Almaden de la Plata Wastewater Treatment Plant, Almadén de la Plata, Andalucía

The Almaden de la Plata wastewater treatment plant is located in the municipality of Almadén de la Plata, in the province of Seville, Andalucía, Spain. It serves a population of 4,533 and is classified as a small agglomeration under Spanish and EU regulations. As a secondary treatment facility, the plant provides biological treatment to reduce organic matter and suspended solids. The designed capacity is 4,533 cubic meters per day, with an average discharge volume of 821.59 cubic meters per day. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), secondary treatment is the minimum requirement for freshwater discharges from agglomerations of this size. The plant's treated effluent is discharged into the local watershed, which ultimately drains into the Guadalquivir River basin and then into the Atlantic Ocean. The surrounding area is characterized by Mediterranean climate and rural landscape, with the plant playing a role in protecting local water quality and downstream ecosystems.

The plant discharges into the Guadalquivir River basin, which flows through Andalucía and empties into the Gulf of Cádiz (Atlantic Ocean). The downstream environment supports diverse aquatic life and is an important ecological corridor. The region's Mediterranean climate means water resources are seasonally stressed, making effective wastewater treatment critical for maintaining water quality in the basin.