LOS ALCORES Wastewater Treatment Plant, Mairena del Alcor, Andalucía, Spain

LOS ALCORES is a wastewater treatment plant located in Mairena del Alcor, in the province of Seville, Andalucía, Spain. It serves a population of approximately 47,800, classifying it as a medium agglomeration under EU regulations. The plant is situated inland, away from the coast, and its operations are part of the regional water management infrastructure. As a facility in Spain, LOS ALCORES operates under the EU Urban Waste Water Treatment Directive (91/271/EEC). For agglomerations between 10,000 and 100,000 population equivalent, the directive requires secondary treatment or equivalent. The plant's treatment process and capacity are consistent with these regulatory standards, ensuring compliance with European water quality objectives. The treated effluent from LOS ALCORES is discharged into the local watershed, which ultimately drains into the Guadalquivir River basin. The Guadalquivir River flows through Andalucía and empties into the Gulf of Cádiz (Atlantic Ocean). The plant plays a key role in protecting the ecological health of the river system, supporting aquatic life and downstream water quality.

LOS ALCORES discharges into the Guadalquivir River basin, which flows through southern Spain to the Gulf of Cádiz. The Guadalquivir supports diverse aquatic ecosystems, including migratory fish species and wetland habitats. The plant's treatment helps maintain water quality in this ecologically sensitive river system, which is important for both biodiversity and regional water resources.