GAVIGNANO Wastewater Treatment Plant, Gavignano Sabino, Lazio, Italy

GAVIGNANO is an advanced wastewater treatment plant located in Gavignano Sabino, a frazione of Forano in the province of Rieti, Lazio, Italy. The plant serves a small population of around 1,200 residents, typical of a rural agglomeration in central Italy. The plant employs advanced treatment processes, which go beyond the secondary treatment required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. With a designed capacity of 1,700 cubic meters per day and a current discharge volume of 237.56 cubic meters per day, the facility operates well within its capacity, ensuring effective treatment of municipal wastewater. The treated effluent is discharged into local watercourses that eventually drain into the Tiber River, the third-longest river in Italy. The Tiber flows through Rome and into the Tyrrhenian Sea, making the plant's advanced treatment important for protecting downstream water quality and the sensitive coastal ecosystem of the Tyrrhenian Sea.

The plant discharges into local streams that are part of the Tiber River basin. The Tiber flows southward through Lazio, passing Rome, and empties into the Tyrrhenian Sea. The downstream environment includes agricultural areas and the Tiber's delta, which supports diverse aquatic life and migratory birds. Advanced treatment helps reduce nutrient loading, protecting the river and coastal waters from eutrophication.