Tembleque Wastewater Treatment Plant | Tembleque, Castilla-La Mancha, Spain

The Tembleque wastewater treatment plant is located in the municipality of Tembleque, in the province of Toledo, Castilla-La Mancha, Spain. It serves a population of approximately 4,150 residents, classifying it as a small agglomeration under Spanish and EU regulations. The plant is situated in an inland, agricultural region of central Spain. The facility provides secondary biological treatment, which is the standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size discharging into freshwater. The plant treats an average daily flow of 280 cubic meters. As a municipal facility, it is subject to Spanish national regulations that implement the EU directive, ensuring compliance with effluent quality standards. The treated effluent is discharged into local watercourses that eventually drain into the Tagus River basin, one of the major river systems in the Iberian Peninsula. The Tagus River flows westward through Spain and Portugal, reaching the Atlantic Ocean near Lisbon. The plant's operations help protect the local streams and the downstream Tagus ecosystem from nutrient pollution and organic loading.

The plant discharges into small tributaries of the Tagus River basin, which flows through central Spain and Portugal to the Atlantic Ocean. The Tagus basin supports diverse aquatic life and is an important water resource for agriculture and urban supply. The region's semi-arid climate makes water quality management critical for maintaining ecological balance in these intermittent streams.