Water collection, treatment and supply: highest published revenue
20 Belgian companies in the sector (NACE 36) publish their revenue in recent accounts; here are the top 20. Vlaamse Maatschappij voor Watervoorziening leads with €838.3m (financial year 2024).
Top 20
Ranked by revenue published in the latest filed accounts (accounts less than 3 years old).
| # | Company | Total assets | Revenue | Equity | FTE | Year |
|---|---|---|---|---|---|---|
| 1 | Vlaamse Maatschappij voor Watervoorziening 1030 Schaerbeek | €2.25bn | €838.3m | €1.26bn | 1,594.8 | 2024 |
| 2 | Societe Wallonne des Eaux 4800 Verviers | €2.56bn | €631.3m | €1.52bn | 1,318.2 | 2025 |
| 3 | Farys 9000 Ghent | €3.81bn | €576.9m | €2.04bn | 974.0 | 2025 |
| 4 | Pidpa 2280 Grobbendonk | €1.59bn | €402.7m | €859.3m | 715.6 | 2025 |
| 5 | Vivaqua 1000 Brussels | €1.76bn | €356.0m | €569.7m | 1,260.3 | 2025 |
| 6 | Water-Link 2018 Antwerp | €571.5m | €254.5m | €313.7m | 481.0 | 2025 |
| 7 | Compagnie Intercommunale Liégeoise des Eaux 4031 Liège | €460.1m | €159.7m | €366.6m | 393.7 | 2025 |
| 8 | Aquiris 1130 Brussels | €82.3m | €54.2m | €7.59m | 66.8 | 2024 |
| 9 | Intercommunale namuroise de Services publics 5100 Namur | €185.8m | €49.1m | €55.2m | 268.8 | 2025 |
| 10 | Hydria 1000 Brussels | €300.6m | €45.0m | €178.7m | 67.2 | 2025 |
| 11 | Intercommunale Waterleidingsmaatschappij van Veurne Ambacht 8670 Koksijde | €99.1m | €26.5m | €52.9m | 42.8 | 2025 |
| 12 | Autonoom Gemeentebedrijf "Stadsontwikkeling Knokke-Heist" 8300 Knokke-Heist | €146.7m | €23.5m | €50.3m | 41.2 | 2025 |
| 13 | Pollet Water Group 8680 Koekelare | €215.3m | €22.5m | €104.0m | 4.7 | 2025 |
| 14 | Intercommunale d'Etude et de Gestion 7700 Mouscron | €190.1m | €19.7m | €106.2m | 87.5 | 2025 |
| 15 | Aqualex 8540 Deerlijk | €28.8m | €19.0m | €4.40m | 82.9 | 2025 |
| 16 | Evides Antwerpen Water 2630 Aartselaar | €48.6m | €13.8m | €9.08m | — | 2025 |
| 17 | BWT Belgium 1930 Zaventem | €6.96m | €13.5m | −978,372 € | 59.0 | 2024 |
| 18 | Mainvault 4800 Verviers | €25.2m | €7.61m | €23.5m | — | 2025 |
| 19 | Association Intercommunale des Eaux de la Molignée 5640 Mettet | €20.2m | €6.30m | €13.6m | 22.8 | 2025 |
| 20 | Intercommunale de Distribution d'Eau de Nandrin - Tinlot et Environs 4550 Nandrin | €2.67m | €1.08m | €2.05m | 5.0 | 2025 |
These are the revenue figures published in the annual accounts. Small companies (micro and abridged accounts) do not have to publish theirs: they do not appear in this ranking.
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Frequently asked questions
Which company in Water collection, treatment and supply has the highest revenue?
Vlaamse Maatschappij voor Watervoorziening, with €838.3m in revenue (financial year 2024).
How many Water collection, treatment and supply companies publish their revenue?
20 out of 71, in accounts less than 3 years old. Small companies (micro and abridged accounts) are not required to publish it.
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Open the full file →Active companies (legal entities) that have filed at least one set of annual accounts, based on the Crossroads Bank for Enterprises and the National Bank of Belgium. The sector is the main activity in the register; the municipality is that of the registered office. Data updated on 12 Nov 2026.