IDL_CORBAIA Wastewater Treatment Plant, Montepulciano, Tuscany

IDL_CORBAIA is a wastewater treatment plant located in Montepulciano, in the Tuscany region of Italy. The facility serves a population of approximately 2,105 people, classifying it as a small agglomeration under the EU Urban Waste Water Treatment Directive (UWWTD). The plant is situated near the Autostrada del Sole in the Valdichiana Senese area. The plant employs advanced treatment processes, which go beyond the secondary treatment standard required by the EU UWWTD for smaller agglomerations. Advanced treatment typically includes nutrient removal (nitrogen and phosphorus) to protect sensitive water bodies. The plant has a designed capacity of 9,000 units, with a current discharge volume of 416.72 units, indicating significant spare capacity. The treated effluent is discharged into the local watershed, which ultimately drains into the Tyrrhenian Sea via the Chiana River and the Tiber River basin. The advanced treatment level helps protect downstream aquatic ecosystems and supports the ecological health of the region's waterways.

The plant discharges into the Valdichiana basin, part of the Tiber River catchment, which flows into the Tyrrhenian Sea. This watershed supports diverse aquatic life and is important for regional water quality. The advanced treatment helps reduce nutrient loading, protecting downstream habitats from eutrophication.