Sewerage: highest published revenue
32 Belgian companies in the sector (NACE 3700) publish their revenue in recent accounts; here are the top 20. Aquafin leads with €636.9m (financial year 2025).
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 | Aquafin 2630 Aartselaar | €4.48bn | €636.9m | €1.11bn | 1,207.3 | 2025 |
| 2 | Societe Publique DE Gestion DE L'EAU 4800 Verviers | €4.06bn | €450.2m | €2.14bn | 65.0 | 2025 |
| 3 | in BW Association Intercommunale 1400 Nivelles | €576.1m | €135.7m | €219.5m | 488.0 | 2025 |
| 4 | Association Intercommunale Pour LE Demergement ET L'Epuration DES Communes DE LA Province DE Liege 4420 Saint-Nicolas | €454.1m | €78.7m | €140.4m | 284.4 | 2025 |
| 5 | Eloy Water 4140 Sprimont | €13.3m | €47.8m | €7.63m | 50.6 | 2025 |
| 6 | Roefs 2030 Antwerp | €32.2m | €39.2m | €10.8m | 95.8 | 2025 |
| 7 | Trevi 9050 Ghent | €25.6m | €36.2m | €9.92m | 129.0 | 2025 |
| 8 | TPF Utilities 1190 Forest | €20.1m | €32.3m | €8.19m | 118.6 | 2025 |
| 9 | Global Water & Energy 8200 Bruges | €21.8m | €29.4m | €1.81m | 28.4 | 2025 |
| 10 | IDELUX Eau 6700 Arlon | €115.5m | €26.3m | €50.6m | 101.2 | 2025 |
| 11 | Vidange Rary 6534 Thuin | €3.07m | €23.9m | €2.13m | 8.0 | 2025 |
| 12 | T.W.Z. 9940 Evergem | €108.6m | €22.3m | €82.4m | 54.8 | 2025 |
| 13 | Fluvius Riobra 3210 Lubbeek | €383.3m | €22.1m | €261.0m | — | 2025 |
| 14 | DE Bree Solutions 9990 Maldegem | €50.7m | €21.4m | €28.9m | 82.4 | 2025 |
| 15 | A.B. Maxi Cleaning 1930 Zaventem | €16.2m | €16.7m | €10.1m | 39.8 | 2025 |
| 16 | Geo-Groep 2440 Geel | €15.7m | €12.8m | €12.5m | 27.3 | 2025 |
| 17 | Liekens 2370 Arendonk | €8.58m | €11.3m | €2.02m | 56.9 | 2025 |
| 18 | Dekeyser Waste Services 8200 Bruges | €6.36m | €11.3m | €1.76m | 69.5 | 2025 |
| 19 | Lammertyn.NET 9120 Beveren-Kruibeke-Zwijndrecht | €5.83m | €10.0m | €3.11m | 57.4 | 2025 |
| 20 | VAN DE Velde Cleaning 2500 Lier | €5.98m | €9.29m | €1.17m | 18.5 | 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.
Frequently asked questions
Which company in Sewerage has the highest revenue?
Aquafin, with €636.9m in revenue (financial year 2025).
How many Sewerage companies publish their revenue?
32 out of 228, 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 11 Nov 2026.