Norcia Serravalle Wastewater Treatment Plant, Norcia, Umbria, Italy

The Norcia Serravalle wastewater treatment plant is located in Norcia, a town in the Umbria region of central Italy. It serves a population of approximately 2,929 people, classifying it as a small agglomeration under Italian and EU regulations. The plant is situated inland, away from coastal areas, and its operations are part of the region's municipal wastewater infrastructure. The plant provides advanced treatment, which goes beyond the minimum secondary treatment required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. Its designed capacity is 12,000 m³/day, while the current discharge volume is 579.84 m³/day, indicating significant spare capacity. The plant's advanced treatment level suggests it may be in a sensitive area requiring nutrient removal or other tertiary processes. The treated effluent is discharged into local water bodies that ultimately drain into the Tiber River basin, which flows through Umbria and Lazio before reaching the Tyrrhenian Sea. The plant plays a key role in protecting the region's water quality and supporting the ecological health of downstream aquatic environments.

The plant discharges into the Tiber River basin, which flows through central Italy and empties into the Tyrrhenian Sea near Rome. The Tiber supports diverse aquatic life and is an important water resource for agriculture and urban areas. The advanced treatment at Norcia Serravalle helps reduce nutrient loads and pollutants, protecting downstream ecosystems and the coastal marine environment from eutrophication and contamination.