Verona-Brescia Lakeside Sewage System Connects Watershed via 134 km Pipeline

The sewer collection system serves nearly the entire watershed of the lakeside region of Verona and Brescia, with some justified exceptions (Limone, Tremosine, and Tignale), and is based on two sub-systems of collector pipelines that run along both shores, ultimately converging at the Peschiera municipal wastewater treatment plant.

There are a total of 134 kilometers of collectors, including 19 sub-lacustrine sections, served by 53 lift stations distributed along the route, designed to gain elevation for the sewage and allow long stretches of natural downhill flow. In profile, the system appears as a sawtooth pattern.

The most significant pumping station is undoubtedly the one in Toscolano, on the Brescia side, which energizes the sewage to cross eight kilometers of lake through a double pipeline reaching depths of 250 meters.

The sewage from the Brescia side collector segment, from Gargnano to Salò, directed to Brancolino in the municipality of Torri, meets the southern terminus of the Veronese collector of the upper lake, coming from Malcesine.

Connection between the systems and secondary collectors

The system, at this point still mixed, crosses through Punta San Vigilio in a tunnel, and from there, via another sub-lacustrine stretch, finally connects at Cisano on the lower lake pipeline coming from Garda and heading towards Peschiera.

The system is completed with the Valtenesi collector, branching into the Brescia inland area, which then converges in Desenzano into the lower lake pipeline directed to Peschiera.

Eighteen emergency pipelines, connected to overflow spillways, discharge into the lake and at depth the pre-treated wastewater in case of malfunctions on the main treatment plant.