Public service concession for wastewater management across the GPSO territory

Summary

This is a public service concession for managing the wastewater and sewerage service across the Grand Paris Seine Ouest territory, covering Boulogne-Billancourt, Chaville, Issy-les-Moulineaux, Marnes-la-Coquette, Meudon, Sèvres, Vanves and Ville-d’Avray. Operations are planned from 1 January 2028 to 31 December 2033 for six years. The estimated contract value is EUR 42,000,000 excluding VAT, including an annual investment programme of approximately EUR 4,500,000 excluding VAT. Candidates must submit their application and tender together electronically through the Maximilien platform by 4 November 2026 at 17:00. Electronic signatures are not required at submission. The offer will be assessed on the coherence and environmental performance of the works and asset-management programme, financial and contractual robustness, and the technical value of the operation, including organisation, maintenance, governance and innovation.