Alconchel Wastewater Treatment Plant - Alconchel, Extremadura, Spain

The Alconchel wastewater treatment plant is located in the town of Alconchel, within the province of Badajoz in the Extremadura region of Spain. It serves a population of around 2,462, classifying it as a small agglomeration under the EU Urban Waste Water Treatment Directive (91/271/EEC). The plant is situated inland, far from coastal areas, and its operations are part of Spain's municipal wastewater infrastructure. The plant provides secondary treatment, which is the standard biological treatment required by the EU UWWTD for freshwater discharges from agglomerations of this size. With a designed capacity of 2,640 cubic meters per day and an average discharge volume of 446 cubic meters per day, the facility operates well within its capacity. The treatment process aligns with EU regulations that mandate secondary treatment for all discharges to inland waters. The treated effluent is discharged into local watercourses that ultimately drain into the Guadiana River basin, one of the major river systems in the Iberian Peninsula. The Guadiana River flows southwest through Spain and Portugal before emptying into the Gulf of Cádiz (Atlantic Ocean). The plant plays a key role in protecting the local watershed and downstream aquatic ecosystems from untreated wastewater pollution.

The plant discharges into the Guadiana River basin, which flows through the Extremadura region and into the Atlantic Ocean via the Gulf of Cádiz. The Guadiana supports diverse aquatic life and is an important water resource for agriculture and ecosystems in the region. The secondary treatment provided by the plant helps reduce organic pollutants and nutrients, protecting the river's ecological health and downstream habitats.