Fernán-Núñez Wastewater Treatment Plant, Fernán-Núñez, Andalucía, Spain

The Fernán-Núñez wastewater treatment plant is located in the town of Fernán-Núñez, in the province of Córdoba, Andalucía, Spain. It serves a population equivalent of 15,472, classifying it as a medium-sized agglomeration under EU regulations. The plant is part of the municipal wastewater infrastructure for the region. 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 stringent treatment if the receiving waters are designated as sensitive areas. Spain has transposed these requirements into national law, and the plant is subject to oversight by the regional water authority in Andalucía. The treated effluent is discharged into the local watershed, which ultimately drains into the Guadalquivir River basin. The Guadalquivir River flows through Andalucía and empties into the Atlantic Ocean at the Gulf of Cádiz. The plant plays a key role in protecting the water quality of this important river system, which supports diverse aquatic life and agricultural activities in the region.

The plant discharges into the Guadalquivir River basin, which flows through southern Spain and drains into the Atlantic Ocean at the Gulf of Cádiz. The Guadalquivir is a major river supporting irrigated agriculture, wetlands, and estuarine ecosystems. Downstream, the river passes through the Doñana region, an ecologically sensitive area that hosts migratory birds and endangered species. The plant's treatment helps reduce nutrient and pollutant loads to this vital waterway.