Company lists · Data refreshed September 2026

Top 25 Hydro engineering and consulting firms based in France

Name: Hydro engineering and 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 1,231 companies tracked

RevenueBase identified 1,231 hydro engineering and consulting firms headquartered in France as of September 2026 and tracks 29,122 professional contacts across them, including 11,449 with verified work emails. Paris is the largest hub.

This list covers hydro engineering and 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

1,231Companies

29,122Contacts tracked

11,449Verified emails

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

The 25 largest hydro engineering and consulting firms based in France

Ranked by team size

Top 25 of 1,231 hydro engineering and 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 hydro engineering and 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	Artelia	Partial evidence	Saint-ouen, FranceHQ checked Sep 28, 2026	5,001-10,000	4,612 contacts →
	Partial evidence “Artelia is an international multidisciplinary consultancy, engineering and project management group specialising in mobility, water, energy, building and industry.” Source: RevenueBase Database · checked Sep 28, 2026
2	Bouygues Travaux Publics	Indirect evidence	Saint-quentin-en-yvelines Cedex, FranceHQ checked Sep 28, 2026	10001+	1,850 contacts →
	Indirect evidence “CONSTRUIRE DES INFRASTRUCTURES DURABLES Bouygues TP est l’un des leaders mondiaux dans les domaines de l’aménagement du territoire et de la construction d’infrastructures durables.” Source: RevenueBase Database · checked Sep 28, 2026
3	Vulcain Engineering Group	Strong evidence	Neuilly-sur-seine, FranceHQ checked Sep 28, 2026	5,001-10,000	1,496 contacts →
	Strong evidence “Vulcain Engineering Group is a multi-specialist engineering and consulting group serving industrial companies across the globe, focused on critical sectors: energy, health…” Source: RevenueBase Database · checked Sep 28, 2026
4	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
5	Parlym	Partial evidence	Estaque, FranceHQ checked Sep 28, 2026	1,001-5,000	732 contacts →
	Partial evidence “For over 50 years the Parlym Group has managed to establish itself as a major player in industrial engineering all over the world.” Source: RevenueBase Database · checked Sep 28, 2026
6	Cabinet Merlin	Indirect evidence	Lyon, FranceHQ checked Sep 28, 2026	501-1,000	481 contacts →
	Indirect evidence “Acteur reconnu depuis plus de 100 ans, le participe activement à la transition écologique en proposant des prestations de conseil et d’ingénierie.” Source: RevenueBase Database · checked Sep 28, 2026
7	TPF Ingenierie	Indirect evidence	Marseille, FranceHQ checked Sep 28, 2026	201-500	452 contacts →
	Indirect evidence “TPF Ingénierie, société d’ingénierie active dans les secteurs du Bâtiment, des Infrastructures, de l’Eau/Environnement et de l’Énergie/Maintenance, s’appuie sur plus de 60 ans…” Source: RevenueBase Database · checked Sep 28, 2026
8	Groupe Géotec	Indirect evidence	Quetigny, FranceHQ checked Sep 28, 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 28, 2026
9	Neo2	Partial evidence	Levallois-perret, FranceHQ checked Sep 28, 2026	501-1,000	390 contacts →
	Partial evidence “NEO2 is an Engineering Consultancy and Resource Provider active in the Oil & Gas, Water Treatment & Desalination, and Power Generation industries.” Source: RevenueBase Database · checked Sep 28, 2026
10	Atlantic Ingénierie	Indirect evidence	Saint-herblain, FranceHQ checked Sep 28, 2026	201-500	341 contacts →
	Indirect evidence “Atlantic Ingénierie, l’énergie d’avancer ensemble Chez Atlantic Ingénierie, nous avons une conviction : les projets d’énergie et d’industrie avancent mieux quand on allie…” Source: RevenueBase Database · checked Sep 28, 2026
11	Seureca	Strong evidence	Aubervilliers, FranceHQ checked Sep 28, 2026	201-500	250 contacts →
	Strong evidence “Seureca is the Consulting Engineering and Strategic and Operational Assistance division of the Veolia Group.” Source: RevenueBase Database · checked Sep 28, 2026
12	Ep2c	Indirect evidence	Balma, FranceHQ checked Sep 28, 2026	501-1,000	211 contacts →
	Indirect evidence “EP2C recruits talents looking for an international career.” Source: RevenueBase Database · checked Sep 28, 2026
13	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
14	Aventa	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	201-500	176 contacts →
	Indirect evidence “Aventa empowers the Marine Energy market with the sharpest skills to help design a bluer future.” Source: RevenueBase Database · checked Sep 28, 2026
15	Hydrokarst	Indirect evidence	Sassenage, FranceHQ checked Sep 28, 2026	201-500	170 contacts →
