Company lists · Data refreshed September 2026

Top 25 Hydrogeological consulting firms based in France

Name: Hydrogeological consulting firms based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 3, 2026 575 companies tracked

RevenueBase identified 575 hydrogeological consulting firms headquartered in France as of September 2026 and tracks 8,307 professional contacts across them, including 3,231 with verified work emails and 117 with mobile numbers. Paris is the largest hub.

This list covers hydrogeological consulting firms headquartered in France, 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, how directly it supports the match, and when it was last checked. Data refreshed September 3, 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 HQ checked on every row Match evidence on every row Refreshed Sep 3, 2026 86% judged on-target in blind review

575Companies

8,307Contacts tracked

3,231Verified emails

117Mobile numbers

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The 25 largest hydrogeological consulting firms based in France

Ranked by team size

Top 25 of 575 hydrogeological consulting firms based in France, ranked by team size, largest first. Data refreshed Sep 3, 2026. Evidence rates how directly each company's own description names hydrogeological consulting firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	Antea Group - FranceIndirect evidence	Olivet, FranceHQ checked Sep 3, 2026	1,001-5,000	773
	“Antea Group est une société internationale d’ingénierie et de conseil en environnement.” Source: company website · checked Sep 3, 2026
2	Groupe GéotecIndirect evidence	Quetigny, FranceHQ checked Sep 3, 2026	501-1,000	445
	“Groupe Géotec, bureau d’études en ingénierie géotechnique et environnementale, créé en 1973, conseille l’ensemble des interlocuteurs de l’acte de construire : maîtres d’ouvrage…” Source: company website · checked Sep 3, 2026
3	Neo2Indirect evidence	Levallois-perret, FranceHQ checked Sep 3, 2026	501-1,000	382
	“NEO2 is an Engineering Consultancy and Resource Provider active in the Oil & Gas, Water Treatment & Desalination, and Power Generation industries.” Source: company website · checked Sep 3, 2026
4	ECR EnvironnementIndirect evidence	Larmor Plage, FranceHQ checked Sep 3, 2026	201-500	377
	“ECR Environnement est un bureau d’études et de conseils en ingénierie des sols, pluridisciplinaire et indépendant qui accompagne depuis les particuliers et professionnels dans…” Source: company website · checked Sep 3, 2026
5	AltereoIndirect evidence	Venelles, FranceHQ checked Sep 3, 2026	51-200	222
	“Awakening Environmental Smartness.” Source: company website · checked Sep 3, 2026
6	Setec Énergie EnvironnementIndirect evidence	Paris, FranceHQ checked Sep 3, 2026	51-200	141
	“Setec énergie environnement is a subsidiary of the setec group, one of France’s leading engineering firms (3 300 employees).” Source: company website · checked Sep 3, 2026
7	Geotechnique SASIndirect evidence	Avignon, FranceHQ checked Sep 3, 2026	51-200	134
	“GEOTECHNIQUE SAS - Sciences de la Terre est un bureau d'études en ingénierie géotechnique qui apporte son savoir-faire à l'ensemble des protagonistes intervenant dans un projet de…” Source: company website · checked Sep 3, 2026
8	ArtifexIndirect evidence	Albi, FranceHQ checked Sep 3, 2026	51-200	124
	“ARTIFEX, une société de SOCOTEC est un bureau d’ingénierie et de conseil en environnement, créé en janvier 1983 et basé à Albi dans le Tarn.” Source: company website · checked Sep 3, 2026
9	Soler IDEIndirect evidence	Massy, FranceHQ checked Sep 3, 2026	51-200	115
	“SOLER IDE est l’un des leaders français du Conseil en Environnement.” Source: company website · checked Sep 3, 2026
10	SemofiIndirect evidence	Villeneuve-le-roi, FranceHQ checked Sep 3, 2026	51-200	114
	“Filiale du Groupe SEMOFI, acteur majeur des filières géotechnique et SSP, SEMOFI est un bureau d’études dont la vocation est d’accompagner les collectivités territoriales…” Source: company website · checked Sep 3, 2026
11	PCM IngenierieIndirect evidence	Saint-Mande, FranceHQ checked Sep 3, 2026	51-200	95
	“PCM ingénierie est un groupe de BET pluridisciplinaires regroupés au sein de 7 sociétés : PCM GEODATA : Constitué de SECTEUR créé en 1992, intégré à PCM en 2013 et GEOVIVIER créé…” Source: company website · checked Sep 3, 2026
12	Ingetec IngénierieIndirect evidence	Paris, FranceHQ checked Sep 3, 2026	11-50	90
	“Parce que le développement durable des territoires sur lesquels nous opérons est notre raison d’être, les experts d’Ingetec s’investissent chaque jour pour l’environnement…” Source: company website · checked Sep 3, 2026
13	AquabioIndirect evidence	Saint-germain Du Puch, FranceHQ checked Sep 3, 2026	51-200	82
	“AQUABIO est un bureau d'études indépendant dont le métier est de produire, valoriser, expertiser des données hydrobiologiques.” Source: company website · checked Sep 3, 2026
14	EnvisolIndirect evidence	La Tour Du Pin, FranceHQ checked Sep 3, 2026	51-200	70
