Company lists · Data refreshed September 2026

Top 25 Activated sludge system contractors based in France

Name: Activated sludge system contractors based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 103 companies tracked

RevenueBase identified 103 activated sludge system contractors headquartered in France as of September 2026 and tracks 1,408 professional contacts across them, including 396 with verified work emails. Ancenis is the largest hub.

This list covers activated sludge system contractors 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 30, 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 30, 2026 86% judged on-target in blind review

103Companies

1,408Contacts tracked

396Verified emails

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The 25 largest activated sludge system contractors based in France

Ranked by team size

Top 25 of 103 activated sludge system contractors based in France, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to activated sludge system contractors: 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	OVIVE	Indirect evidence	Seclin, FranceHQ checked Sep 30, 2026	51-200	155 contacts →
	Indirect evidence “Traitement des Eaux Industrielles et Lixiviats Location de Matériel et Prestations d'Exploitation Industry wastewater and Leachate treatment Equipment rental and operation…” Source: RevenueBase Database · checked Sep 30, 2026
2	EMO	Partial evidence	Noyal Sur Vilaine, FranceHQ checked Sep 30, 2026	51-200	113 contacts →
	Partial evidence “Global solutions for water and sludge treatment:#wastewater, drinking water, industrial #effluents.” Source: RevenueBase Database · checked Sep 30, 2026
3	Sources	Indirect evidence	Nanterre, FranceHQ checked Sep 30, 2026	51-200	103 contacts →
	Indirect evidence “Sources est une société Anonyme, indépendante, prospère, en croissance constante et maîtrisée.” Source: RevenueBase Database · checked Sep 30, 2026
4	SIMOP	Indirect evidence	Sainte-mere-eglise, FranceHQ checked Sep 30, 2026	51-200	61 contacts →
	Indirect evidence “Simop has been designing, manufacturing and distributing wastewater and stormwater management solutions for 40 years.” Source: RevenueBase Database · checked Sep 30, 2026
5	Biotrade France	Indirect evidence	Portet-sur-garonne, FranceHQ checked Sep 30, 2026	51-200	33 contacts →
	Indirect evidence “Société française basée à Toulouse, BIOTRADE conçoit, fabrique et commercialise depuis 1996 des équipements de prétraitement, d’aération et de mélange pour répondre aux différents…” Source: RevenueBase Database · checked Sep 30, 2026
6	Cohin Environnement	Partial evidence	Versailles, FranceHQ checked Sep 30, 2026	1-10	26 contacts →
	Partial evidence “COHIN ENVIRONNEMENT conçoit et réalise des stations d'épuration et des systèmes de traitement adaptés aux besoins des industriels et des municipalités avec tous types de process…” Source: RevenueBase Database · checked Sep 30, 2026
7	Jousse	Indirect evidence	Parigne Sur Braye, FranceHQ checked Sep 30, 2026	11-50	25 contacts →
	Indirect evidence “L'activité de JOUSSE SAS est la conception, la réalisation et la maintenance des installations de Traitement des Eaux (traitement eau potable, traitement des eaux usées, station…” Source: RevenueBase Database · checked Sep 30, 2026
8	EPUR	Indirect evidence	FranceHQ checked Sep 30, 2026	11-50	22 contacts →
	Indirect evidence “Conception, construction et maintenance des stations d'épuration et des usines d'eau potable.” Source: RevenueBase Database · checked Sep 30, 2026
9	Atlantique Industrie	Indirect evidence	Ancenis, FranceHQ checked Sep 30, 2026	11-50	21 contacts →
	Indirect evidence “Atlantique industrie est une entreprise spécialisée dans le traitement des eaux usées provenant des industries.” Source: RevenueBase Database · checked Sep 30, 2026
10	Qualleo Environnement	Indirect evidence	Colomiers, FranceHQ checked Sep 30, 2026	11-50	20 contacts →
	Indirect evidence “Spécialisée dans le traitement d’eau, Qualléo s’inscrit dans les opérations de fourniture de matériel d’équipement de traitement d’eau (adoucisseur, filtration, osmose inverse…” Source: RevenueBase Database · checked Sep 30, 2026
11	Fournié ET CIE Scop SA	Indirect evidence	Sauzé-vaussais, FranceHQ checked Sep 30, 2026	51-200	18 contacts →
	Indirect evidence “Spécialisés dans le domaine du pompage et du traitement de l’eau, nous faisons en conception et réalisation des stations de pompage, stations d’épuration, traitements d’eau…” Source: RevenueBase Database · checked Sep 30, 2026
12	EJ Énergies	Indirect evidence	Geispolsheim, FranceHQ checked Sep 30, 2026	51-200	17 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026
13	Bionest France	Indirect evidence	Villeneuve-les-bouloc, FranceHQ checked Sep 30, 2026	11-50	16 contacts →
	Indirect evidence “Notre mission Bionest France conçoit et développe des solutions performantes et durables de traitement des eaux usées.” Source: RevenueBase Database · checked Sep 30, 2026
14	Sapoval, Cleantech Expert	Indirect evidence	Albi, FranceHQ checked Sep 30, 2026	11-50	15 contacts →
	Indirect evidence “SAPOVAL is an expert in innovative solutions for efficient effluent and waste management.” Source: RevenueBase Database · checked Sep 30, 2026
15	Aquaprox Group	Indirect evidence	Levallois-perret, FranceHQ checked Sep 30, 2026	201-500	15 contacts →
