Overview
CASAR DE PERIEDO wastewater treatment plant serves Casar, Cantabria, Spain, with a population equivalent of 15,061. The facility operates under Spain's implementation of the EU Urban Waste Water Treatment Directive.
CASAR DE PERIEDO is a wastewater treatment plant located in Casar, within the municipality of Cabezón de la Sal, Cantabria, Spain. Serving a population equivalent of approximately 15,061, the plant is part of the regional wastewater infrastructure for this inland community in northern Spain. As a Spanish facility, the plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size. The plant's compliance with national and EU standards ensures adequate treatment before discharge. Given its location in Cantabria, treated effluent likely flows into local rivers that drain into the Bay of Biscay (Atlantic Ocean). The surrounding watershed supports diverse aquatic life and contributes to the ecological health of the Cantabrian coastal region.
Environmental context
The plant is located in the Cantabrian region of northern Spain, within 50 km of the coast. Treated wastewater likely discharges into local rivers that flow into the Bay of Biscay, part of the Atlantic Ocean. The downstream environment includes estuaries and coastal habitats that support migratory fish and marine biodiversity. Protecting these waters from nutrient pollution is critical for maintaining water quality and ecosystem health.
Frequently asked questions
CASAR DE PERIEDO is located in Casar, within the municipality of Cabezón de la Sal, in the province of Cantabria, northern Spain.
The plant serves a population equivalent of 15,061, classifying it as a medium agglomeration under EU regulations.
The treated effluent is discharged into local watercourses that drain into the Bay of Biscay, part of the Atlantic Ocean.
As a Spanish plant serving over 10,000 PE, it must comply with the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment and, in sensitive areas, tertiary treatment.
For agglomerations of this size, secondary treatment (biological treatment) is standard under EU law. Many plants also incorporate nutrient removal to protect coastal waters.
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