San Gemini Lago Wastewater Treatment Plant, San Gemini, Umbria, Italy

San Gemini Lago is a wastewater treatment plant located in the Umbria region of Italy, serving the town of San Gemini. The plant treats wastewater for a population of approximately 2,126 people, with a designed capacity of 2,600 cubic meters per day. It operates under Italy's implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires advanced treatment for sensitive areas. The plant employs advanced treatment processes, ensuring a high level of pollutant removal before discharge. With an average daily discharge volume of about 421 cubic meters, the facility operates well within its designed capacity, indicating efficient management. The plant's advanced treatment level aligns with EU standards for protecting sensitive water bodies. The treated effluent is discharged into the local water system, which ultimately drains into the Tiber River basin. The Tiber River flows through central Italy and into the Tyrrhenian Sea, supporting diverse aquatic ecosystems. The plant's advanced treatment helps reduce nutrient loading and protects downstream water quality in this ecologically important region.

The plant discharges into the local watershed that feeds into the Tiber River, one of Italy's major rivers. The Tiber flows through Umbria and Lazio before emptying into the Tyrrhenian Sea near Rome. The river supports a variety of aquatic life and is an important migratory corridor for fish. Advanced treatment at this plant helps minimize eutrophication risks in the downstream river and coastal marine environment.