Pollutant Emission from Sewer Systems into Lago Maggiore-Preliminary Survey

A project for quali-quantitative prospection of the impact of sewage into the Lago Maggiore, on the Italian-Swiss border, is promoted by the International Commission for the Protection of the Italo-Swiss waters, and set up by the consulting firm Hydrodata(Torino, Italy). The purpose is to control the impact of Combined Sewer Overflow(CSO), due to domestic sewage, on the receiving water, in this case the Lago Maggiore, by the survey and control of a catchment both through experimental research and numerical modelling. Within the study a link is established between field measurements, fully dynamic simulations, and hydrologic simulations. The initial phase of the project being terminated, a representative catchment has been chosen, two models have been retained, in casu the Danish model MOUSE, and the Belgian model GLAS, and necessary data acquisition has been carried out.