	Indirect evidence “AQUAPROX Group is a French owned company that accompanies industries and buildings and in each step of their water treatment facilities.” Source: RevenueBase Database · checked Sep 30, 2026
16	Serinol	Indirect evidence	Bram, FranceHQ checked Sep 30, 2026	11-50	15 contacts →
	Indirect evidence “SERINOL est une entreprise indépendante dédiée à la conception et la construction d'équipements destinés au traitement des eaux usées et des déchets urbains ou industriels.” Source: RevenueBase Database · checked Sep 30, 2026
17	Wangner	Indirect evidence	Magny Les Hameaux, FranceHQ checked Sep 30, 2026	11-50	14 contacts →
	Indirect evidence “Wangner est l'un des principaux acteurs en France du traitement des eaux.” Source: RevenueBase Database · checked Sep 30, 2026
18	Faivre Industrie-Environnement	Indirect evidence	Baume-les-dames, FranceHQ checked Sep 30, 2026	11-50	13 contacts →
	Indirect evidence “Faivre Industrie-Environnement is a French company specialized in the conception of machines for wastewater treatment - Aeration - Tertiary filtration - Pumping For over 60 years…” Source: RevenueBase Database · checked Sep 30, 2026
19	Hydraustab	Indirect evidence	St Jean De Vedas, FranceHQ checked Sep 30, 2026	11-50	12 contacts →
	Indirect evidence “Créée en 1994, notre entreprise a acquis au fil des ans une expérience et un savoir-faire reconnus par l'ensemble de ses clients et partenaires dans le domaine de l'eau.” Source: RevenueBase Database · checked Sep 30, 2026
20	Vincent Gestion DE L'eau	Indirect evidence	Cherisy, FranceHQ checked Sep 30, 2026	1-10	8 contacts →
	Indirect evidence “À la demande des architectes, bureaux d’études, entreprises de BTP, lotisseurs et collectivités, la Société Vincent fournit des solutions de gestion des eaux usées et pluviales -…” Source: RevenueBase Database · checked Sep 30, 2026
21	EGW Maintenance	Indirect evidence	Duppigheim, FranceHQ checked Sep 30, 2026	11-50	8 contacts →
	Indirect evidence “Maintenance industrielle - Manutention continue - Matériel pour le traitement des eaux usées - Chaudronnerie - Découpe laser - Pliage” Source: RevenueBase Database · checked Sep 30, 2026
22	Hydro Group	Indirect evidence	Valaurie, FranceHQ checked Sep 30, 2026	1-10	7 contacts →
	Indirect evidence “Hydro Group – Expertise & Innovation dans le Pompage et le Broyage Urbain & Industriel Chez Hydro Group, nous accompagnons collectivités et industriels à chaque étape du…” Source: RevenueBase Database · checked Sep 30, 2026
23	Seihe MP	Indirect evidence	Saix, FranceHQ checked Sep 30, 2026	11-50	6 contacts →
	Indirect evidence “SEIHE réalise de nombreuses installations d'eau potable et d'assainissement dans tout le grand Sud-Ouest : Construction de stations de pompage (eaux usées, eau potable, eaux…” Source: RevenueBase Database · checked Sep 30, 2026
24	FLAU	Indirect evidence	Mons-en-baroeul, FranceHQ checked Sep 30, 2026	1-10	6 contacts →
	Indirect evidence “FLAU is 35 years of expertise in the field of water treatment services industries and communities.” Source: RevenueBase Database · checked Sep 30, 2026
25	DFM Depannages Fournitures Maintenance	Indirect evidence	Villepinte, FranceHQ checked Sep 30, 2026	11-50	3 contacts →
	Indirect evidence “DFM DEPANNAGES FOURNITURES MAINTENANCE is an utilities company based out of 13 ALLEE LOUIS BREGUET, VILLEPINTE, France.” Source: RevenueBase Database · checked Sep 30, 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: activated sludge system contractors. 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 activated sludge system contractors.
Partial evidence: Its own public description names part of activated sludge system contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name activated sludge system contractors. 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 103 activated sludge system contractors based in France

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Activated sludge system contractors based in France at a glance

As of Sep 30, 2026

28.1%Verified-email coverage

13.7Average contacts per company

11-50Median size (employees)

1.9%Largest-city concentration · Ancenis

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

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 103 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 activated sludge system contractors, 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 “activated sludge system contractors”. 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 activated sludge system contractors), 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 activated sludge system contractors, 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, 396 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 30, 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 activated sludge system contractors, 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 activated sludge system contractors are there based in France?

RevenueBase identified 103 activated sludge system contractors 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?

OVIVE, headquartered in Seclin, tops this list with the largest team on record.

Which city has the most activated sludge system contractors?

Ancenis leads with 2 headquartered companies, followed by Paris (2) and Seclin (2).

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 396 verified decision-maker contacts tracked across these 103 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 30, 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.