Company lists · Data refreshed September 2026

Top 25 Hydrogeological consultants based in Rio De Janeiro, Brazil

Name: Hydrogeological consultants based in Rio De Janeiro, Brazil
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 115 companies tracked

RevenueBase identified 115 hydrogeological consultants headquartered in Rio De Janeiro, Brazil as of September 2026 and tracks 2,322 professional contacts across them, including 480 with verified work emails. Belo Horizonte is the largest hub.

This list covers hydrogeological consultants headquartered in Rio De Janeiro, Brazil, 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 21, 2026.

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 21, 2026 86% judged on-target in blind review

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 hydrogeological consultants based in Rio De Janeiro, Brazil, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to hydrogeological consultants: 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	Sondotécnica Engenharia	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 21, 2026	201-500	588 contacts →
	Indirect evidence “Sondotécnica was founded in 1954.” Source: RevenueBase Database · checked Sep 21, 2026
2	Planave S.A.	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 21, 2026	501-1,000	218 contacts →
	Indirect evidence “Empresa atua em Engenharia Consultiva, na execução de estudos, projetos e acompanhamento de obras.” Source: RevenueBase Database · checked Sep 21, 2026
3	Rpeotta	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 21, 2026	51-200	169 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 21, 2026
4	Alta Geotecnia	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 21, 2026	51-200	73 contacts →
	Indirect evidence “Desenvolvemos soluções inovadoras para o gerenciamento, prevenção e redução de riscos geoambientais de projetos, operações e descomissionamentos de grandes ativos de mineração…” Source: RevenueBase Database · checked Sep 21, 2026
5	Hidroluz	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 21, 2026	51-200	66 contacts →
	Indirect evidence “Esta página tem por objetivo mantermos um canal de comunicação com nossos clientes, parceiros e colaboradores.” Source: RevenueBase Database · checked Sep 21, 2026
6	Geoprojetos Engenharia Ltda	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 21, 2026	51-200	63 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 21, 2026
7	Geomecânica S.A	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 21, 2026	51-200	61 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 21, 2026
8	Navocean	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 21, 2026	1,001-5,000	51 contacts →
	Indirect evidence “Environmental Consulting, Licensing & Monitoring for Seismic and Drilling Activities.” Source: RevenueBase Database · checked Sep 21, 2026
9	ECP Environmental Solutions	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 21, 2026	11-50	33 contacts →
	Indirect evidence “Somos uma empresa de engenharia ambiental que presta serviços de consultoria para empreendimentos em geral, construção civil e indústrias.” Source: RevenueBase Database · checked Sep 21, 2026
10	Biodinamica Engenharia E Meio Ambiente Ltda	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 21, 2026	51-200	31 contacts →
	Indirect evidence “A BIODINÂMICA ENGENHARIA E MEIO AMBIENTE LTDA.” Source: RevenueBase Database · checked Sep 21, 2026
11	Muniz & Spada Engenheiros Consultores Ltda	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 21, 2026	11-50	22 contacts →
	Indirect evidence “Empresa de Projeto em Geotecnia, Contenção e Estabilização de Taludes, Fundações e Obras de Terra, Geotecnologia Ferroviária, Terraplenagem e Pavimentos” Source: RevenueBase Database · checked Sep 21, 2026
12	Mlaydner Saneamento	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 21, 2026	11-50	17 contacts →
	Indirect evidence “Especializados em engenharia, nossa missão é desenvolver trabalhos reconhecidamente diferenciados e inovadores através da estruturação de estudos e projetos de saneamento básico…” Source: RevenueBase Database · checked Sep 21, 2026
13	Quartic Advisory	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 21, 2026	11-50	14 contacts →
	Indirect evidence “Created in 2015 with a startup mindset, we are a team of engineers acting with the integrity and robustness of a law firm.” Source: RevenueBase Database · checked Sep 21, 2026
14	BMP Ambiental	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 21, 2026	1-10	13 contacts →
	Indirect evidence “BMP is a Brazilian company, formed in 2009, which initially offered only geotechnology services.” Source: RevenueBase Database · checked Sep 21, 2026
15	Geosea Investigações Geotécnicas	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 21, 2026	51-200	12 contacts →
	Indirect evidence “São quatro áreas de atuação: Geotecnia, Geologia, Geofísica e Mergulho Profissional.” Source: RevenueBase Database · checked Sep 21, 2026
16	Orion Engenharia Ambiental	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 21, 2026	11-50	12 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 21, 2026
17	Tecton Engenharia Ltda	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 21, 2026	11-50	9 contacts →
	Indirect evidence “FUNDADA EM 1987, A TECTON É UMA EMPRESA DE PROJETOS E CONSULTORIA EM ENGENHARIA.” Source: RevenueBase Database · checked Sep 21, 2026
18	Consig-Sa	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 21, 2026	11-50	9 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 21, 2026
19	Litologica	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 21, 2026	1-10	7 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 21, 2026
20	Geodrill Engenharia Ltda	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 21, 2026	51-200	7 contacts →
	Indirect evidence “Empresa especializada em Sondagem e ensaios geotécnicos Onshore & Nearshore Fundações com Estacas Raiz Contenção de Encostas” Source: RevenueBase Database · checked Sep 21, 2026
21	RIO Petroleo	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 21, 2026	11-50	6 contacts →
	Indirect evidence “We are a consulting company specialized in the energy industry.” Source: RevenueBase Database · checked Sep 21, 2026
22	Ecgeo Consultoria E Projetos	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 21, 2026	11-50	5 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 21, 2026
23	Groundtech Engenharia	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 21, 2026	1-10	4 contacts →
	Indirect evidence “A empresa atua em projetos e consultoria em Engenharia Civil, sobretudo em Geotecnia.” Source: RevenueBase Database · checked Sep 21, 2026
24	Cobe Engenharia E Geotecnia	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 21, 2026	1-10	4 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 21, 2026
25	Interação Ambiental	Partial evidence	Rio De Janeiro, BrazilHQ checked Sep 21, 2026	1-10	4 contacts →
	Partial evidence “Interação Ambiental provides all its experience and training in the environmental area, through technical consultancies, audits and environmental studies, aiming to be recognized…” Source: RevenueBase Database · checked Sep 21, 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: hydrogeological consultants. 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 hydrogeological consultants.
Partial evidence: Its own public description names part of hydrogeological consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name hydrogeological consultants. 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 115 hydrogeological consultants based in Rio De Janeiro, Brazil

