ALCALA DE HENARES OESTE Wastewater Treatment Plant, Alcalá de Henares, Spain

ALCALA DE HENARES OESTE is a wastewater treatment plant located in the La Garena district of Alcalá de Henares, within the Comunidad de Madrid, Spain. The plant serves a population of approximately 195,974, classifying it as a large agglomeration under EU regulations. As a large agglomeration, the plant is required to meet secondary treatment standards under the EU Urban Waste Water Treatment Directive (91/271/EEC). Given its size and location in a sensitive area, it likely employs advanced treatment to protect the receiving water body. The regulatory framework ensures appropriate treatment levels. The plant discharges treated wastewater into the Henares River, a tributary of the Jarama River, which flows into the Tagus River and eventually reaches the Atlantic Ocean near Lisbon. The Henares River supports diverse aquatic life and is an important ecological corridor in the Madrid region.

The plant discharges into the Henares River, which flows into the Jarama River, a major tributary of the Tagus River. The Tagus River is the longest river in the Iberian Peninsula, emptying into the Atlantic Ocean near Lisbon. The Henares River supports a variety of fish and bird species and is part of a network of riparian habitats crucial for biodiversity in the Madrid region. The plant's discharge must comply with stringent EU standards to protect this downstream ecosystem.