CANTIMPALOS Wastewater Treatment Plant - Escarabajosa de Cabezas, Castilla y León, Spain

The CANTIMPALOS wastewater treatment plant is located in Escarabajosa de Cabezas, within the province of Segovia in the autonomous community of Castilla y León, Spain. It serves a population of approximately 8,200 residents, classifying it as a small to medium agglomeration under Spanish and EU regulations. The plant employs advanced treatment processes, which go beyond the secondary treatment standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. Its designed capacity of 8,200 m³/day matches the population served, indicating adequate infrastructure for current loads. The plant discharges a daily volume of 900 m³ of treated wastewater. Treated effluent from the plant is discharged into local watercourses that ultimately drain into the Duero River basin, a major hydrological system in northwestern Spain. The Duero River flows westward into Portugal and empties into the Atlantic Ocean at Porto. The plant's advanced treatment helps protect the ecological health of these receiving waters, supporting aquatic life and downstream water quality.

The plant discharges into the Duero River basin, which flows through Castilla y León and into Portugal before reaching the Atlantic Ocean. The Duero is a vital water resource for agriculture and ecosystems in the region. Advanced treatment at this plant reduces nutrient loads and pollutants, helping to prevent eutrophication and maintain biodiversity in the river and its estuary.