CARABANA Wastewater Treatment Plant, Carabaña, Comunidad de Madrid, Spain

The CARABANA wastewater treatment plant is located in Carabaña, a municipality in the Comunidad de Madrid, Spain. It serves a small population of 879 residents, reflecting its role in a rural or semi-rural setting. The plant is situated inland, away from coastal areas, and its operations are part of the regional water management infrastructure. 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. The designed capacity is 6,200 m³/day, while the current discharge volume is 459.07 m³/day, indicating a utilization rate well below capacity. This suggests the plant is sized for future growth or seasonal peaks. The treated effluent is discharged into a local watercourse, which ultimately drains into the Tagus River basin, the largest river system in the Iberian Peninsula. The Tagus River flows westward through Spain and Portugal, emptying into the Atlantic Ocean near Lisbon. The plant's operations help protect the local aquatic environment and downstream water quality.

The plant discharges into a tributary of the Tagus River basin, which flows through central Spain and Portugal to the Atlantic Ocean. The Tagus River supports diverse aquatic life and is an important water resource for agriculture and urban supply. The plant's secondary treatment reduces organic pollutants and suspended solids, helping to maintain the ecological health of the receiving waters.