Logrosan Wastewater Treatment Plant, Logrosán, Extremadura, Spain

The Logrosan wastewater treatment plant is located in Logrosán, a municipality in the province of Cáceres, Extremadura, Spain. The facility serves a population equivalent of approximately 6,500, placing it in the small-to-medium agglomeration category under EU classification. As a Spanish wastewater treatment plant, Logrosan 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 appropriate collection systems and discharge standards to protect receiving water bodies. The plant is expected to meet the regulatory requirements for biological treatment and nutrient removal where applicable. The treated effluent from the plant is discharged into the local watershed, which ultimately drains into the Tagus River basin. The Tagus River flows westward through Spain and Portugal before emptying into the Atlantic Ocean near Lisbon. The Extremadura region is characterized by a Mediterranean climate with hot summers and mild winters, and the plant plays a role in protecting local water quality and downstream ecosystems.

The plant discharges into the Tagus River basin, one of the Iberian Peninsula's major river systems. The Tagus flows through central Spain and Portugal, supporting diverse aquatic life and providing water for agriculture and urban use. Downstream, the river forms the Tagus Estuary near Lisbon, an ecologically important area for migratory birds and fish species. The plant's operation helps maintain water quality in this basin, reducing nutrient and pollutant loads that could affect downstream habitats.