Calalzo di Cadore Col Dei Cai Wastewater Treatment Plant, Veneto, Italy

Calalzo di Cadore Col Dei Cai is an advanced wastewater treatment plant located in Lagole, a frazione of Calalzo di Cadore in the Veneto region of northern Italy. The plant serves a population of approximately 4,115 people, reflecting its role in managing municipal wastewater for this Alpine community. The facility operates with advanced treatment processes, which go beyond the secondary treatment required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. With a designed capacity of 6,000 cubic meters per day and an actual discharge volume of about 815 cubic meters per day, the plant has ample capacity to handle current loads. As an Italian facility, it is subject to national regulations implementing the EU directive, ensuring high environmental standards. The treated effluent is discharged into local watercourses that feed into the Piave River, a major river in northeastern Italy that flows into the Adriatic Sea. The plant's advanced treatment helps protect the sensitive Alpine aquatic ecosystems and the downstream Piave basin, which supports diverse freshwater life and is used for irrigation and recreation.

The plant discharges into tributaries of the Piave River, which flows from the Dolomites to the Adriatic Sea near Venice. The Piave basin supports diverse aquatic habitats, including fish species like the marble trout, and is ecologically sensitive due to its Alpine headwaters and downstream lagoon systems. Advanced treatment helps minimize nutrient loading and protect water quality in this important watershed.