CODOSERA LA Wastewater Treatment Plant, La Codosera, Extremadura, Spain

CODOSERA LA is a municipal wastewater treatment plant located in La Codosera, a town in the province of Badajoz, Extremadura, Spain. The plant serves a population of approximately 5,300 residents, classifying it as a small agglomeration under EU regulations. The plant provides secondary treatment, which is the minimum standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for freshwater discharges from agglomerations of this size. The designed capacity is 4,000 m³/day, and the reported discharge volume is 960.61 m³/day, indicating operational capacity below design levels. The treated effluent is discharged into the local watershed, which ultimately drains into the Guadiana River basin. The Guadiana River flows southwest through Extremadura and into the Gulf of Cádiz (Atlantic Ocean). The plant plays a key role in protecting local water quality and downstream ecosystems.

The plant discharges into a tributary of the Guadiana River, one of the major rivers of the Iberian Peninsula. The Guadiana basin supports diverse aquatic life and is an important agricultural and ecological corridor in Extremadura. Downstream, the river flows into the Gulf of Cádiz, a coastal area with sensitive marine habitats. Secondary treatment helps reduce organic pollution and nutrient loads, protecting both freshwater and coastal ecosystems.