Company lists · Data refreshed September 2026

Top 25 Water system maintenance companies based in France

Name: Water system maintenance companies based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 254 companies tracked

RevenueBase identified 254 water system maintenance companies headquartered in France as of September 2026 and tracks 1,115 professional contacts across them, including 161 with verified work emails. Paris is the largest hub.

This list covers water system maintenance companies 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 22, 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 22, 2026 86% judged on-target in blind review

254Companies

1,115Contacts tracked

161Verified emails

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The 25 largest water system maintenance companies based in France

Ranked by team size

Top 25 of 254 water system maintenance companies based in France, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to water system maintenance companies: 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	Largier Technologie	Indirect evidence	Vals Les Bains, FranceHQ checked Sep 22, 2026	51-200	31 contacts →
	Indirect evidence “LARGIER TECHNOLOGIE is a construction company based out of RUE DU VOLTOUR, VALS LES BAINS, France.” Source: RevenueBase Database · checked Sep 22, 2026
2	Aquapro IDF	Indirect evidence	Fontenay Le Fleury, FranceHQ checked Sep 22, 2026	11-50	31 contacts →
	Indirect evidence “AQUAPRO-IDF est une société spécialisée dans le domaine du traitement de l'eau et intervient essentiellement sur le secteur tertiaire et dans les ERP (Etablissement Recevant du…” Source: RevenueBase Database · checked Sep 22, 2026
3	Larcher Services	Partial evidence	Cormelles-le-royal, FranceHQ checked Sep 22, 2026	11-50	28 contacts →
	Partial evidence “LARCHER Services est spécialisé dans la maintenance, le dépannage et l'entretien de la plomberie, du chauffage et de la climatisation.” Source: RevenueBase Database · checked Sep 22, 2026
4	SESEM	Partial evidence	Saint-Denis, FranceHQ checked Sep 22, 2026	51-200	26 contacts →
	Partial evidence “La société SESEM, créée en 1965, est spécialisée dans la maintenance, l’entretien, le dépannage et les travaux pour assurer l’exploitation des équipements du cycle de l’eau.” Source: RevenueBase Database · checked Sep 22, 2026
5	Speyser Lucien ET CIE SA	Indirect evidence	Gerstheim, FranceHQ checked Sep 22, 2026	51-200	24 contacts →
	Indirect evidence “SPEYSER Lucien et Cie est spécialisé dans 3 grands domaines d’activités qui sont les travaux publics, le forage et le sanitaire-chauffage.” Source: RevenueBase Database · checked Sep 22, 2026
6	Assisteaux	Indirect evidence	Couhe - Valence En Poitou, FranceHQ checked Sep 22, 2026	11-50	23 contacts →
	Indirect evidence “Créée en 1972, ASSISTEAUX est une PME d’une vingtaine de personnes toutes mobilisées pour un seul objectif : “Satisfaire notre clientèle par des produits et des services de…” Source: RevenueBase Database · checked Sep 22, 2026
7	EPUR	Partial evidence	FranceHQ checked Sep 22, 2026	11-50	22 contacts →
	Partial evidence “Conception, construction et maintenance des stations d'épuration et des usines d'eau potable.” Source: RevenueBase Database · checked Sep 22, 2026
8	Qualleo Environnement	Indirect evidence	Colomiers, FranceHQ checked Sep 22, 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 22, 2026
9	Novalair Groupe	Strong evidence	Montigny-le-bretonneux, FranceHQ checked Sep 22, 2026	51-200	19 contacts →
	Strong evidence “NOVALAIR est spécialisée dans la maintenance et l’hygiénisation des réseaux eau et air (nettoyage des gaines et des systèmes de ventilation, entretien des tours aéroréfrigérantes…” Source: RevenueBase Database · checked Sep 22, 2026
10	EJ Énergies	Indirect evidence	Geispolsheim, FranceHQ checked Sep 22, 2026	51-200	17 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026
11	Espace Euro Services	Partial evidence	Créteil, FranceHQ checked Sep 22, 2026	11-50	16 contacts →
	Partial evidence “ENTRETENIR ET MAINTENIR LES POINTS D’EAU POUR ASSURER DES ECONOMIES Depuis 1989, Espace Euro Services assure la maintenance et l’entretien des robinetteries et mécanismes de…” Source: RevenueBase Database · checked Sep 22, 2026
12	Canatec Groupe	Indirect evidence	Saleilles, FranceHQ checked Sep 22, 2026	51-200	13 contacts →
	Indirect evidence “CANATEC est une entreprise spécialisée dans le diagnostic, la surveillance, l'entretien et la réparation de toutes les canalisations (eau potable, eaux usées, eaux pluviales…” Source: RevenueBase Database · checked Sep 22, 2026
13	Groupe Ttec	Indirect evidence	Mercurol-veaunes, FranceHQ checked Sep 22, 2026	51-200	12 contacts →
	Indirect evidence “Expert plombier chauffagiste depuis plus de 30 ans notre entreprise a su s’imposer en tant que professionnels auprès de notre clientèle, particuliers, professionnels industriels…” Source: RevenueBase Database · checked Sep 22, 2026
14	Kinetico France	Indirect evidence	Osny, FranceHQ checked Sep 22, 2026	11-50	12 contacts →
