Company lists · Data refreshed September 2026

Top 25 Municipal wastewater treatment companies based in Belgium

Name: Municipal wastewater treatment companies based in Belgium
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 42 companies tracked

RevenueBase identified 42 municipal wastewater treatment companies headquartered in Belgium as of September 2026 and tracks 3,099 professional contacts across them, including 1,931 with verified work emails. Aartselaar is the largest hub.

This list covers municipal wastewater treatment companies headquartered in Belgium, 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 20, 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 20, 2026 86% judged on-target in blind review

42Companies

3,099Contacts tracked

1,931Verified emails

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The 25 largest municipal wastewater treatment companies based in Belgium

Ranked by team size

Top 25 of 42 municipal wastewater treatment companies based in Belgium, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to municipal wastewater treatment 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	Aquafin	Indirect evidence	Aartselaar, BelgiumHQ checked Sep 20, 2026	1,001-5,000	920 contacts →
	Indirect evidence “Aquafin is in 1990 opgericht door het Vlaamse Gewest om de rioolwaterzuiveringsinfrastructuur in Vlaanderen verder uit te bouwen, te exploiteren en te financieren.” Source: RevenueBase Database · checked Sep 20, 2026
2	DE Watergroep	Indirect evidence	Brussel, BelgiumHQ checked Sep 20, 2026	1,001-5,000	728 contacts →
	Indirect evidence “De Watergroep is het grootste drinkwaterbedrijf in Vlaanderen.” Source: RevenueBase Database · checked Sep 20, 2026
3	PIDPA	Indirect evidence	Antwerpen, BelgiumHQ checked Sep 20, 2026	501-1,000	349 contacts →
	Indirect evidence “Pidpa, als integrale waterpartner, biedt een ruime waaier van producten en diensten aan: Drinkwatervoorziening In 64 gemeenten van de provincie Antwerpen staat Pidpa garant voor…” Source: RevenueBase Database · checked Sep 20, 2026
4	Inasep	Indirect evidence	Naninne, BelgiumHQ checked Sep 20, 2026	201-500	128 contacts →
	Indirect evidence “Société coopérative à responsabilité limitée, créée en 1978, l'Intercommunale Namuroise de Services Publics (INASEP) regroupe 38 communes de la Province de Namur, toutes affiliées…” Source: RevenueBase Database · checked Sep 20, 2026
5	Ekopak Sustainable Water	Strong evidence	Deinze, BelgiumHQ checked Sep 20, 2026	201-500	125 contacts →
	Strong evidence “Ekopak provides innovative solutions for industrial water treatment and wastewater treatment.” Source: RevenueBase Database · checked Sep 20, 2026
6	Global Water & Energy	Strong evidence	Bruges, BelgiumHQ checked Sep 20, 2026	51-200	111 contacts →
	Strong evidence “GLOBAL WATER & ENERGY (GWE) is a full solution provider to the global marketplace for industrial water and wastewater treatment, water reuse, biomass digestion, sludge, and slurry…” Source: RevenueBase Database · checked Sep 20, 2026
7	Cebedeau	Indirect evidence	Liège, BelgiumHQ checked Sep 20, 2026	11-50	35 contacts →
	Indirect evidence “Le CEBEDEAU est spécialisé dans la gestion et le traitement (par voie biologique et/ou physicochimique) des eaux usées, tant domestiques qu’industrielles.” Source: RevenueBase Database · checked Sep 20, 2026
8	Veolia I Water Tech Belgium	Indirect evidence	Tienen, BelgiumHQ checked Sep 20, 2026	11-50	34 contacts →
	Indirect evidence “As the global water technology experts, we deliver on both performance and sustainability without compromise.” Source: RevenueBase Database · checked Sep 20, 2026
9	Exelio	Indirect evidence	Sprimont, BelgiumHQ checked Sep 20, 2026	11-50	31 contacts →
	Indirect evidence “Notre métier En tant qu'ensemblier, nous fournissons des installations techniques 'clés en main'.” Source: RevenueBase Database · checked Sep 20, 2026
10	Azulatis N.V	Indirect evidence	Deerlijk, BelgiumHQ checked Sep 20, 2026	11-50	28 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
11	Aquaprox Benelux	Indirect evidence	Sint-katelijne-waver, BelgiumHQ checked Sep 20, 2026	11-50	20 contacts →
	Indirect evidence “Welcome to the AQUAPROX Benelux page!” Source: RevenueBase Database · checked Sep 20, 2026
12	Aaqua NV	Indirect evidence	Sint-katelijne Waver, BelgiumHQ checked Sep 20, 2026	11-50	20 contacts →
	Indirect evidence “Welcome to the AAQUA page!” Source: RevenueBase Database · checked Sep 20, 2026
13	Energipole	Partial evidence	Brussels, BelgiumHQ checked Sep 20, 2026	201-500	18 contacts →
	Partial evidence “ENERGIPOLE offers its industrial and community customers innovative and tailor-made solutions for the design, construction and operation of waste treatment and recovery tools via…” Source: RevenueBase Database · checked Sep 20, 2026
14	NUORO	Strong evidence	Heist-op-den-berg, BelgiumHQ checked Sep 20, 2026	11-50	17 contacts →
	Strong evidence “Nuoro specializes in advanced wastewater treatment, water reuse technologies and bio-energy.” Source: RevenueBase Database · checked Sep 20, 2026
15	Aquaduin	Indirect evidence	Koksijde, BelgiumHQ checked Sep 20, 2026	11-50	17 contacts →
	Indirect evidence “Aquaduin (IWVA ov) verzorgt de productie en distributie aan de gemeenten Alveringem, De Panne, Koksijde, Nieuwpoort, Veurne en enkele deelgemeenten van Diksmuide (Lampernisse…” Source: RevenueBase Database · checked Sep 20, 2026
