Torrecillas de la Tiesa Wastewater Treatment Plant, Extremadura, Spain

Torrecillas de la Tiesa wastewater treatment plant is located in the municipality of Torrecillas de la Tiesa, in the province of Cáceres, Extremadura, Spain. The plant serves a population of approximately 2,500 residents, classifying it as a small agglomeration under EU regulations. The plant provides secondary treatment, which is the minimum standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for freshwater discharges from agglomerations of this size. The designed capacity is 2,500 cubic meters per day, and the current discharge volume is 453.12 cubic meters per day, indicating operational capacity well within design limits. The treated effluent is discharged into local watercourses that drain into the Tagus River basin, one of the Iberian Peninsula's major river systems. The Tagus River flows westward through Spain and Portugal, eventually reaching the Atlantic Ocean near Lisbon. The plant's operations help protect downstream aquatic ecosystems and water quality in the Tagus basin.

The plant discharges into the Tagus River basin, which flows through central Spain and Portugal before emptying into the Atlantic Ocean. The Tagus supports diverse aquatic life and provides water for agriculture, industry, and drinking water for millions of people. The secondary treatment provided helps reduce organic pollutants and suspended solids, protecting the ecological health of the river and its estuary.