Company lists · Data refreshed September 2026

Top 25 Hydrological consulting firms based in France

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

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 392 companies tracked

RevenueBase identified 392 hydrological consulting firms headquartered in France as of September 2026 and tracks 5,058 professional contacts across them, including 2,022 with verified work emails. Paris is the largest hub.

This list covers hydrological 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 28, 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 28, 2026 86% judged on-target in blind review

392Companies

5,058Contacts tracked

2,022Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest hydrological consulting firms based in France

Ranked by team size

Top 25 of 392 hydrological consulting firms based in France, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to hydrological consulting firms: 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	Antea Group - France	Indirect evidence	Olivet, FranceHQ checked Sep 28, 2026	1,001-5,000	737 contacts →
	Indirect evidence “Antea Group est une société internationale d’ingénierie et de conseil en environnement.” Source: RevenueBase Database · checked Sep 28, 2026
2	Altereo	Indirect evidence	Venelles, FranceHQ checked Sep 28, 2026	51-200	203 contacts →
	Indirect evidence “Awakening Environmental Smartness.” Source: RevenueBase Database · checked Sep 28, 2026
3	Setec Énergie Environnement	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	51-200	143 contacts →
	Indirect evidence “Setec énergie environnement is a subsidiary of the setec group, one of France’s leading engineering firms (3 300 employees).” Source: RevenueBase Database · checked Sep 28, 2026
4	BRL Groupe	Indirect evidence	Nîmes Cedex 5, FranceHQ checked Sep 28, 2026	501-1,000	142 contacts →
	Indirect evidence “A travers ses trois métiers principaux d’aménageur, d’ingénierie et d’exploitation de grands ouvrages hydrauliques, le Groupe BRL (5 sociétés (1), 101,79 M€ de CA, 804 salariés en…” Source: RevenueBase Database · checked Sep 28, 2026
5	Artifex	Indirect evidence	Albi, FranceHQ checked Sep 28, 2026	51-200	123 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 28, 2026
6	Semofi	Indirect evidence	Villeneuve-le-roi, FranceHQ checked Sep 28, 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 28, 2026
7	Creocean	Indirect evidence	La Rochelle, FranceHQ checked Sep 28, 2026	51-200	90 contacts →
	Indirect evidence “Notre expertise au service des océans et des littoraux : Notre bureau d'études accompagne les projets sur l’ensemble du littoral français et à l’international, avec une expertise…” Source: RevenueBase Database · checked Sep 28, 2026
8	Ingetec Ingénierie	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	88 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 28, 2026
9	DCI Environnement	Indirect evidence	Quimper, FranceHQ checked Sep 28, 2026	51-200	82 contacts →
	Indirect evidence “DCI Environnement – Bureau d’études indépendant Depuis 2003, DCI Environnement accompagne les maîtres d’ouvrage et les collectivités dans leurs projets d’aménagement urbain, de…” Source: RevenueBase Database · checked Sep 28, 2026
10	Aquabio	Indirect evidence	Saint-germain Du Puch, FranceHQ checked Sep 28, 2026	51-200	81 contacts →
	Indirect evidence “AQUABIO est un bureau d'études indépendant dont le métier est de produire, valoriser, expertiser des données hydrobiologiques.” Source: RevenueBase Database · checked Sep 28, 2026
11	OGI	Indirect evidence	Montreuil, FranceHQ checked Sep 28, 2026	51-200	64 contacts →
	Indirect evidence “OGI est un bureau d'études spécialisé en aménagement d’espaces publics.” Source: RevenueBase Database · checked Sep 28, 2026
12	Hydretudes	Indirect evidence	Argonay, FranceHQ checked Sep 28, 2026	51-200	64 contacts →
	Indirect evidence “HYDRETUDES est un bureau d’études spécialisé dans l’ingénierie de l’eau, des risques naturels et de l’environnement.” Source: RevenueBase Database · checked Sep 28, 2026
13	Geolia	Indirect evidence	Morangis, FranceHQ checked Sep 28, 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 28, 2026
14	Prolog Ingenierie	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	51-200	56 contacts →
	Partial 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 28, 2026
15	GES	Indirect evidence	Noyal-sur-vilaine, FranceHQ checked Sep 28, 2026	11-50	53 contacts →
	Indirect evidence “GES est une société spécialisée dans la recherche, les études et le conseil sur l'eau, l'environnement et l'industrie.” Source: RevenueBase Database · checked Sep 28, 2026
16	Aquascop Sarl	Indirect evidence	Beaucouzé, FranceHQ checked Sep 28, 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 28, 2026
17	Envolis	Indirect evidence	Gujan-mestras, FranceHQ checked Sep 28, 2026	11-50	52 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 28, 2026