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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)

224.3%Largest-city concentration · Belo Horizonte

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

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

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among hydrogeological consultants, 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.
What qualifies: Companies headquartered in Rio De Janeiro, Brazil whose own description of what they do matches “hydrogeological consultants”. 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 hydrogeological consultants), 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 hydrogeological consultants, and records with no verified work email. Companies headquartered outside Rio De Janeiro are excluded even when they keep an office there.
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, 480 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 21, 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.

Hydrogeological consultants by metro in Brazil

Hydrogeological consultants in Belo Horizonte258
Hydrogeological consultants in Sao Paulo254
Hydrogeological consultants in Rio De Janeiro115
Hydrogeological consultants in Curitiba75
Hydrogeological consultants in Porto Alegre58
Hydrogeological consultants in Goiania51
Hydrogeological consultants in Salvador36
Hydrogeological consultants in Campinas35
Hydrogeological consultants in Florianopolis34
Hydrogeological consultants in Fortaleza34
Hydrogeological consultants in Vitoria29
Hydrogeological consultants in Recife27
Hydrogeological consultants in Brasilia26

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

RevenueBase identified 115 hydrogeological consultants headquartered in Rio De Janeiro, Brazil 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?

Sondotécnica Engenharia, headquartered in Rio De Janeiro, tops this list with the largest team on record.

Which city has the most hydrogeological consultants?

Belo Horizonte leads with 258 headquartered companies, 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 the top results, verified emails and direct dials included. Upgrading unlocks all 480 verified decision-maker contacts tracked across these 115 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 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 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.