CUEVAS BAJAS Wastewater Treatment Plant, Cuevas Bajas, Andalucía, Spain

CUEVAS BAJAS is a wastewater treatment plant located in Cuevas Bajas, a municipality in the province of Málaga, Andalucía, southern Spain. The plant served a population of approximately 2,641 residents and had a designed capacity of 2,000 cubic meters per day. It is currently closed and no longer operational. The plant provided primary treatment, which involves physical processes such as sedimentation to remove settleable solids. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), agglomerations with a population equivalent (PE) between 2,000 and 10,000 are generally required to have appropriate treatment, though primary treatment may be acceptable in certain circumstances. The plant's discharge volume was recorded at 478.67 m³/day. As an inland facility located more than 50 km from the coast, the plant's treated effluent would have discharged into local watercourses that ultimately drain into the Mediterranean Sea via the Guadalhorce River basin. The surrounding region is characterized by a Mediterranean climate and agricultural land use, making proper wastewater management important for protecting local streams and groundwater quality.

The plant is situated inland in the Guadalhorce River basin, which flows southward into the Mediterranean Sea near Málaga. The local watershed supports agricultural irrigation and sustains aquatic habitats. Although the plant is closed, its historical operations would have influenced the water quality of nearby streams that contribute to the Guadalhorce River, an ecologically important corridor for migratory birds and native fish species.