Sewerage: highest revenue in Wallonia
As of 12 Nov 2026, 13 companies in Sewerage (NACE 37) in Wallonia publish their revenue in recent accounts (financial year 2025). The top 10 account for €768.7m, out of €769.4m for all of them; median revenue is €2.81m. Societe Publique de Gestion de l'Eau leads with €450.2m (financial year 2025).
Top 13 · Sewerage · Wallonia
Ranked by revenue published in the latest filed accounts (accounts less than 3 years old).
| # | Company | Total assets | Revenue | Equity | FTE | Year |
|---|---|---|---|---|---|---|
| 1 | Societe Publique de Gestion de l'Eau 4800 Verviers | €4.06bn | €450.2m | €2.14bn | 65.0 | 2025 |
| 2 | in BW Association Intercommunale 1400 Nivelles | €576.1m | €135.7m | €219.5m | 488.0 | 2025 |
| 3 | 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 |
| 4 | Eloy Water 4140 Sprimont | €13.3m | €47.8m | €7.63m | 50.6 | 2025 |
| 5 | IDELUX Eau 6700 Arlon | €115.5m | €26.3m | €50.6m | 101.2 | 2025 |
| 6 | Vidange Rary 6534 Thuin | €3.07m | €23.9m | €2.13m | 8.0 | 2025 |
| 7 | Exhaurea 7000 Mons | €13.1m | €2.81m | €11.1m | — | 2025 |
| 8 | ATB Belgique 4900 Spa | 407,081 € | €2.10m | 20,815 € | 1.9 | 2025 |
| 9 | Epur'Aubel 4880 Aubel | 649,547 € | 832,385 € | 84,660 € | — | 2025 |
| 10 | Vidange Gailly 1430 Rebecq | 302,495 € | 402,016 € | 50,371 € | — | 2025 |
| 11 | La Belle Vidange 6224 Fleurus | 461,178 € | 304,113 € | 46,300 € | 0.3 | 2025 |
| 12 | Vidange Libramontoise 6800 Libramont-Chevigny | 590,252 € | 267,382 € | 181,437 € | — | 2025 |
| 13 | Ases Belgium 4800 Verviers | 64,006 € | 83,829 € | 38,822 € | — | 2025 |
Ranking based on each company's own annual accounts (statutory, not consolidated): a subsidiary and its parent appear separately, and the ranking differs from lists based on consolidated group accounts. 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.
Sewerage across Belgium → All sectors · Wallonia →
Other sectors · Wallonia
- 01 Crop and animal production, hunting and related service activities240
- 02 Forestry and logging49
- 08 Other mining and quarrying37
- 10 Manufacture of food products214
- 11 Manufacture of beverages37
- 13 Manufacture of textiles29
- 16 Manufacture of wood and of products of wood and cork, except furniture; manufacture of articles of straw and plaiting materials61
- 17 Manufacture of paper and paper products15
- 18 Printing and reproduction of recorded media47
- 20 Manufacture of chemicals and chemical products80
- 21 Manufacture of basic pharmaceutical products and pharmaceutical preparations46
- 22 Manufacture of rubber and plastic products42
- 23 Manufacture of other non-metallic mineral products86
- 24 Manufacture of basic metals43
- 25 Manufacture of fabricated metal products, except machinery and equipment180
- 26 Manufacture of computer, electronic and optical products38
- 27 Manufacture of electrical equipment36
- 28 Manufacture of machinery and equipment n.e.c.71
- 29 Manufacture of motor vehicles, trailers and semi-trailers16
- 30 Manufacture of other transport equipment13
- 31 Manufacture of furniture26
- 32 Other manufacturing39
- 33 Repair, maintenance and installation of machinery and equipment53
- 35 Electricity, gas, steam and air conditioning supply64
- 38 Waste collection, recovery and disposal activities64
- 41 Construction of residential and non-residential buildings401
- 42 Civil engineering77
- 43 Specialised construction activities959
- 46 Wholesale trade927
- 47 Retail trade1,360
- 49 Land transport and transport via pipelines246
- 52 Warehousing, storage and support activities for transportation104
- 53 Postal and courier activities19
- 55 Accommodation117
- 56 Food and beverage service activities566
- 58 Publishing activities38
- 59 Motion picture, video and television programme production, sound recording and music publishing activities53
- 61 Telecommunication18
- 62 Computer programming, consultancy and related activities310
- 63 Computing infrastructure, data processing, hosting and other information service activities31
- 64 Financial service activities, except insurance and pension funding321
- 66 Activities auxiliary to financial services and insurance activities127
- 68 Real estate activities853
- 69 Legal and accounting activities276
- 70 Activities of head offices and management consultancy641
- 71 Architectural and engineering activities; technical testing and analysis267
- 72 Scientific research and development36
- 73 Activities of advertising, market research and public relations111
- 74 Other professional, scientific and technical activities57
- 75 Veterinary activities39
- 77 Rental and leasing activities59
- 78 Employment activities39
- 79 Travel agency, tour operator and other reservation service and related activities32
- 80 Investigation and security activities15
- 81 Services to buildings and landscape activities144
- 82 Office administrative, office support and other business support activities180
- 84 Public administration and defence; compulsory social security13
- 85 Education314
- 86 Human health activities580
- 87 Residential care activities201
- 88 Social work activities without accommodation174
- 90 Arts creation and performing arts activities95
- 91 Libraries, archives, museums and other cultural activities20
- 92 Gambling and betting activities12
- 93 Sports activities and amusement and recreation activities118
- 94 Activities of membership organisations100
- 95 Repair and maintenance of computers, personal and household goods, and motor vehicles and motorcycles130
- 96 Personal service activities172
Municipalities with the most companies in the sector · Wallonia
- 4020 Liège (Bressoux, Jupille-Sur-Meuse, Wandre)3
- 1300 Wavre (Limal)2
- 1380 Lasne (Couture-Saint-Germain, Lasne-Chapelle-Saint-Lambert, Maransart, …)2
- 1400 Nivelles (Monstreux)2
- 4000 Liège (Glain, Rocourt)2
- 4041 Herstal (Milmort, Vottem)2
- 4140 Sprimont (Dolembreux, Gomzé-Andoumont, Rouvreux)2
- 4800 Verviers (Ensival, Lambermont, Petit-Rechain, …)2
- 4850 Plombières (Montzen, Moresnet)2
- 5020 Namur (Champion, Daussoulx, Flawinne, …)2
- 5380 Fernelmont (Bierwart, Cortil-Wodon, Forville, …)2
- 1310 La Hulpe1
Frequently asked questions
Which company in Sewerage in Wallonia has the highest revenue?
Societe Publique de Gestion de l'Eau, with €450.2m of published revenue (financial year 2025).
Why are some companies missing?
Small companies (micro and abridged accounts) do not have to publish their revenue: only the 13 that publish it, out of 70 companies in the sector in the area, are ranked.
Why does this ranking differ from other lists?
It uses each company's annual accounts as filed with the National Bank, not consolidated group accounts. A holding, a subsidiary or a purchasing entity can therefore appear separately. Only companies whose latest accounts are less than 3 years old are ranked.
Analyse companies · Wallonia
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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.