Nangis wastewater treatment plant: storage basin construction and improved sludge treatment line reliability

Summary

The tender covers the design and construction of facilities needed to bring the wastewater system at the Nangis treatment plant into compliance with applicable requirements. The works aim to build a storage basin, improve the reliability of the sludge treatment line and improve the plant’s hydraulic performance, reducing discharges into the natural environment and strengthening the system’s resilience during wet weather. Bids must be submitted electronically by 6 November 2026 at 17:00. Variants are not permitted, and bids must remain valid for four months.