De Janeiro, Brazil whose business descriptions match “hydrogeological 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 480 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 September 21, 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.

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

How many hydrogeological consultants are there based in Rio De Janeiro, Brazil?

RevenueBase identified 115 company matches for hydrogeological consultants associated with Rio De Janeiro, Brazil as of September 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?

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

Which city in Brazil has the most hydrogeological consultants?

Belo Horizonte leads Brazil with 258 company records, followed by Sao Paulo (254) and Rio De Janeiro (115).

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 480 professional contacts with verified work emails tracked across these 115 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 September 21, 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.