	Indirect evidence “Notre passion, améliorer votre quotidien en développant des solutions pour une eau meilleure".” Source: RevenueBase Database · checked Sep 22, 2026
15	AGESI	Partial evidence	Trémery, FranceHQ checked Sep 22, 2026	1-10	11 contacts →
	Partial evidence “AGESI est une entreprise spécialisée dans la maintenance et les travaux de ventilation, tuyauterie et traitement des eaux” Source: RevenueBase Database · checked Sep 22, 2026
16	Edgard Duval	Indirect evidence	Hondschoote, FranceHQ checked Sep 22, 2026	11-50	9 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026
17	Hydro Elec Services	Indirect evidence	Escorneboeuf, FranceHQ checked Sep 22, 2026	11-50	8 contacts →
	Indirect evidence “Qui sommes nous?” Source: RevenueBase Database · checked Sep 22, 2026
18	Ac2s Auvergne Chauffage Sanitaire Service	Indirect evidence	Clermont-ferrand, FranceHQ checked Sep 22, 2026	11-50	7 contacts →
	Indirect evidence “La société AC2S est implantée dans la région des Combrailles depuis 1968, depuis 2009, le siège social est situé sur la commune des Ancizes-Comps.” Source: RevenueBase Database · checked Sep 22, 2026
19	Alizé Clim	Indirect evidence	Gennevilliers, FranceHQ checked Sep 22, 2026	11-50	6 contacts →
	Indirect evidence “Alizé clim, votre expert en Climatisation, Ventilation et Plomberie.” Source: RevenueBase Database · checked Sep 22, 2026
20	Seihe MP	Indirect evidence	Saix, FranceHQ checked Sep 22, 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 22, 2026
21	Génie Fluide	Indirect evidence	Bouillargues, FranceHQ checked Sep 22, 2026	1-10	6 contacts →
	Indirect evidence “Génie Fluide est une entreprise de plomberie, génie climatique et dépannage basée à Bouillargues.” Source: RevenueBase Database · checked Sep 22, 2026
22	EX EAU	Partial evidence	Saint-ouen-l'aumône, FranceHQ checked Sep 22, 2026	11-50	6 contacts →
	Partial evidence “Ex Eau propose un large éventail de solutions du traitement de l'eau pour les entreprises d'exploitation de chauffage et un service de maintenance des équipements de traitement…” Source: RevenueBase Database · checked Sep 22, 2026
23	Servap	Partial evidence	Chilly Mazarin, FranceHQ checked Sep 22, 2026	11-50	6 contacts →
	Partial evidence “SERVAP est une société de maintenance des réseaux d'air et d'eau!” Source: RevenueBase Database · checked Sep 22, 2026
24	ETS Baugey	Indirect evidence	Nîmes, FranceHQ checked Sep 22, 2026	1-10	5 contacts →
	Indirect evidence “Entreprise de plomberie, chauffage, climatisation et d'électricité” Source: RevenueBase Database · checked Sep 22, 2026
25	ETS Chomat Arrosage	Indirect evidence	Saint Just Saint Rambert, FranceHQ checked Sep 22, 2026	11-50	5 contacts →
	Indirect evidence “Fourniture, pose et suivi de votre installation d'arrosage, pompage, récupération d'eaux, irrigation, micro station d’épuration.” Source: RevenueBase Database · checked Sep 22, 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 system maintenance companies. 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 system maintenance companies.
Partial evidence: Its own public description names part of water system maintenance companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name water system maintenance companies. 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 254 water system maintenance companies based in France

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Water system maintenance companies based in France at a glance

As of Sep 22, 2026

14.4%Verified-email coverage

4.4Average contacts per company

1-10Median size (employees)

2.0%Largest-city concentration · Paris

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

170

11-50

51-200

201-500

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 254 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 system maintenance companies, 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 system maintenance companies”. 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 system maintenance companies), 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 system maintenance companies, 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, 161 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 22, 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 water system maintenance companies, 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 system maintenance companies are there based in France?

RevenueBase identified 254 water system maintenance companies 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?

Largier Technologie, headquartered in Vals Les Bains, tops this list with the largest team on record.

Which city has the most water system maintenance companies?

Paris leads with 5 headquartered companies, followed by Caen (3) and Nantes (3).

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 161 verified decision-maker contacts tracked across these 254 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 22, 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.