ARANJUEZ NORTE Wastewater Treatment Plant, Aranjuez, Spain

ARANJUEZ NORTE is a wastewater treatment plant located in Aranjuez, within the Comunidad de Madrid, Spain. The facility serves a population of approximately 7,849 and is situated in an industrial area near the city center. It operates as part of the regional wastewater infrastructure managed by the Comunidad de Madrid. The plant employs advanced treatment processes, ensuring a high level of effluent quality. With a designed capacity of 40,000 m³/day, it currently discharges 329.37 m³/day, indicating significant spare capacity. As a Spanish facility, it operates under the national water regulations that transpose the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment for agglomerations of this size and advanced treatment in sensitive areas. The treated effluent is discharged into the local water system, which ultimately drains into the Tagus River basin. The Tagus River is the longest river in the Iberian Peninsula, flowing through Spain and Portugal to the Atlantic Ocean. The plant plays a key role in protecting the downstream aquatic environment, including the Tagus River and its associated ecosystems.

The plant discharges into the Tagus River basin, which flows westward through central Spain and Portugal before reaching the Atlantic Ocean near Lisbon. The Tagus River supports diverse aquatic life and is an important water resource for agriculture and urban supply. The advanced treatment at ARANJUEZ NORTE helps reduce nutrient and pollutant loads, protecting downstream water quality and ecological health in the basin.