Silvouta Santiago Wastewater Treatment Plant, Santiago de Compostela, Galicia, Spain

Silvouta Santiago is a wastewater treatment plant located in the Silvouta area of Santiago de Compostela, in the province of A Coruña, Galicia, Spain. The plant serves a population of approximately 177,576 people, classifying it as a large agglomeration under EU standards. The plant operates under the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires secondary treatment for agglomerations of this size, and tertiary treatment if discharging into sensitive areas. With a designed capacity of 1.00, the plant is equipped to handle the wastewater from the city and surrounding areas. The treated effluent is discharged into local water bodies that ultimately drain into the Atlantic Ocean via the Galician coast. The plant plays a key role in protecting the region's rivers and coastal ecosystems from pollution, supporting water quality and aquatic life in the downstream environment.

The plant discharges into the Tambre River basin, which flows into the Ría de Muros e Noia, an estuary on the Atlantic coast of Galicia. This coastal area supports diverse marine life and is an important ecological zone. The region's oceanic climate and rugged terrain influence runoff patterns, making effective wastewater treatment critical to prevent nutrient enrichment and protect the sensitive estuarine habitats.