PALENCIA Wastewater Treatment Plant - Palencia, Castilla y León, Spain

The PALENCIA wastewater treatment plant is located in Palencia, Castilla y León, Spain, serving a population equivalent of 196,600. The plant is situated in the industrial area of Olmillos, south of the city, and is part of the region's municipal wastewater infrastructure. As a large agglomeration under the EU Urban Waste Water Treatment Directive (91/271/EEC), the plant is expected to provide at least secondary treatment, with tertiary treatment required if the receiving waters are designated as sensitive areas. The plant's treatment processes and capacity are designed to meet these regulatory standards, ensuring compliance with European environmental norms. The treated effluent is discharged into the local water system, which ultimately drains into the Duero River basin. The Duero River flows westward through Spain and into Portugal, emptying into the Atlantic Ocean. The plant plays a key role in protecting the ecological health of the Duero basin, supporting aquatic life and water quality downstream.

The plant discharges into the Duero River basin, which flows through the Castilla y León region and into Portugal before reaching the Atlantic Ocean. The Duero is a major river supporting diverse aquatic ecosystems and agricultural water use. The plant's treatment helps maintain water quality in this transboundary basin, reducing nutrient loads and protecting downstream habitats.