Overview
Geres wastewater treatment plant serves the Terras de Bouro area in Braga, Portugal, with a population equivalent of 8,000. The plant operates under Portugal's implementation of the EU Urban Waste Water Treatment Directive.
Geres is a wastewater treatment plant located in the civil parish of Vilar da Veiga, in the municipality of Terras de Bouro, Braga District, Portugal. The plant serves a population equivalent of approximately 8,000 people, placing it in the small to medium agglomeration category under EU classification. As a Portuguese facility, Geres operates under the national transposition of the EU Urban Waste Water Treatment Directive (91/271/EEC). For agglomerations of this scale, the directive requires secondary treatment as a minimum standard. The plant's discharge is regulated by the Portuguese Environment Agency (APA) under the national water law framework. The treated effluent from Geres is discharged into the local watershed, which ultimately drains into the Cávado River basin. The Cávado River flows southwest through the Minho region and empties into the Atlantic Ocean near Esposende. The receiving waters support diverse aquatic ecosystems and are important for regional water quality management.
Environmental context
The plant's discharge enters the Cávado River basin, a major watercourse in northern Portugal that flows through the Peneda-Gerês National Park region before reaching the Atlantic Ocean. The downstream environment includes ecologically sensitive areas that support native fish species and riparian habitats. The Cávado River is also used for hydroelectric power generation and agricultural water supply, making effluent quality important for multiple downstream uses.
Frequently asked questions
The Geres wastewater treatment plant is located at ER 205-5, Assureira, Vilar da Veiga, in the municipality of Terras de Bouro, Braga District, Portugal. It serves the local population of the Terras de Bouro area.
The Geres treatment plant serves a population equivalent of approximately 8,000 people, classifying it as a small to medium agglomeration under EU wastewater treatment standards.
The treated wastewater from Geres is discharged into the local watershed, which flows into the Cávado River basin. The Cávado River eventually reaches the Atlantic Ocean near Esposende.
As a Portuguese facility, Geres operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), transposed into national law. For agglomerations of 8,000 PE, the directive mandates secondary treatment as a minimum, with permits issued by the Portuguese Environment Agency (APA).
For agglomerations of this size in Portugal, typical treatment includes secondary biological treatment, often using activated sludge or trickling filter processes. The EU UWWTD requires secondary treatment for all discharges from agglomerations above 2,000 PE, with more stringent requirements if the receiving waters are designated as sensitive areas.
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