DEP_COM_PASTINE Wastewater Treatment Plant, San Vito Romano, Lazio, Italy

DEP_COM_PASTINE is an advanced wastewater treatment plant located in San Vito Romano, a town in the Metropolitan City of Rome, Lazio, Italy. The plant serves a population of 4,800 and has a designed capacity of 5,000 cubic meters per day, with an actual discharge volume of approximately 950 m³/day, indicating operational headroom. As an advanced treatment facility, it goes beyond secondary treatment to remove nutrients and other pollutants, aligning with Italy's implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC). For agglomerations under 10,000 population equivalent, the directive requires appropriate treatment, and Italy often mandates advanced treatment in sensitive areas such as the Tiber River basin. The plant's treated effluent is discharged into local watercourses that eventually drain into the Tiber River, which flows through Rome and into the Tyrrhenian Sea. The Tiber basin supports diverse aquatic life and is an important ecological corridor in central Italy, making advanced treatment crucial for protecting downstream water quality and marine ecosystems.

The plant discharges into tributaries of the Tiber River, which flows southwest through Lazio and into the Tyrrhenian Sea near Ostia. The Tiber basin is a major watershed supporting agricultural, urban, and industrial activities, and its estuarine zone is ecologically sensitive, hosting migratory fish species and diverse wetland habitats. Advanced treatment helps reduce nutrient loading that could otherwise contribute to eutrophication in the coastal marine environment.