Company lists · Data refreshed September 2026

Top 25 Hydrogeological survey companies based in Brazil

Name: Hydrogeological survey companies based in Brazil
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 435 companies tracked

RevenueBase identified 435 hydrogeological survey companies headquartered in Brazil as of September 2026 and tracks 7,143 professional contacts across them, including 1,263 with verified work emails. Belo Horizonte is the largest hub.

This list covers hydrogeological survey companies headquartered in 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 20, 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 20, 2026 86% judged on-target in blind review

435Companies

7,143Contacts tracked

1,263Verified emails

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The 25 largest hydrogeological survey companies based in Brazil

Ranked by team size

Top 25 of 435 hydrogeological survey companies based in Brazil, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to hydrogeological survey 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	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
2	Grupo Projeta	Indirect evidence	Belo Horizonte, BrazilHQ checked Sep 20, 2026	501-1,000	485 contacts →
	Indirect evidence “O Grupo Projeta é formado por empresas de engenharia consultiva, que oferece soluções completas e integradas nas áreas de engenharia civil, meio ambiente, saneamento, recursos…” Source: RevenueBase Database · checked Sep 20, 2026
3	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
4	Grupo Geominas	Indirect evidence	Parauapebas, BrazilHQ checked Sep 20, 2026	201-500	245 contacts →
	Indirect evidence “Há mais de duas décadas, o Grupo Geominas desenvolve soluções técnicas especializadas para engenharia, mineração, infraestrutura e meio ambiente.” Source: RevenueBase Database · checked Sep 20, 2026
5	Pimenta DE Ávila Consultoria	Indirect evidence	Nova Lima, BrazilHQ checked Sep 20, 2026	201-500	244 contacts →
	Indirect evidence “Since 1989, the company develops waste disposal studies to a wide range of clients embodying different kind of benefited ore, developing specific work methods according to new…” Source: RevenueBase Database · checked Sep 20, 2026
6	Walm Engenharia E Tecnologia Ambiental	Indirect evidence	São Paulo, BrazilHQ checked Sep 20, 2026	51-200	234 contacts →
	Indirect evidence “A WALM Engenharia e Tecnologia Ambiental Ltda.” Source: RevenueBase Database · checked Sep 20, 2026
7	DF Engineering	Indirect evidence	Belo Horizonte, BrazilHQ checked Sep 20, 2026	201-500	232 contacts →
	Indirect evidence “Soil and Rock Engineering Projects (Geotechnics), Geology and Water Resources.” Source: RevenueBase Database · checked Sep 20, 2026
8	Grupo Alphageos	Indirect evidence	Barueri, BrazilHQ checked Sep 20, 2026	51-200	203 contacts →
	Indirect evidence “Na sua fundação em 1985, o objetivo imediato da empresa era a execução de sondagens a percussão para subsidiar estudos e projetos de fundações, escavações, terraplenos e outras…” Source: RevenueBase Database · checked Sep 20, 2026
9	Drillgeo Geologia E Sondagens S.A	Indirect evidence	Lauro De Freitas, BrazilHQ checked Sep 20, 2026	201-500	179 contacts →
	Indirect evidence “A DrillGeo, nos seus mais de 25 anos de experiência no mercado de sondagem, sempre buscou a máxima qualidade e eficiência, trabalhando de forma sustentável e respeito ao meio…” Source: RevenueBase Database · checked Sep 20, 2026
10	Mdgeo Hidrogeologia E Meio Ambiente	Indirect evidence	Belo Horizonte, BrazilHQ checked Sep 20, 2026	51-200	147 contacts →
	Indirect evidence “São mais de 1,2 mil projetos desenvolvidos nos setores industriais, de mineração, construção civil, abastecimento e agronegócio.” Source: RevenueBase Database · checked Sep 20, 2026
11	CPEA	Indirect evidence	São Paulo, BrazilHQ checked Sep 20, 2026	51-200	137 contacts →
	Indirect evidence “CPEA - Consultoria Paulista de Estudos Ambientais is a limited liability company, founded on October 15th, with headquarter in the city of São Paulo.” Source: RevenueBase Database · checked Sep 20, 2026
12	3geo Consultoria	Indirect evidence	Niterói, BrazilHQ checked Sep 20, 2026	51-200	120 contacts →
	Indirect evidence “3Geo Consulting is a geotechnical and environmental consulting company.” Source: RevenueBase Database · checked Sep 20, 2026
13	Geoestável Consultoria E Projetos Ltda	Indirect evidence	Belo Horizonte, BrazilHQ checked Sep 20, 2026	201-500	93 contacts →
	Indirect evidence “GEOESTÁVEL CONSULTORIA E PROJETOS Com sede própria na cidade mineira de Belo Horizonte, a empresa atua em todo território nacional e internacional.” Source: RevenueBase Database · checked Sep 20, 2026
14	MPB Engenharia	Indirect evidence	Florianópolis, BrazilHQ checked Sep 20, 2026	51-200	93 contacts →
	Indirect evidence “A MPB Engenharia é uma empresa catarinense, sediada com matriz em Florianópolis e Filial com escritórios em Brasília.” Source: RevenueBase Database · checked Sep 20, 2026
15	Rhama Analysis	Indirect evidence	Porto Alegre, BrazilHQ checked Sep 20, 2026	51-200	86 contacts →
	Indirect evidence “For over 20 years, we have developed engineering solutions for the most complex environmental challenges in Brazil and around the world.” Source: RevenueBase Database · checked Sep 20, 2026
16	Water Services And Technologies	Indirect evidence	Belo Horizonte, BrazilHQ checked Sep 20, 2026	51-200	84 contacts →