	Indirect evidence “HYDROKARST joins JARNIAS GROUP!” Source: RevenueBase Database · checked Sep 28, 2026
16	Alcadia Entreprises	Indirect evidence	Lyon, FranceHQ checked Sep 28, 2026	51-200	166 contacts →
	Indirect evidence “Alcadia est une entreprise de conseil en ingénierie spécialisée dans les domaines technologiques à forte valeur ajoutée.” Source: RevenueBase Database · checked Sep 28, 2026
17	ISL Ingénierie	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	51-200	163 contacts →
	Partial evidence “ISL Ingénierie is a French engineering company, independent from any industrial or financial group, created in 1986 by three experienced engineers : Freddy Isambert, Michel…” Source: RevenueBase Database · checked Sep 28, 2026
18	Setec Énergie Environnement	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	51-200	143 contacts →
	Partial 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
19	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
20	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
21	CET Ingénierie	Indirect evidence	Clichy, FranceHQ checked Sep 28, 2026	51-200	117 contacts →
	Indirect evidence “Leader indépendant sur le marché de l'ingénierie française, CET Ingénierie met, au service de ses clients, plus de 50 ans de savoir-faire et des solutions techniques innovantes…” Source: RevenueBase Database · checked Sep 28, 2026
22	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
23	Oneside	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	51-200	107 contacts →
	Indirect evidence “Société de conseil en ingénierie, nous proposons notre expertise dans 3 domaines - Énergies & Industrie - Infrastructures Ferroviaires - Génie civil & Bâtiment.” Source: RevenueBase Database · checked Sep 28, 2026
24	OTIMO	Indirect evidence	Boulogne-billancourt, FranceHQ checked Sep 28, 2026	51-200	106 contacts →
	Indirect evidence “otimo est une société de conseil en ingénierie spécialisée dans les secteurs de l'Énergie, l'Environnement et les Infrastructures.” Source: RevenueBase Database · checked Sep 28, 2026
25	Betrec IG	Indirect evidence	Grenoble, FranceHQ checked Sep 28, 2026	51-200	105 contacts →
	Indirect evidence “Créé en 1965 à l'occasion des Jeux Olympiques d'hiver de Grenoble, BETREC IG n'a cessé de développer ses compétences de bureau d'études pluridisciplinaire pour se donner les…” 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: hydro engineering and 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 hydro engineering and consulting firms.
Partial evidence: Its own public description names part of hydro engineering and consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name hydro engineering and 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 1,231 hydro engineering and consulting firms based in France

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 11,449 reachable decision-makers.

Free signup · no credit card

View the full list →

Hydro engineering and consulting firms based in France at a glance

As of Sep 28, 2026

39.3%Verified-email coverage

23.7Average contacts per company

1-10Median size (employees)

8.0%Largest-city concentration · Paris

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

737

11-50

358

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 1,231 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 hydro engineering and 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 “hydro engineering and 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 hydro engineering and 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 hydro engineering and 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, 11,449 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.

Hydro engineering and consulting firms by metro

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 hydro engineering and 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 hydro engineering and consulting firms are there based in France?

RevenueBase identified 1,231 hydro engineering and 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?

Artelia, headquartered in Saint-Ouen, tops this list with the largest team on record.

Which city has the most hydro engineering and consulting firms?

Paris leads with 98 headquartered companies, followed by Lyon (37) and Toulouse (20).

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 11,449 verified decision-maker contacts tracked across these 1,231 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 1,231 hydro engineering and consulting firms based in France. Start with a free account, no credit card.

Download this list →

Related lists

Hydro engineering and 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.