Company lists · Data refreshed September 2026

Top 25 Water resources consulting firms based in France

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

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 341 companies tracked

RevenueBase identified 341 water resources consulting firms headquartered in France as of September 2026 and tracks 5,433 professional contacts across them, including 2,109 with verified work emails. Paris is the largest hub.

This list covers water resources 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 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

341Companies

5,433Contacts tracked

2,109Verified emails

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The 25 largest water resources consulting firms based in France

Ranked by team size

Top 25 of 341 water resources consulting firms 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 water resources 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 21, 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 21, 2026
2	Cabinet Merlin	Indirect evidence	Lyon, FranceHQ checked Sep 21, 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 21, 2026
3	Altereo	Indirect evidence	Venelles, FranceHQ checked Sep 21, 2026	51-200	203 contacts →
	Indirect evidence “Awakening Environmental Smartness.” Source: RevenueBase Database · checked Sep 21, 2026
4	Setec Énergie Environnement	Indirect evidence	Paris, FranceHQ checked Sep 21, 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 21, 2026
5	BRL Groupe	Indirect evidence	Nîmes Cedex 5, FranceHQ checked Sep 21, 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 21, 2026
6	Ingetec Ingénierie	Indirect evidence	Paris, FranceHQ checked Sep 21, 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 21, 2026
7	DCI Environnement	Indirect evidence	Quimper, FranceHQ checked Sep 21, 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 21, 2026
8	TEREA	Strong evidence	Marseille, FranceHQ checked Sep 21, 2026	11-50	73 contacts →
	Strong evidence “TEREA is a professional environmental consulting company specialized in environment and sustainable management of natural resources.” Source: RevenueBase Database · checked Sep 21, 2026
9	Ségic Ingénierie	Indirect evidence	Verrières-le-buisson, FranceHQ checked Sep 21, 2026	51-200	65 contacts →
	Indirect evidence “SÉGIC Ingénierie est un acteur fort du Conseil dans les domaines de l’Environnement et des Infrastructures.” Source: RevenueBase Database · checked Sep 21, 2026
10	OGI	Indirect evidence	Montreuil, FranceHQ checked Sep 21, 2026	51-200	64 contacts →
	Indirect evidence “OGI est un bureau d'études spécialisé en aménagement d’espaces publics.” Source: RevenueBase Database · checked Sep 21, 2026
11	Hydretudes	Indirect evidence	Argonay, FranceHQ checked Sep 21, 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 21, 2026
12	Prolog Ingenierie	Strong evidence	Paris, FranceHQ checked Sep 21, 2026	51-200	56 contacts →
	Strong 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
13	Hydroconseil	Partial evidence	Avignon, FranceHQ checked Sep 21, 2026	11-50	56 contacts →
	Partial evidence “Hydroconseil is a French consulting firm created in 1995 that specializes in improving essential public services for low-income populations in emerging and developing countries.” Source: RevenueBase Database · checked Sep 21, 2026
14	Ecogeos	Partial evidence	Arras, FranceHQ checked Sep 21, 2026	11-50	54 contacts →
	Partial evidence “ECOGEOS is a consulting firm that aims at providing scientific and technical assistance as well as advisory services in the field of environmental engineering (waste, soil and…” Source: RevenueBase Database · checked Sep 21, 2026
15	GES	Indirect evidence	Noyal-sur-vilaine, FranceHQ checked Sep 21, 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 21, 2026
16	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
17	Envolis	Indirect evidence	Gujan-mestras, FranceHQ checked Sep 21, 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 21, 2026
18	Amodiag Environnement	Indirect evidence	Prouvy, FranceHQ checked Sep 21, 2026	51-200	44 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 21, 2026
19	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
20	CDES	Indirect evidence	Luzancy, FranceHQ checked Sep 21, 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 21, 2026
21	Sepia Conseils	Indirect evidence	Paris, FranceHQ checked Sep 21, 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 21, 2026
22	Réalités Environnement	Indirect evidence	Trevoux, FranceHQ checked Sep 21, 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 21, 2026
23	Cogite	Indirect evidence	Paris, FranceHQ checked Sep 21, 2026	11-50	32 contacts →
	Indirect evidence “Créée en 2011 par François BODET, COGITE est une société spécialisée dans le Conseil aux Collectivités.” Source: RevenueBase Database · checked Sep 21, 2026
24	Servicad SUD Ouest	Indirect evidence	Blanquefort, FranceHQ checked Sep 21, 2026	11-50	29 contacts →
	Indirect evidence “Ingénierie & Topographie - Ville et déplacements - Eau et assainissement - Infrastructures de transport - Industrie” Source: RevenueBase Database · checked Sep 21, 2026
25	Osgapi	Indirect evidence	Nimes, FranceHQ checked Sep 21, 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 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: water resources 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 water resources consulting firms.
Partial evidence: Its own public description names part of water resources consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name water resources 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 341 water resources consulting firms based in France

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Water resources consulting firms based in France at a glance

As of Sep 21, 2026

38.8%Verified-email coverage

15.9Average contacts per company

1-10Median size (employees)

8.2%Largest-city concentration · Paris

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

228

11-50

51-200

201-500

501-1,000

1,001-5,000

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 341 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 water resources 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 “water resources 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 water resources 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 water resources 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, 2,109 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.

Water resources consulting firms by metro

Water resources consulting firms in Paris28

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 water resources 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 water resources consulting firms are there based in France?

RevenueBase identified 341 water resources 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 water resources consulting firms?

Paris leads with 28 headquartered companies, followed by Lyon (7) and Toulouse (7).

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 2,109 verified decision-maker contacts tracked across these 341 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.