DEP_COM_VALLE_MAGGESE Wastewater Treatment Plant, Sant'Oreste, Lazio, Italy

DEP_COM_VALLE_MAGGESE is an advanced wastewater treatment plant located in Sant'Oreste, within the Roma Capitale area of Lazio, Italy. The plant serves a population of 2,900 and has a designed capacity of 4,000 m³/day, with an average discharge volume of 574.10 m³/day. 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 of this size, the directive requires secondary treatment, but the plant's advanced level indicates it likely discharges into a sensitive area or has additional environmental requirements. The plant's treated effluent is discharged into the local watershed, which ultimately drains into the Tiber River basin and then into the Tyrrhenian Sea. This downstream connection underscores the plant's role in protecting both local water quality and the broader marine environment from nutrient pollution and other contaminants.

The plant discharges into the Tiber River basin, which flows through Lazio and empties into the Tyrrhenian Sea near Rome. This watershed supports diverse aquatic life and is ecologically sensitive due to its proximity to the coastal marine environment. The advanced treatment level helps reduce nutrient loading, protecting downstream ecosystems from eutrophication and maintaining water quality for recreational and ecological uses.