SALVATIERRA DE LOS BARROS Wastewater Treatment Plant, La Parra, Extremadura

SALVATIERRA DE LOS BARROS is an advanced wastewater treatment plant located in La Parra, within the municipality of Salvatierra de los Barros, in the province of Badajoz, Extremadura, Spain. The plant serves a population of 5,000 and has a designed capacity of 5,000 cubic meters per day, with a current discharge volume of 906.24 cubic meters per day. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. As a facility in Spain, it operates under the European Union's Urban Waste Water Treatment Directive (91/271/EEC), which requires advanced treatment for discharges into sensitive areas. The plant's advanced treatment level aligns with the directive's standards for protecting water quality. The treated effluent is discharged into local watercourses that ultimately drain into the Guadiana River basin, which flows into the Gulf of Cádiz in the Atlantic Ocean. The region's water bodies support diverse aquatic life and are important for agriculture and biodiversity in Extremadura.

The plant discharges into the Guadiana River basin, which flows through southwestern Spain and Portugal before reaching the Gulf of Cádiz. The Guadiana River supports a variety of fish species and provides habitat for migratory birds. The advanced treatment helps protect downstream ecosystems from nutrient pollution, which can cause eutrophication in coastal waters.