IZNAJAR LA CELADA EL HIGUERAL Wastewater Treatment Plant, Iznájar, Andalucía

IZNAJAR LA CELADA EL HIGUERAL is a wastewater treatment plant located in Iznájar, a municipality in the province of Córdoba, Andalucía, Spain. The plant serves a population of approximately 3,869 and has a designed capacity of 4,000 m³/day, with an average discharge volume of 701.25 m³/day. It is situated inland, away from coastal areas. The plant provides secondary treatment, which is the standard level required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations with a population equivalent between 2,000 and 10,000. This directive mandates secondary treatment for all discharges from such communities to ensure adequate removal of organic matter and suspended solids. The treated effluent is discharged into local watercourses that eventually drain into the Guadalquivir River basin, one of Spain's major river systems. The Guadalquivir flows southwest through Andalucía and empties into the Atlantic Ocean near Sanlúcar de Barrameda. The plant plays a key role in protecting the water quality of the region's rivers and supporting downstream ecosystems.

The plant discharges into the Guadalquivir River basin, which supports diverse aquatic life and is an important agricultural and ecological corridor in southern Spain. The Guadalquivir River flows through the Doñana wetlands before reaching the Atlantic Ocean, a region of high ecological sensitivity. The plant's secondary treatment helps reduce nutrient and organic pollution, contributing to the health of downstream water bodies.