Framework agreement for sewer network asset management through maintenance and renovation works

Summary

The tender concerns the maintenance and renovation of existing sewer network structures in municipalities participating in a project in Wallonia, Belgium. The works include hydro-cleaning of inspection chambers, repair and renovation of masonry, wall injections, cementing, renovation of chamber walls and channels, replacement of covers, ladders and rungs, and verification of the works by a visual inspection similar to a 3D scan. The tender is divided into three geographical lots: lot 1 covers an estimated 28 to 113 inspection chambers, lot 2 covers 39 to 156 chambers, and lot 3 covers 29 to 115 chambers. This is a framework agreement under which up to three bidders may be selected for each lot; subsequent orders will be awarded through a cascade mechanism without reopening competition. The tender submission deadline is 18 September 2026 at 11:00.