Company lists · Data refreshed September 2026

Top 25 Wastewater engineering companies based in France

Name: Wastewater engineering companies based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 362 companies tracked

RevenueBase identified 362 wastewater engineering companies headquartered in France as of September 2026 and tracks 30,958 professional contacts across them, including 9,121 with verified work emails. Paris is the largest hub.

This list covers wastewater engineering 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 19, 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 19, 2026 86% judged on-target in blind review

362Companies

30,958Contacts tracked

9,121Verified emails

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The 25 largest wastewater engineering companies based in France

Ranked by team size

Top 25 of 362 wastewater engineering companies based in France, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to wastewater engineering 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	SUEZ	Indirect evidence	Paris, FranceHQ checked Sep 19, 2026	10001+	21,549 contacts →
	Indirect 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 19, 2026
2	Antea Group - France	Indirect evidence	Olivet, FranceHQ checked Sep 19, 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 19, 2026
3	EHTP	Indirect evidence	Saint-etienne-du-grès, FranceHQ checked Sep 19, 2026	501-1,000	264 contacts →
	Indirect evidence “Nous maîtrisons l’ensemble des techniques du secteur de la canalisation : collecte, transport et traitement des eaux usées, renouvellement et interconnexion des conduites AEP…” Source: RevenueBase Database · checked Sep 19, 2026
4	Setec Hydratec	Indirect evidence	Paris, FranceHQ checked Sep 19, 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 19, 2026
5	OVIVE	Partial evidence	Seclin, FranceHQ checked Sep 19, 2026	51-200	155 contacts →
	Partial 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 19, 2026
6	Aqualter	Indirect evidence	Chartres, FranceHQ checked Sep 19, 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 19, 2026
7	EMO	Partial evidence	Noyal Sur Vilaine, FranceHQ checked Sep 19, 2026	51-200	113 contacts →
	Partial evidence “Global solutions for water and sludge treatment:#wastewater, drinking water, industrial #effluents.” Source: RevenueBase Database · checked Sep 19, 2026
8	Sources	Indirect evidence	Nanterre, FranceHQ checked Sep 19, 2026	51-200	103 contacts →
	Indirect evidence “Sources est une société Anonyme, indépendante, prospère, en croissance constante et maîtrisée.” Source: RevenueBase Database · checked Sep 19, 2026
9	Odyssee Environnement Water Treatment	Indirect evidence	Requeil, FranceHQ checked Sep 19, 2026	51-200	101 contacts →
	Indirect 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 19, 2026
10	Aquaprox Industries	Indirect evidence	Levallois Perret, FranceHQ checked Sep 19, 2026	51-200	74 contacts →
	Indirect evidence “Bienvenue sur la page AQUAPROX Industries!” Source: RevenueBase Database · checked Sep 19, 2026
11	Graf France	Indirect evidence	Dachstein, FranceHQ checked Sep 19, 2026	51-200	65 contacts →
	Indirect evidence “Fabricant de solutions pour la gestion des eaux pluviales et le traitement des eaux usées” Source: RevenueBase Database · checked Sep 19, 2026
12	SIMOP	Partial evidence	Sainte-mere-eglise, FranceHQ checked Sep 19, 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 19, 2026
13	Nijhuis Saur Industries France	Indirect evidence	Issy-les-moulineaux, FranceHQ checked Sep 19, 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 19, 2026
14	Prolog Ingenierie	Partial evidence	Paris, FranceHQ checked Sep 19, 2026	51-200	56 contacts →
	Partial 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 19, 2026
15	Orea Acvv	Indirect evidence	Feyzin, FranceHQ checked Sep 19, 2026	51-200	52 contacts →
	Indirect evidence “OREA ACVV is a company based out of France.” Source: RevenueBase Database · checked Sep 19, 2026
16	Forafrance	Indirect evidence	La Mézière, FranceHQ checked Sep 19, 2026	11-50	46 contacts →
	Indirect evidence “Depuis plusieurs décennies FORAFRANCE conçoit, intègre et exploite les installations de traitement des eaux.” Source: RevenueBase Database · checked Sep 19, 2026
17	Amodiag Environnement	Indirect evidence	Prouvy, FranceHQ checked Sep 19, 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 19, 2026
18	Groupe Orizon	Indirect evidence	Gimont, FranceHQ checked Sep 19, 2026	51-200	39 contacts →
	Indirect evidence “Orizon propose une offre de service innovante et maîtrisée sur toute la chaîne de traitement de l’eau : produits, matériels, services.” Source: RevenueBase Database · checked Sep 19, 2026
19	Humbert	Indirect evidence	Trélazé, FranceHQ checked Sep 19, 2026	51-200	38 contacts →
	Indirect evidence “Technicité et innovation pour vos projets réseaux : Depuis sa création en 1947, Humbert conçoit et réalise la pose et la réhabilitation des réseaux d'eau, d'assainissement et…” Source: RevenueBase Database · checked Sep 19, 2026
20	Balestra Travaux Publics	Indirect evidence	Avesnes Le Comte, FranceHQ checked Sep 19, 2026	51-200	37 contacts →
	Indirect evidence “BALESTRA Travaux Publics is a construction company based out of 124 RUE DE LA POSTE, AVESNES LE COMTE, France.” Source: RevenueBase Database · checked Sep 19, 2026
21	Biotrade France	Indirect evidence	Portet-sur-garonne, FranceHQ checked Sep 19, 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 19, 2026
22	Tresch Traitement DES Eaux	Indirect evidence	Chassieu, FranceHQ checked Sep 19, 2026	11-50	31 contacts →
	Indirect evidence “Created in 1981, TRESCH TRAITEMENT DES EAUX is a French company which provides services, products and equipment for industrial water treatment.” Source: RevenueBase Database · checked Sep 19, 2026
23	Aloes Traitement DES Eaux	Indirect evidence	Seclin, FranceHQ checked Sep 19, 2026	11-50	27 contacts →
	Indirect evidence “ALOES TRAITEMENT DES EAUX is a wholesale company based out of ZONE A 12 RUE DE LA POINTE, SECLIN, France.” Source: RevenueBase Database · checked Sep 19, 2026
24	Sagéau	Indirect evidence	Landiras, FranceHQ checked Sep 19, 2026	11-50	27 contacts →
	Indirect evidence “Sagéau – Réseau national de franchises spécialisé en assainissement non collectif et gestion d'eau de pluie.” Source: RevenueBase Database · checked Sep 19, 2026
25	SESEM	Indirect evidence	Saint-Denis, FranceHQ checked Sep 19, 2026	51-200	26 contacts →
	Indirect 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 19, 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: wastewater engineering 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 wastewater engineering companies.
Partial evidence: Its own public description names part of wastewater engineering companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name wastewater engineering 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 362 wastewater engineering companies based in France

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Wastewater engineering companies based in France at a glance

As of Sep 19, 2026

29.5%Verified-email coverage

85.5Average contacts per company

1-10Median size (employees)

2.8%Largest-city concentration · Paris

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

199

11-50

116

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 362 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 wastewater engineering 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 “wastewater engineering 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 wastewater engineering 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 wastewater engineering 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, 9,121 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 19, 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 wastewater engineering 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 wastewater engineering companies are there based in France?

RevenueBase identified 362 wastewater engineering 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?

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

Which city has the most wastewater engineering companies?

Paris leads with 10 headquartered companies, followed by Montpellier (4) and Seclin (4).

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 9,121 verified decision-maker contacts tracked across these 362 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 19, 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.