Overview
Liendo wastewater treatment plant in Cantabria, Spain, serves 1,590 people with advanced treatment. It discharges 637.82 m³/day and is located within 10 km of the coast.
Liendo wastewater treatment plant is located in the municipality of Liendo, Cantabria, Spain, serving a population of approximately 1,590 residents. The plant is situated in the coastal region of northern Spain, near the Bay of Biscay. The facility employs advanced treatment processes, exceeding the secondary treatment standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. With a designed capacity of 6,500 m³/day, the plant operates well below its capacity, treating an average of 637.82 m³/day. The treated effluent is discharged into local watercourses that flow into the Bay of Biscay, a marine environment supporting diverse aquatic life. The plant plays a key role in protecting coastal water quality and the ecological health of the Cantabrian Sea.
Environmental context
The plant discharges into streams that drain into the Bay of Biscay, part of the Atlantic Ocean. This coastal region supports important marine habitats and fisheries. Advanced treatment helps minimize nutrient and pollutant loads, safeguarding the sensitive coastal ecosystem from eutrophication and contamination.
Frequently asked questions
Liendo WWTP is located in Barrio Isequilla, Mollaneda, Hazas, Liendo, Cantabria, Spain, near the northern coast.
The plant serves approximately 1,590 people in the Liendo area.
The treated effluent is discharged into local streams that flow into the Bay of Biscay, a coastal marine environment.
The plant provides advanced treatment, which goes beyond the secondary treatment required by the EU Urban Waste Water Treatment Directive for small agglomerations.
As a Spanish plant, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates appropriate treatment for discharges into sensitive coastal areas.
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