Thonon Agglomération recently took over responsibility for wastewater treatment and will be operating the system under direct management
from 2022.
The agglomeration’s understanding of the rainwater networks is highly heterogeneous and incomplete.,The first step is therefore to draw up complete, standardised plans so that a strategy can be established for managing the networks and structures over the next 20 years.
The aim is to limit the malfunctions currently identified (overloading, overflows) and to limit the impact of pollution on the natural environment
(watercourses and Lake Geneva, the final outlet). The study includes an assessment of the operation of existing stormwater systems in order to propose efficient alternatives to piping.