Overview
Tolosa wastewater treatment plant serves the parish of Tolosa in Nisa, Portalegre, Portugal. It handles a population equivalent of 13,400 under EU Urban Waste Water Treatment Directive standards.
Tolosa wastewater treatment plant is located in the parish of Tolosa, part of the municipality of Nisa in the Portalegre District of Portugal. The facility serves a population equivalent of 13,400, placing it in the medium agglomeration category under EU classification. As a Portuguese plant, Tolosa 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. The regulatory framework ensures compliance with European standards for effluent quality. The plant discharges into the local watershed, which ultimately drains into the Tagus River basin. The Tagus River flows westward through Portugal and into the Atlantic Ocean near Lisbon. The downstream environment supports diverse aquatic life and is an important ecological corridor in the Iberian Peninsula.
Environmental context
Tolosa's treated effluent enters the local watercourses that feed into the Tagus River basin. The Tagus is one of the longest rivers in the Iberian Peninsula, flowing through Portugal and Spain before reaching the Atlantic Ocean. The river supports a variety of fish species and provides habitat for migratory birds. The watershed is ecologically sensitive, with areas of riparian vegetation that help maintain water quality and biodiversity.
Frequently asked questions
The Tolosa wastewater treatment plant is located in the parish of Tolosa, within the municipality of Nisa, in the Portalegre District of Portugal. The address is Rua de Abrantes, Tolosa, Nisa, Portalegre, 6050-515, Portugal.
The Tolosa wastewater treatment plant serves a population equivalent of 13,400, which classifies it as a medium-sized agglomeration under EU standards.
The treated wastewater from Tolosa is discharged into local watercourses that are part of the Tagus River basin. The Tagus River eventually flows into the Atlantic Ocean near Lisbon.
As a Portuguese wastewater treatment plant, Tolosa operates under the EU Urban Waste Water Treatment Directive (91/271/EEC). This directive requires secondary treatment for agglomerations of this size and may require tertiary treatment if the receiving waters are sensitive areas.
For a plant serving approximately 13,400 people in Portugal, the EU Urban Waste Water Treatment Directive mandates secondary treatment as a minimum. Many plants of this scale also incorporate nutrient removal to meet environmental standards, especially if discharging into sensitive water bodies.
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