16	Aquaturbo - SFA Enviro	Indirect evidence	Halle, BelgiumHQ checked Sep 20, 2026	11-50	7 contacts →
	Indirect evidence “AQUATURBO™, Concepteur et Fabricant d'équipements de traitement des eaux usées.” Source: RevenueBase Database · checked Sep 20, 2026
17	Ateliers DE Construction DE Herstal SA	Indirect evidence	Herstal, BelgiumHQ checked Sep 20, 2026	11-50	7 contacts →
	Indirect evidence “Ateliers de Construction de Herstal SA is a mechanical construction company based out of En Hayeneux 148, HERSTAL, Belgium.” Source: RevenueBase Database · checked Sep 20, 2026
18	Hydropure Watermanagement	Indirect evidence	Jabbeke, BelgiumHQ checked Sep 20, 2026	1-10	6 contacts →
	Indirect evidence “Hoewel drinkwater nog steeds een betaalbare grondstof is in vergelijking met hoe waardevol en schaars het wordt, is de trend van stijgende drinkwaterprijzen een oproep om uw…” Source: RevenueBase Database · checked Sep 20, 2026
19	Novotec BV	Partial evidence	Merelbeke, BelgiumHQ checked Sep 20, 2026	11-50	5 contacts →
	Partial evidence “Novotec bv designs, constructs and realizes projects in waste water treatment.” Source: RevenueBase Database · checked Sep 20, 2026
20	Vogelsang Belgium NV	Indirect evidence	Brugge, BelgiumHQ checked Sep 20, 2026	11-50	5 contacts →
	Indirect evidence “Ruim dertig jaar fabriceren, distribueren en adviseren wij pompen en pompsystemen,(mest)mixsystemen, versnijders en separatoren van verschillende merken voor de behandeling en…” Source: RevenueBase Database · checked Sep 20, 2026
21	Nature Solutions BE	Indirect evidence	Duffel, BelgiumHQ checked Sep 20, 2026	1-10	5 contacts →
	Indirect evidence “Nature Solutions begeleidt ondernemingen die het volledige waterbeleid van hun bedrijfsgebouwen en -terreinen willen optimaliseren.” Source: RevenueBase Database · checked Sep 20, 2026
22	Metaalconstructie Leuridan BV	Partial evidence	Zwevezele, BelgiumHQ checked Sep 20, 2026	1-10	5 contacts →
	Partial evidence “Metaalconstructie Leuridan BV located in Zwevezele (Belgium) designs and builds equipement, machinery for water treatment plants: coarse and fine screens, trash rack screen…” Source: RevenueBase Database · checked Sep 20, 2026
23	hellowater.be	Indirect evidence	Zwevegem, BelgiumHQ checked Sep 20, 2026	1-10	3 contacts →
	Indirect evidence “Wil jij een bruisende gemeente?” Source: RevenueBase Database · checked Sep 20, 2026
24	Segorex	Indirect evidence	Beerse, BelgiumHQ checked Sep 20, 2026	1-10	3 contacts →
	Indirect evidence “Waterbehandeling-> Waterontharders -> Ontijzeraars -> Filters Regenwaterrecuperatie -> Pompinstallaties -> Bladfilters -> Regenwaterputten Afvalwaterbehandeling -> Opvoerstations…” Source: RevenueBase Database · checked Sep 20, 2026
25	Vesitechnics	Indirect evidence	Haacht, BelgiumHQ checked Sep 20, 2026	1-10	3 contacts →
	Indirect evidence “VesiTechnics staat bedrijven bij in de volgende domeinen - Afvalwaterzuivering in al zijn aspecten (fysisch, chemisch, aeroob, anaeroob, …)- Vergisting van afvalstromen - Slib en…” Source: RevenueBase Database · checked Sep 20, 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: municipal wastewater treatment 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 municipal wastewater treatment companies.
Partial evidence: Its own public description names part of municipal wastewater treatment companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name municipal wastewater treatment 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 42 municipal wastewater treatment companies based in Belgium

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Municipal wastewater treatment companies based in Belgium at a glance

As of Sep 20, 2026

62.3%Verified-email coverage

73.8Average contacts per company

11-50Median size (employees)

4.8%Largest-city concentration · Aartselaar

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured worldwide rather than for Belgium, so it is reported there. Company counts and contact totals on this page are exact for Belgium, over 42 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 municipal wastewater treatment 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 Belgium whose own description of what they do matches “municipal wastewater treatment 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 municipal wastewater treatment 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 municipal wastewater treatment companies, and records with no verified work email. Companies headquartered outside Belgium 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, 1,931 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 20, 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 municipal wastewater treatment 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 municipal wastewater treatment companies are there based in Belgium?

RevenueBase identified 42 municipal wastewater treatment companies headquartered in Belgium 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?

Aquafin, headquartered in Aartselaar, tops this list with the largest team on record.

Which city has the most municipal wastewater treatment companies?

Aartselaar leads with 2 headquartered companies, followed by Antwerpen (2) and Brugge (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 1,931 verified decision-maker contacts tracked across these 42 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 20, 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.