Services of cleaning, unclogging and cleaning of septic tanks, wells, gutters, pipes, oil separators, degreasers, sandblasters, ... in all stations and buildings of B-ST divided into 11 lots:
- lot 1: Antwerp
- lot 2: Limburg
- lot 3: Ghent
- lot 4: Bruges
- Lot 5: Kortrijk
- lot 6: Brussels
- lot 7: Liège
- lot 8: Namur
- lot 9: Libramont
- lot 10: Charleroi
- lot 11: Mons
Services of cleaning, unclogging and cleaning of septic tanks, wells, gutters, pipes, oil separators, degreasers, sandblasters, ... in all stations and buildings of B-ST, divided into 11 lots.