Overview
ARENAS DE SAN PEDRO wastewater treatment plant serves the town of Arenas de San Pedro in Ávila, Castilla y León, Spain. It treats wastewater for approximately 20,000 people.
ARENAS DE SAN PEDRO is a wastewater treatment plant located in Arenas de San Pedro, a town in the province of Ávila, Castilla y León, Spain. The plant serves a population of around 20,000 residents, making it a medium-sized facility under Spanish and EU classifications. As a Spanish plant, it operates under the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires secondary treatment for agglomerations of this size. The directive also mandates more advanced treatment if the receiving waters are designated as sensitive areas. Compliance with national and EU standards is expected. The treated effluent is discharged into the local watershed, which ultimately drains into the Tagus River basin. The Tagus River flows westward through Spain and Portugal before reaching the Atlantic Ocean near Lisbon. The plant plays a key role in protecting the local aquatic environment and downstream water quality.
Environmental context
The plant discharges into the Tagus River basin, one of the Iberian Peninsula's major river systems. The Tagus flows through central Spain and Portugal, supporting diverse aquatic life and providing water for agriculture and urban use. The downstream environment includes the Tagus Estuary in Portugal, an ecologically sensitive area that hosts migratory birds and marine species. Protecting water quality in this basin is critical for both ecological health and human use.
Frequently asked questions
The plant is located in Arenas de San Pedro, a town in the province of Ávila, Castilla y León, Spain.
The plant serves approximately 20,000 people, classifying it as a medium-sized agglomeration under EU standards.
The treated effluent is discharged into the local watershed, which flows into the Tagus River basin and eventually reaches 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 require tertiary treatment if the receiving waters are sensitive.
Under the EU Urban Waste Water Treatment Directive, plants serving 10,000 to 150,000 people typically require secondary treatment. In sensitive areas, additional nutrient removal may be mandated.
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