	“ENVISOL est une entreprise spécialisée dans le conseil et l’ingénierie offrant des prestations dans le domaine des sites et sols pollués.” Source: company website · checked Sep 3, 2026
15	Ségic IngénierieIndirect evidence	Verrières-le-buisson, FranceHQ checked Sep 3, 2026	51-200	64
	“SÉGIC Ingénierie est un acteur fort du Conseil dans les domaines de l’Environnement et des Infrastructures.” Source: company website · checked Sep 3, 2026
16	HydretudesIndirect evidence	Argonay, FranceHQ checked Sep 3, 2026	51-200	61
	“HYDRETUDES est un bureau d’études spécialisé dans l’ingénierie de l’eau, des risques naturels et de l’environnement.” Source: company website · checked Sep 3, 2026
17	Dejante InfraIndirect evidence	Malemort, FranceHQ checked Sep 3, 2026	51-200	59
	“Nous regroupons un panel de 12 activités spécifiques et complémentaires pour vous accompagner dans la réalisation de vos projets en toute autonomie.” Source: company website · checked Sep 3, 2026
18	GeoliaIndirect evidence	Morangis, FranceHQ checked Sep 3, 2026	51-200	58
	“Bureau d'Etudes Géotechniques, Hydrogéologie et Sites et Sols Pollués, Ingénierie des sols et fondations.” Source: company website · checked Sep 3, 2026
19	Prolog IngenieriePartial evidence	Paris, FranceHQ checked Sep 3, 2026	51-200	56
	“PROLOG INGENIERIE is a consulting engineering firm at the forefront of water management and remote-controlled systems, committed to enhancing water quality and environmental…” Source: company website · checked Sep 3, 2026
20	KAÉNAIndirect evidence	Saint Vincent De Mercuze, FranceHQ checked Sep 3, 2026	51-200	54
	“Bureau d'études géotechniques situé au coeur des Alpes (1 agence au Touvet et 1 agence à Annecy,1 agence à St Priest) ayant ses propres ateliers de sondages (5 foreuses dont 1…” Source: company website · checked Sep 3, 2026
21	Aquascop SarlIndirect evidence	Beaucouzé, FranceHQ checked Sep 3, 2026	51-200	53
	“Aquascop est un bureau d´études indépendant spécialisé dans l´étude des milieux aquatiques, implantés sur 5 agences en France métropolitaine (Angers, Montpellier, Toulouse, Nancy…” Source: company website · checked Sep 3, 2026
22	Sage IngenierieIndirect evidence	Gières, FranceHQ checked Sep 3, 2026	51-200	51
	“La Société Alpine Géotechnique (SAGE Ingénierie) est un bureau d'études de sols indépendant (SAS) dont les services couvrent toute l’ingénierie géotechnique spécifique aux…” Source: company website · checked Sep 3, 2026
23	EnvolisIndirect evidence	Gujan-Mestras, FranceHQ checked Sep 3, 2026	11-50	51
	“ENVOLIS est un bureau d’études composé de scientifiques et de consultants qui réalisent des expertises environnementales dans les domaines de l’eau, du sol et de la biodiversité…” Source: company website · checked Sep 3, 2026
24	Amodiag EnvironnementIndirect evidence	Prouvy, FranceHQ checked Sep 3, 2026	51-200	45
	“AMÉLIORER LE MILIEU NATUREL ET LA QUALITÉ DE VIE DES USAGERS PAR LE BIAIS DU TRAITEMENT DE L'EAU POTABLE ET DES EAUX USÉES Expert du monde de l’eau, des déchets et des…” Source: company website · checked Sep 3, 2026
25	SEIRIIndirect evidence	Montpellier, FranceHQ checked Sep 3, 2026	11-50	43
	“Réaliser vos projets en toute SEIRInité!” Source: company website · checked Sep 3, 2026

Showing 25 of 575 hydrogeological consulting firms based in France

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Hydrogeological consulting firms based in France at a glance

As of Sep 3, 2026

1-10Median size (employees)

ParisLargest hub · 36 HQs

117Contacts with mobile numbers

Sep 3, 2026Data refreshed

Companies by employee count

1-10

375

11-50

144

51-200

201-500

501-1,000

1,001-5,000

Verified emails by last verification

0–30

31–60

256

61–90

1,946

90–180

1,029

180+

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 consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in France whose own description of what they do matches “hydrogeological consulting firms”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among hydrogeological consulting firms, and records with no verified work email. Companies headquartered outside France 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 an evidence 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, 3,231 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 3, 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 consulting firms by metro

Hydrogeological consulting firms in Paris36

Frequently asked

How many hydrogeological consulting firms are there based in France?

RevenueBase identified 575 hydrogeological consulting firms headquartered in France 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?

Antea Group - France, headquartered in Colmar, tops this list with the largest team on record.

Which city has the most hydrogeological consulting firms?

Paris leads with 36 headquartered companies, followed by Lyon (12) and Montpellier (9).

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 3,231 verified decision-maker contacts tracked across these 575 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 3, 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.