SOLANA DE LOS BARROS Wastewater Treatment Plant, Extremadura, Spain

The SOLANA DE LOS BARROS wastewater treatment plant is located in Solana de los Barros, a municipality in the province of Badajoz, Extremadura, Spain. The plant serves a population of 4,100 and is part of the region's wastewater infrastructure, handling domestic sewage from the local community. The plant provides secondary treatment, which is the standard biological treatment required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. With a designed capacity of 6,000 m³/day and an average discharge volume of 743.11 m³/day, the plant operates well below its capacity, indicating room for future growth or seasonal variations. The treated effluent is discharged into the local watershed, which ultimately drains into the Guadiana River basin. The Guadiana River flows westward through Extremadura and into the Gulf of Cádiz (Atlantic Ocean). The plant's operations help protect downstream water quality and support the ecological health of the Guadiana basin.

The plant discharges into the Guadiana River basin, which flows through Extremadura and into the Gulf of Cádiz. The Guadiana is a major river in the Iberian Peninsula, supporting diverse aquatic life and irrigated agriculture. The region's Mediterranean climate with hot, dry summers and mild, wet winters influences water availability and treatment demands. The plant's secondary treatment reduces organic pollutants and nutrients, helping to prevent eutrophication in downstream reservoirs and coastal waters.