IDL_BUTA Wastewater Treatment Plant, Castelluccio, Toscana

IDL_BUTA is an advanced wastewater treatment plant located in Castelluccio, a locality within the municipality of Capolona in the province of Arezzo, Toscana, Italy. The plant serves a population of approximately 4,526 and has a designed capacity of 7,000 cubic meters per day, with a current discharge volume of about 896 cubic meters per day. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants, ensuring high-quality effluent. As an Italian facility, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates appropriate treatment levels based on the sensitivity of receiving waters and population size. The treated effluent is discharged into the local water network, which ultimately drains into the Arno River. The Arno flows through Tuscany and into the Tyrrhenian Sea near Pisa. The plant's advanced treatment helps protect the Arno's water quality and supports the ecological health of the river and its downstream environments.

The plant discharges into the Arno River basin, which flows through Tuscany to the Tyrrhenian Sea. The Arno supports diverse aquatic life and is used for irrigation and recreation. Advanced treatment at IDL_BUTA reduces nutrient loading, helping to prevent eutrophication in downstream waters and the coastal zone.