Company lists · Data refreshed September 2026

Top 25 Water management consulting firms based in France

Name: Water management 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 492 companies tracked

RevenueBase identified 492 water management consulting firms headquartered in France as of September 2026 and tracks 33,075 professional contacts across them, including 9,751 with verified work emails. Paris is the largest hub.

This list covers water management 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

492Companies

33,075Contacts tracked

9,751Verified emails

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The 25 largest water management consulting firms based in France

Ranked by team size

Top 25 of 492 water management 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 management 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	SUEZ	Partial evidence	Paris, FranceHQ checked Sep 21, 2026	10001+	21,549 contacts →
	Partial evidence “We provide essential services in the water and waste sectors to preserve resources and improve quality of life wherever we operate.” Source: RevenueBase Database · checked Sep 21, 2026
2	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
3	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
4	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
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	STGS	Indirect evidence	Avranches, FranceHQ checked Sep 21, 2026	201-500	151 contacts →
	Indirect evidence “Chez STGS, nous accompagnons les collectivités locales dans la gestion de leur service d’eau et d’assainissement.” Source: RevenueBase Database · checked Sep 21, 2026
7	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
8	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
9	Odyssee Environnement Water Treatment	Strong evidence	Requeil, FranceHQ checked Sep 21, 2026	51-200	101 contacts →
	Strong evidence “Since 2006, ODYSSEE Environnement has been committed to ethical and sustainable water management in the service of industrial performance.” Source: RevenueBase Database · checked Sep 21, 2026
10	Auxitec	Partial evidence	Le Havre, FranceHQ checked Sep 21, 2026	501-1,000	93 contacts →
	Partial evidence “PARTAGER LE PROGRES Auxitec a rejoint Artelia en 2017, un groupe international multidisciplinaire de conseil, d’ingénierie et de management de projet dans les secteurs du…” Source: RevenueBase Database · checked Sep 21, 2026
11	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
12	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
13	Aquaprox Industries	Indirect evidence	Levallois Perret, FranceHQ checked Sep 21, 2026	51-200	74 contacts →
	Indirect evidence “Bienvenue sur la page AQUAPROX Industries!” Source: RevenueBase Database · checked Sep 21, 2026
14	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
15	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
16	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
17	SIMOP	Partial evidence	Sainte-mere-eglise, FranceHQ checked Sep 21, 2026	51-200	61 contacts →
	Partial evidence “Simop has been designing, manufacturing and distributing wastewater and stormwater management solutions for 40 years.” Source: RevenueBase Database · checked Sep 21, 2026
18	Nijhuis Saur Industries France	Indirect evidence	Issy-les-moulineaux, FranceHQ checked Sep 21, 2026	n/a	57 contacts →
	Indirect evidence “De la production d'eau industrielle au traitement des effluents et leur réutilisation, et avec ses propres équipes opérationnelles réparties sur le territoire national, Nijhuis…” Source: RevenueBase Database · checked Sep 21, 2026
19	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
20	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
21	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
22	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
23	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
24	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
25	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

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 management 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 management consulting firms.
Partial evidence: Its own public description names part of water management 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 management 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 492 water management consulting firms based in France

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Water management consulting firms based in France at a glance

As of Sep 21, 2026

29.5%Verified-email coverage

67.2Average contacts per company

1-10Median size (employees)

7.7%Largest-city concentration · Paris

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

327

11-50

121

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 492 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 management 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 management 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 management 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 management 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, 9,751 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 management consulting firms by metro

Water management consulting firms in Paris38

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 management 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 management consulting firms are there based in France?

RevenueBase identified 492 water management 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?

SUEZ, headquartered in France, tops this list with the largest team on record.

Which city has the most water management consulting firms?

Paris leads with 38 headquartered companies, followed by Lyon (12) 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 9,751 verified decision-maker contacts tracked across these 492 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.