LUSON Wastewater Treatment Plant, Lüsen - Luson, Trentino-Alto Adige

The LUSON wastewater treatment plant is located in the municipality of Lüsen - Luson, within the Eisacktal - Valle Isarco valley in the Trentino-Alto Adige/Südtirol region of northern Italy. This facility serves a population of 2,130 residents and is part of the region's municipal wastewater infrastructure, operating under Italian regulations that transpose the EU Urban Waste Water Treatment Directive (91/271/EEC). The plant provides secondary treatment, which is the standard level required by the EU directive for agglomerations of this size (2,000-10,000 population equivalent) discharging into freshwater bodies. The designed capacity is 2,400 cubic meters per day, and the current discharge volume is approximately 422 cubic meters per day, indicating the plant operates well below its design capacity. The treated effluent is discharged into local watercourses within the Eisack River basin, which flows into the Adige River and ultimately reaches the Adriatic Sea. The plant plays a key role in protecting the water quality of the Eisack Valley, a region known for its alpine environment and tourism, by reducing organic pollutants and nutrients before discharge.

The LUSON plant discharges into the Eisack River (Isarco), a tributary of the Adige River, which flows south through the Trentino-Alto Adige region and empties into the Adriatic Sea near Venice. The Eisack Valley is an ecologically sensitive alpine area that supports diverse aquatic life, including fish species such as brown trout. The plant's secondary treatment helps maintain water quality in this river system, which is important for both local biodiversity and downstream ecosystems in the Adige basin.