Construction of water projects: largest employers
55 Belgian companies in the sector (NACE 4291) report employees in recent accounts; here are the top 20. Jan De Nul leads with 1,840.7 FTE (financial year 2025).
Top 20
Ranked by average headcount (FTE) reported in the latest filed accounts (accounts less than 3 years old).
| # | Company | Total assets | Revenue | Equity | FTE | Year |
|---|---|---|---|---|---|---|
| 1 | Jan De Nul 9308 Aalst | €2.66bn | €1.73bn | €1.42bn | 1,840.7 | 2025 |
| 2 | DEME Dredging 2070 Beveren-Kruibeke-Zwijndrecht | €575.7m | €608.0m | €226.8m | 1,374.1 | 2025 |
| 3 | DEME Offshore BE 2070 Beveren-Kruibeke-Zwijndrecht | €1.50bn | €968.6m | €190.5m | 527.0 | 2025 |
| 4 | Baggerwerken Decloedt & Zoon 8400 Ostend | €366.4m | €159.3m | €234.6m | 230.2 | 2025 |
| 5 | HYE N.V. 2070 Beveren-Kruibeke-Zwijndrecht | €38.9m | €40.9m | €9.34m | 112.4 | 2025 |
| 6 | Balteau 4141 Sprimont | €22.8m | €50.2m | €8.09m | 103.6 | 2025 |
| 7 | De Brandt 9200 Dendermonde | €31.1m | €26.2m | €16.6m | 90.4 | 2025 |
| 8 | Environnement - Ecologie - Curage 5380 Fernelmont | €11.1m | €16.2m | €2.22m | 57.4 | 2025 |
| 9 | Veolia WTS Belgium 4040 Herstal | €37.4m | €12.5m | €3.04m | 47.0 | 2025 |
| 10 | Ghent Dredging 9810 Nazareth-De Pinte | €35.1m | €38.6m | €15.1m | 44.8 | 2025 |
| 11 | Desot 8904 Ypres | €4.38m | — | €1.94m | 31.5 | 2025 |
| 12 | Van Raak Louis 2381 Ravels | €16.2m | €13.8m | €4.16m | 30.7 | 2025 |
| 13 | Dredging International 2070 Beveren-Kruibeke-Zwijndrecht | €705.3m | €731.2m | €222.9m | 29.9 | 2025 |
| 14 | Willems 2290 Vorselaar | €13.1m | — | €6.34m | 29.6 | 2025 |
| 15 | Meuse Travaux 4520 Wanze | €5.02m | — | €2.91m | 28.3 | 2025 |
| 16 | Quintelier 9200 Dendermonde | €6.92m | — | €2.58m | 27.8 | 2025 |
| 17 | Acotec 9320 Aalst | €11.7m | €9.18m | €5.29m | 23.5 | 2025 |
| 18 | Backx 2960 Brecht | €6.43m | — | €2.35m | 20.8 | 2025 |
| 19 | Heyrman - de Roeck 9120 Beveren-Kruibeke-Zwijndrecht | €15.8m | €17.4m | €10.7m | 19.4 | 2025 |
| 20 | BESIX Environment 1200 Woluwe-Saint-Lambert | €8.40m | €14.7m | 556,352 € | 17.1 | 2025 |
Headcount reported by the company for all its sites: the jobs may be located elsewhere.
“—”: not published. Small companies (micro and abridged accounts) do not have to publish their revenue.
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Frequently asked questions
Who is the largest employer in Construction of water projects?
Jan De Nul, with 1,840.7 full-time equivalents reported (financial year 2025).
How many Construction of water projects companies report employees?
55 out of 143, in accounts less than 3 years old.
Analyse companies in Construction of water projects
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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.