Vitigudino Wastewater Treatment Plant, Castilla y León, Spain

The Vitigudino wastewater treatment plant is located in the province of Salamanca, in the autonomous community of Castilla y León, Spain. It serves the municipality of Vitigudino and surrounding areas, with a population equivalent of 6,300. The plant is situated inland, away from coastal zones, and discharges treated wastewater into local watercourses. The plant operates at the secondary treatment level, which is the standard requirement under the European Union's Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. The designed capacity of 6,500 m³/day aligns with the population served, and the current discharge volume of 862 m³/day indicates operational capacity well within design limits. The plant is part of Spain's national wastewater infrastructure, regulated by the relevant water authorities. The treated effluent from the Vitigudino plant ultimately drains into the Duero River basin, which flows westward through Spain and into Portugal, discharging into the Atlantic Ocean at Porto. The Duero basin supports diverse aquatic ecosystems and is an important water resource for agriculture and human consumption. The plant's secondary treatment helps protect downstream water quality and ecological health.

The Vitigudino plant discharges into the Duero River basin, which flows through the Iberian Peninsula and empties into the Atlantic Ocean. The basin supports a variety of aquatic habitats and is a critical resource for irrigation and drinking water. Secondary treatment reduces organic pollutants and suspended solids, helping to maintain the ecological balance of the receiving waters and protect downstream biodiversity.