	Indirect evidence “Water Services and Technologies is a company specialized in hydrogeology and environmental services, which values technical quality, safety and excellence, always seeking to…” Source: RevenueBase Database · checked Sep 20, 2026
17	Tecma-Tecnologia EM Meio Ambiente Ltda	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 20, 2026	51-200	76 contacts →
	Indirect evidence “TECMA - TECNOLOGIA EM MEIO AMBIENTE LTDA.” Source: RevenueBase Database · checked Sep 20, 2026
18	CERN	Indirect evidence	Belo Horizonte, BrazilHQ checked Sep 20, 2026	51-200	69 contacts →
	Indirect evidence “Há 36 anos no mercado, a CERN é referência na área de consultoria especializada em meio ambiente e geologia.” Source: RevenueBase Database · checked Sep 20, 2026
19	Suporte	Indirect evidence	Sao Pedro, BrazilHQ checked Sep 20, 2026	51-200	69 contacts →
	Indirect evidence “Empresa formada por engenheiros, geólogos e técnicos especializados, a Suporte Sondagens e Investigações surge como solução para construtoras, projetistas, concessionárias e…” Source: RevenueBase Database · checked Sep 20, 2026
20	PCP Engenharia	Indirect evidence	São Carlos - Sp, BrazilHQ checked Sep 20, 2026	51-200	66 contacts →
	Indirect evidence “Análise de Dados / Investigação Geofísica / RADAR Interferométrico / Monitoramento de Estruturas / Ressonância Microssísmica / Radiometria Gamma / Monitoramento Ambiental / InSAR…” Source: RevenueBase Database · checked Sep 20, 2026
21	Geoloc Engenharia E Geologia	Indirect evidence	Curitiba, BrazilHQ checked Sep 20, 2026	51-200	64 contacts →
	Indirect evidence “A GEOLOC atua a nível nacional no ramo ambiental e civil com uma sólida estrutura operacional apresentando soluções diretas e objetivas, oferecendo um corpo técnico formado por…” Source: RevenueBase Database · checked Sep 20, 2026
22	REGEA	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 20, 2026	51-200	64 contacts →
	Indirect evidence “A REGEA - Geologia, Engenharia e Estudos Ambientais, empresa de consultoria com mais de 15 anos de atuação no mercado, está capacitada para executar projetos nas áreas de…” Source: RevenueBase Database · checked Sep 20, 2026
23	Tec3 Geotecnia E Recursos Hidricos	Indirect evidence	Belo Horizonte, BrazilHQ checked Sep 20, 2026	51-200	62 contacts →
	Indirect evidence “A Tec3 é uma empresa de engenharia de projetos especializada em recursos hídricos e geotecnia aplicados aos setores de mineração, hidroenergia, óleo e gás.” Source: RevenueBase Database · checked Sep 20, 2026
24	Azurit	Indirect evidence	Belo Horizonte, BrazilHQ checked Sep 20, 2026	51-200	60 contacts →
	Indirect evidence “Realizamos estudos e elaboramos projetos nas áreas de Engenharia Hídrica; Gestão Estratégica e Institucional; Meio Ambiente e Socioeconomia.” Source: RevenueBase Database · checked Sep 20, 2026
25	Ambsolution	Indirect evidence	Santo André, BrazilHQ checked Sep 20, 2026	11-50	40 contacts →
	Indirect evidence “A Ambsolution é uma empresa de engenharia ambiental, atuante nas áreas: • Avaliação ambiental • Gestão ambiental • Abastecimento e tratamento de água, drenagem e tratamento de…” 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: hydrogeological survey 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 hydrogeological survey companies.
Partial evidence: Its own public description names part of hydrogeological survey companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name hydrogeological survey 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 435 hydrogeological survey companies based in Brazil

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Hydrogeological survey companies based in Brazil at a glance

As of Sep 20, 2026

17.7%Verified-email coverage

16.4Average contacts per company

1-10Median size (employees)

14.0%Largest-city concentration · Belo Horizonte

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

237

11-50

126

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured worldwide rather than for Brazil, so it is reported there. Company counts and contact totals on this page are exact for Brazil, over 435 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 survey 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.
What qualifies: Companies headquartered in Brazil whose own description of what they do matches “hydrogeological survey 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 hydrogeological survey 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 hydrogeological survey companies, and records with no verified work email. Companies headquartered outside Brazil 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, 1,263 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.

Hydrogeological survey companies by metro

Hydrogeological survey companies in Belo Horizonte61
Hydrogeological survey companies in Sao Paulo43

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 survey 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 hydrogeological survey companies are there based in Brazil?

RevenueBase identified 435 hydrogeological survey companies headquartered in 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 survey companies?

Belo Horizonte leads with 61 headquartered companies, followed by Sao Paulo (43) and Porto Alegre (18).

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 1,263 verified decision-maker contacts tracked across these 435 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.