Overview
Soria wastewater treatment plant serves the city of Soria in Castilla y León, Spain, with a population equivalent of 70,600. It operates under the EU Urban Waste Water Treatment Directive.
The Soria wastewater treatment plant is a municipal facility located in Soria, Castilla y León, Spain. It serves a population equivalent of 70,600, classifying it as a medium agglomeration under EU regulations. The plant is situated near the Duero River basin, which is a major watercourse in the region. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), agglomerations of this size are required to provide secondary treatment as a minimum. For discharges into sensitive areas, such as the Duero basin, tertiary treatment may be mandated to reduce nutrient loads. The regulatory framework ensures compliance with European standards. The treated effluent is discharged into the Duero River, which flows westward through Castilla y León into Portugal, eventually reaching the Atlantic Ocean at Porto. The Duero basin supports diverse aquatic life and is an important ecological corridor. The plant plays a key role in protecting water quality in this transboundary river system.
Environmental context
The Soria plant discharges into the Duero River, which flows through the Duero basin into Portugal and the Atlantic Ocean. The river supports a variety of fish species, including migratory trout and barbel, and its waters are used for irrigation and drinking water downstream. Protecting water quality in this basin is critical for maintaining ecological balance and meeting EU Water Framework Directive goals.
Frequently asked questions
The SORIA plant is located at Paseo San Prudencio, Soria, Castilla y León, 42003, Spain.
The plant serves a population equivalent of 70,600 people.
The treated effluent is discharged into the Duero River, which flows through Spain and Portugal to the Atlantic Ocean.
The plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size and may mandate tertiary treatment for sensitive areas.
In Spain, plants serving 70,000 people typically provide secondary treatment as a minimum, with tertiary treatment often required for nutrient removal in sensitive river basins like the Duero.
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