A multi-criteria decision aiding approach for upgrading public sewerage systems and its application to the city of Brest
Résumé
Sewerage systems need to be improved in order to respect new regulatory frameworks which should lower the impacts on the environment and allow to prepare for increases of water discharge. In this paper, we propose a method to evaluate sewerage systems improvement scenarios through multiple criteria by using a Multi-Criteria Decision Aiding process. In doing so, we facilitate the integration of the different points of view of the various stakeholders and decision maker(s) in this evaluation. Our proposal also eases the process of the study, by proposing a clear, interactive and iterative business process, which allows all project actors to be integrated in an explicit way. Since the proposed solution is transparent, the final recommendation is more easily adopted by the different actors. We illustrate the genericity of the proposed approach through a real case study in the city of Brest in France and show how this work helped the project participants adopt the proposed recommendations.