Company lists · Data refreshed September 2026

Top 25 Hydrogeology companies based in France

Name: Hydrogeology companies based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 542 companies tracked

RevenueBase identified 542 hydrogeology companies headquartered in France as of September 2026 and tracks 7,299 professional contacts across them, including 2,290 with verified work emails. Paris is the largest hub.

This list covers hydrogeology companies 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, 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

542Companies

7,299Contacts tracked

2,290Verified emails

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The 25 largest hydrogeology companies based in France

Ranked by team size

Top 25 of 542 hydrogeology companies based in France, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to hydrogeology 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	Foraco International SA	Indirect evidence	Marseille, FranceHQ checked Sep 21, 2026	1,001-5,000	458 contacts →
	Indirect evidence “Foraco International SA (TSX: FAR) is a leading global mineral drilling services company that provides a comprehensive and reliable service offering in mining and water projects.” Source: RevenueBase Database · checked Sep 21, 2026
2	Groupe Géotec	Indirect evidence	Quetigny, FranceHQ checked Sep 21, 2026	501-1,000	441 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 21, 2026
3	ECR Environnement	Indirect evidence	Larmor Plage, FranceHQ checked Sep 21, 2026	201-500	371 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 21, 2026
4	Beicip-Franlab	Indirect evidence	Rueil-malmaison, FranceHQ checked Sep 21, 2026	51-200	212 contacts →
	Indirect evidence “Beicip-Franlab is a leading Energy Consultancy and Software Editor created in the 1960's with recognized worldwide hands-on expertise.” Source: RevenueBase Database · checked Sep 21, 2026
5	Setec Hydratec	Indirect evidence	Paris, FranceHQ checked Sep 21, 2026	201-500	182 contacts →
	Indirect evidence “Bureau d’études techniques fondé en 1974, setec hydratec s’est positionné en tant qu’expert sur tous les sujets liés à l’ingénierie de l’eau et des sites et sols pollués, afin de…” Source: RevenueBase Database · checked Sep 21, 2026
6	Hydrokarst	Indirect evidence	Sassenage, FranceHQ checked Sep 21, 2026	201-500	170 contacts →
	Indirect evidence “HYDROKARST joins JARNIAS GROUP!” Source: RevenueBase Database · checked Sep 21, 2026
7	Geotechnique SAS	Indirect evidence	Avignon, FranceHQ checked Sep 21, 2026	51-200	134 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 21, 2026
8	Temsol	Indirect evidence	Merignac Cedex, FranceHQ checked Sep 21, 2026	51-200	125 contacts →
	Indirect evidence “Temsol est reconnue depuis 50 ans comme le spécialiste dans les domaines de la géotechnique, des structures et de l’environnement.” Source: RevenueBase Database · checked Sep 21, 2026
9	Aqualter	Indirect evidence	Chartres, FranceHQ checked Sep 21, 2026	201-500	123 contacts →
	Indirect evidence “Première entreprise du secteur de l’eau indépendante des majors, AQUALTER développe depuis 50 ans une expertise dans la production et la distribution d’eau potable, la collecte et…” Source: RevenueBase Database · checked Sep 21, 2026
10	Sofregaz SAS	Indirect evidence	Puteaux, FranceHQ checked Sep 21, 2026	51-200	122 contacts →
	Indirect evidence “SOFREGAZ is a leading independent engineering company, created in 1959 by Gaz de France, with over 1300 projects across 95 countries.” Source: RevenueBase Database · checked Sep 21, 2026
11	Semofi	Indirect evidence	Villeneuve-le-roi, FranceHQ checked Sep 21, 2026	51-200	114 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 21, 2026
12	PCM Ingenierie	Indirect evidence	Saint-mandé, FranceHQ checked Sep 21, 2026	51-200	96 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 21, 2026
13	Soletanche Bachy International	Indirect evidence	Rueil Malmaison, FranceHQ checked Sep 21, 2026	201-500	81 contacts →
	Indirect evidence “SOLETANCHE BACHY INTERNATIONAL is a specialized ground engineering construction company based in Rueil Malmaison, France.” Source: RevenueBase Database · checked Sep 21, 2026
14	SOL Solution SAS	Indirect evidence	Riom, FranceHQ checked Sep 21, 2026	51-200	65 contacts →
	Indirect evidence “Sol Solution is a geotechnical, geological, and geophysical engineering firm, established in 1992.” Source: RevenueBase Database · checked Sep 21, 2026
