IDL_CALAVORNO_VOLTA_DELLA_LUNA Wastewater Treatment Plant, Calavorno, Toscana

IDL_CALAVORNO_VOLTA_DELLA_LUNA is an advanced wastewater treatment plant located in Calavorno, a frazione of Coreglia Antelminelli in the province of Lucca, Toscana, Italy. The plant serves a population of approximately 3,020 people, placing it in the small agglomeration category under Italian and EU regulations. Its designed capacity is 3,300 m³/day, with an actual discharge volume of 597.85 m³/day, indicating significant spare capacity. The plant employs advanced treatment processes, which go beyond the secondary treatment standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. Advanced treatment typically includes nutrient removal (nitrogen and phosphorus) and disinfection, ensuring high-quality effluent. The plant operates under Italy's national implementation of the directive, which mandates compliance with discharge limits for sensitive areas. The treated effluent is discharged into the local water system, which ultimately drains into the Serchio River basin. The Serchio River flows through the Garfagnana region and the city of Lucca before entering the Ligurian Sea near Viareggio. The plant's advanced treatment helps protect the ecological quality of the Serchio River and the coastal marine environment, supporting biodiversity and recreational uses downstream.

The plant discharges into the Serchio River basin, which flows through the Apuan Alps and the plain of Lucca before reaching the Ligurian Sea. The Serchio River supports diverse aquatic life and is an important migratory corridor for fish species. The downstream coastal area includes sandy beaches and wetlands that are ecologically sensitive, requiring high-quality effluent to prevent eutrophication and protect marine habitats.