IDL_Monteroni_D_Arbia_Podere_Fede Wastewater Treatment Plant, Monteroni d'Arbia, Tuscany

IDL_Monteroni_D_Arbia_Podere_Fede is a wastewater treatment plant located in Monteroni d'Arbia, a municipality in the province of Siena, Tuscany, Italy. The plant serves a population of approximately 5,000 and is part of the region's wastewater infrastructure, operating under Italian regulations that implement the EU Urban Waste Water Treatment Directive (91/271/EEC). The plant provides secondary treatment, which is the standard level required for agglomerations of this size under the EU directive. With a designed capacity of 12,000 m³/day, the plant is sized to handle current and future flows, and the reported discharge volume of 991 m³/day indicates a utilization rate well below capacity. The treated effluent is discharged into the local water environment, contributing to the protection of the Arbia River and its downstream ecosystems. The plant plays a key role in maintaining water quality in the Ombrone River basin, which ultimately drains into the Tyrrhenian Sea.

The plant discharges into the Arbia River, a tributary of the Ombrone River, which flows through southern Tuscany before reaching the Tyrrhenian Sea. The Ombrone basin supports diverse aquatic life and is ecologically sensitive, particularly in its lower reaches where wetlands and coastal areas provide important habitats. The plant's secondary treatment helps reduce nutrient and organic loads, protecting downstream water quality.