CASAR DE CACERES Wastewater Treatment Plant, Casar de Cáceres, Extremadura

The CASAR DE CACERES wastewater treatment plant is located in Casar de Cáceres, a municipality in the province of Cáceres, Extremadura, Spain. The plant serves a population of approximately 9,000 people, making it a small to medium agglomeration under EU classification. As a Spanish facility, the plant operates under the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires secondary treatment for agglomerations of this size. The directive also mandates more advanced treatment if the receiving waters are designated as sensitive areas. The plant's treatment processes and capacity are managed to comply with national and EU standards. The treated effluent is discharged into local watercourses that eventually drain into the Tagus River basin, one of the Iberian Peninsula's major river systems. The Tagus flows westward through Spain and Portugal, emptying into the Atlantic Ocean near Lisbon. The plant plays a key role in protecting the local aquatic environment and downstream ecosystems from nutrient pollution and pathogens.

The plant discharges into the Tagus River basin, which flows through central Spain and Portugal to the Atlantic Ocean. The Tagus supports diverse aquatic life, including migratory fish species such as the European eel and barbel. Downstream, the river passes through the Tagus Estuary Natural Reserve, an important wetland for waterbirds. The plant's treatment helps maintain water quality in this ecologically significant basin.