Overview
Chaves wastewater treatment plant serves the city of Chaves in northern Portugal, treating wastewater from approximately 38,500 people. The plant is located inland, discharging into the local watershed.
The Chaves wastewater treatment plant is a municipal facility serving the city of Chaves in the Vila Real district of northern Portugal. It handles wastewater from an estimated population of 38,500, placing it in the medium agglomeration category under EU classification. As a Portuguese plant, it operates under the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires secondary treatment for agglomerations of this size. The plant's treated effluent is discharged into the local water system, which ultimately drains into the Douro River basin. The Douro River flows westward through Portugal and empties into the Atlantic Ocean near Porto. The watershed supports diverse aquatic life and is important for regional water resources.
Environmental context
The Chaves plant discharges into the Douro River basin, one of the major river systems in the Iberian Peninsula. The Douro flows from Spain through northern Portugal to the Atlantic Ocean. The watershed supports a variety of fish species and is an important ecological corridor. The plant's operations help protect downstream water quality in this transboundary basin.
Frequently asked questions
The Chaves wastewater treatment plant is located at EN 103, Curalha, Chaves, Vila Real, 5400-283, Portugal, serving the city of Chaves in northern Portugal.
The Chaves plant serves approximately 38,500 people, classifying it as a medium-sized agglomeration under EU wastewater treatment regulations.
The treated wastewater from the Chaves plant is discharged into the local water system, which flows into the Douro River basin and eventually reaches the Atlantic Ocean.
As a Portuguese wastewater treatment plant, Chaves 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 between 10,000 and 100,000 people in Portugal are typically required to provide at least secondary treatment, with additional nutrient removal if discharging into sensitive areas.
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