LOZOYUELA Wastewater Treatment Plant, Las Navas de Buitrago, Comunidad de Madrid

LOZOYUELA is a wastewater treatment plant located in Las Navas de Buitrago, within the municipality of Lozoyuela-Navas-Sieteiglesias in the Comunidad de Madrid, Spain. The facility serves a small population of 390 and is designed to handle a capacity of 2,640 cubic meters per day, with an average discharge volume of 442.88 m³/day. The plant operates with secondary treatment, which is the standard level required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids, ensuring compliance with European environmental standards. The treated effluent is discharged into local watercourses that ultimately drain into the Tagus River basin, a major river system in the Iberian Peninsula. The plant plays a key role in protecting the local watershed and downstream ecosystems from pollution, supporting water quality in the region.

The plant discharges into the Tagus River basin, which flows westward through Spain and Portugal before reaching the Atlantic Ocean near Lisbon. The local watershed supports diverse aquatic life and is an important resource for agriculture and drinking water. The secondary treatment provided helps reduce nutrient and organic loads, mitigating eutrophication risks in downstream water bodies.