15	Accessol	Indirect evidence	Savigny-le-temple, FranceHQ checked Sep 21, 2026	11-50	61 contacts →
	Indirect evidence “Mur fissuré?” Source: RevenueBase Database · checked Sep 21, 2026
16	Geolia	Indirect evidence	Morangis, FranceHQ checked Sep 21, 2026	51-200	58 contacts →
	Indirect evidence “Bureau d'Etudes Géotechniques, Hydrogéologie et Sites et Sols Pollués, Ingénierie des sols et fondations.” Source: RevenueBase Database · checked Sep 21, 2026
17	Prolog Ingenierie	Indirect evidence	Paris, FranceHQ checked Sep 21, 2026	51-200	56 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 21, 2026
18	KAÉNA	Indirect evidence	Saint Vincent De Mercuze, FranceHQ checked Sep 21, 2026	51-200	53 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 21, 2026
19	Aquascop Sarl	Indirect evidence	Beaucouzé, FranceHQ checked Sep 21, 2026	51-200	53 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 21, 2026
20	Sage Ingenierie	Indirect evidence	Gières, FranceHQ checked Sep 21, 2026	51-200	51 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 21, 2026
21	Hydroconsult Sarl	Indirect evidence	Kervignac, FranceHQ checked Sep 21, 2026	11-50	49 contacts →
	Indirect evidence “Hydroconsult is a recognized actor in worldwide Hydrographic and Geophysical Survey's assistance and Marine Consulting, with 20 years experience.” Source: RevenueBase Database · checked Sep 21, 2026
22	BWI	Indirect evidence	Paris, FranceHQ checked Sep 21, 2026	11-50	47 contacts →
	Indirect evidence “BWI - which stands for Blue Water Intelligence, was established in June 2022 in Toulouse, France.” Source: RevenueBase Database · checked Sep 21, 2026
23	CFG Geothermal	Indirect evidence	Orleans, FranceHQ checked Sep 21, 2026	11-50	46 contacts →
	Indirect evidence “CFG Services est une société de services et d’ingénierie, filiale à 100% du BRGM, spécialisée en géothermie qui dès le début des années 80 a été pionnière dans le développement…” Source: RevenueBase Database · checked Sep 21, 2026
24	SEIRI	Indirect evidence	Montpellier, FranceHQ checked Sep 21, 2026	11-50	43 contacts →
	Indirect evidence “Réaliser vos projets en toute SEIRInité!” Source: RevenueBase Database · checked Sep 21, 2026
25	Fondouest	Indirect evidence	Longueville, FranceHQ checked Sep 21, 2026	51-200	42 contacts →
	Indirect evidence “FONDOUEST is a construction company based out of ZONE ARTISANALE 727 RUE DU PONT CE, LONGUEVILLE, France.” 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: hydrogeology 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 hydrogeology companies.
Partial evidence: Its own public description names part of hydrogeology companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name hydrogeology 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 542 hydrogeology companies based in France

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Hydrogeology companies based in France at a glance

As of Sep 21, 2026

31.4%Verified-email coverage

13.5Average contacts per company

1-10Median size (employees)

3.5%Largest-city concentration · Paris

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

342

11-50

146

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured worldwide rather than for France, so it is reported there. Company counts and contact totals on this page are exact for France, over 542 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 hydrogeology 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 France whose own description of what they do matches “hydrogeology 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 hydrogeology 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 hydrogeology companies, 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 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, 2,290 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.

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 hydrogeology 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 hydrogeology companies are there based in France?

RevenueBase identified 542 hydrogeology companies 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?

Foraco International SA, headquartered in Marseille, tops this list with the largest team on record.

Which city has the most hydrogeology companies?

Paris leads with 19 headquartered companies, followed by Lyon (10) and Orleans (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 2,290 verified decision-maker contacts tracked across these 542 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.