Morcote Wastewater Treatment Plant, Ticino, Switzerland

The Morcote wastewater treatment plant is located in the municipality of Morcote, in the canton of Ticino, Switzerland. It serves a population of approximately 1,200 residents, making it a small-scale facility typical of lakeside communities in the region. The plant is situated along Riva di Pilastri, near the shores of Lake Lugano. The plant provides secondary treatment, which is the standard biological treatment required under Swiss water protection legislation. Swiss regulations, aligned with the EU Urban Waste Water Treatment Directive, mandate secondary treatment for agglomerations of this size. The facility has a design capacity of 2,000 m³ per day and currently treats an average daily flow of 543 m³, indicating ample reserve capacity for future growth or seasonal variations. Treated effluent from the plant is discharged into Lake Lugano, a subalpine lake that straddles the border between Switzerland and Italy. The lake drains via the Tresa River into Lake Maggiore, which ultimately flows into the Po River and the Adriatic Sea. Protecting Lake Lugano's water quality is critical for local biodiversity, tourism, and drinking water supplies for surrounding communities.

The plant discharges into Lake Lugano, a deep subalpine lake that supports diverse aquatic life and is a key resource for recreation and drinking water. The lake's outflow, the Tresa River, connects to Lake Maggiore, part of the Po River basin that drains into the Adriatic Sea. Nutrient loading from wastewater can contribute to eutrophication, so secondary treatment helps control phosphorus and nitrogen levels in this sensitive watershed.