Concession de service public pour la gestion de l'assainissement sur le territoire de GPSO
Grand Paris Seine Ouest
Hauts-de-Seine
04 Nov 2026
16 Sept 2026
The essentials, in thirty seconds
Read straight from the notice the buyer published. It is not the consultation rules, which may add requirements, but it is enough to decide without downloading the file.
- Questions to the buyer until 23 October 2026, i.e. 27 days.
- Bids due on 4 November 2026, in 40 days.
- A single lot: the contract is taken whole or not at all.
- Estimated value: 42 000 000 €.
- environmental criteria are scored. That is where a local firm earns points a large group does not.
- Performance starts on 1 January 2028.
The notice does not state : the score breakdown (aucune pondération chiffrée dans l'avis), the contract duration. These are in the consultation rules inside the tender file.
judith.comminsoli@seineouest.fr 0146295500
How many rivals you actually face
on "Assainissement" contracts, the median is 4 bids per lot; 41% of lots get three or fewer, and only 4% get more than ten.
33% of the bids come from SMEs.
Measured on 27 awarded lots that publish their statistics. 53% of buyers do; the rest say nothing, either way.
Données publiques officielles réutilisées sous licence ouverte, avec mention de la source et de la date. Reference 26-88930.