18	SEIRI	Indirect evidence	Montpellier, FranceHQ checked Sep 28, 2026	11-50	43 contacts →
	Indirect evidence “Réaliser vos projets en toute SEIRInité!” Source: RevenueBase Database · checked Sep 28, 2026
19	CDES	Indirect evidence	Luzancy, FranceHQ checked Sep 28, 2026	51-200	42 contacts →
	Indirect evidence “CDES, c’est 100 experts engagés et passionnés, qui mettent chaque jour leur savoir-faire au service de la préservation et la valorisation des milieux aquatiques.” Source: RevenueBase Database · checked Sep 28, 2026
20	Sepia Conseils	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	42 contacts →
	Indirect evidence “SEPIA Conseils accompagne depuis plus de 30 ans les acteurs de la gestion de l’eau et de l’aménagement du territoire vers des solutions durables, sobres et résilientes face aux…” Source: RevenueBase Database · checked Sep 28, 2026
21	Réalités Environnement	Indirect evidence	Trevoux, FranceHQ checked Sep 28, 2026	11-50	35 contacts →
	Indirect evidence “REALITES Environnement est un bureau d'études indépendant qui intervient pour le compte de collectivités locales, d'industriels et de particuliers sur l'ensemble des études, des…” Source: RevenueBase Database · checked Sep 28, 2026
22	ICSEO	Indirect evidence	Semur En Auxois, FranceHQ checked Sep 28, 2026	51-200	35 contacts →
	Indirect evidence “ICSEO est un bureau d'études de sols, indépendant et de taille humaine répartis en plusieurs agences.” Source: RevenueBase Database · checked Sep 28, 2026
23	Cofrepeche	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	n/a	31 contacts →
	Indirect evidence “COFREPECHE, société anonyme à conseil d'administration, a été créée en 1980 par des professionnels du monde maritime.” Source: RevenueBase Database · checked Sep 28, 2026
24	Osgapi	Indirect evidence	Nimes, FranceHQ checked Sep 28, 2026	11-50	24 contacts →
	Indirect evidence “OSGAPI est un bureau d'étude spécialisé dans la gestion du risque d'inondation assistant les collectivités territoriales mais aussi les particuliers.” Source: RevenueBase Database · checked Sep 28, 2026
25	Ecofilae	Indirect evidence	Montpellier, FranceHQ checked Sep 28, 2026	11-50	23 contacts →
	Indirect evidence “Spécialiste de la réutilisation des eaux (REUSE), Ecofilae, société pionnière et indépendante de conseil et d’ingénierie, propose depuis 2009 un accompagnement à 360° auprès des…” Source: RevenueBase Database · checked Sep 28, 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: hydrological consulting firms. 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 hydrological consulting firms.
Partial evidence: Its own public description names part of hydrological consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name hydrological consulting firms. 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 392 hydrological consulting firms based in France

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 2,022 reachable decision-makers.

Free signup · no credit card

View the full list →

Hydrological consulting firms based in France at a glance

As of Sep 28, 2026

40.0%Verified-email coverage

12.9Average contacts per company

1-10Median size (employees)

6.1%Largest-city concentration · Paris

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

264

11-50

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 392 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 hydrological consulting firms, 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 “hydrological consulting firms”. 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 hydrological consulting firms), 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 hydrological 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 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, 2,022 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 28, 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 hydrological consulting firms, 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 hydrological consulting firms are there based in France?

RevenueBase identified 392 hydrological 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 Olivet, tops this list with the largest team on record.

Which city has the most hydrological consulting firms?

Paris leads with 24 headquartered companies, followed by Lyon (9) and Toulouse (8).

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 2,022 verified decision-maker contacts tracked across these 392 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 28, 2026.

Ready to reach these companies? Verified emails and direct dials for all 392 hydrological consulting firms based in France. Start with a free account, no credit card.

Download this list →

Related lists

Hydrological consulting firms by geography

Browse the directory

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.