Overview
Pedreiras wastewater treatment plant serves the town of Porto de Mós in Leiria, Portugal. It is designed for a capacity of 1.00 and serves a population of 6,000.
Pedreiras wastewater treatment plant is located in Casal Boieiro, Pedreiras, within the municipality of Porto de Mós in the Leiria district of Portugal. The plant serves a population of approximately 6,000 people, placing it in the small to medium agglomeration category under Portuguese and EU regulations. As a plant operating under the EU Urban Waste Water Treatment Directive (91/271/EEC), Pedreiras is expected to provide at least secondary treatment, which is the standard for inland freshwater discharges. The treated effluent from Pedreiras likely discharges into a local watercourse that feeds into the larger river systems of the Leiria region, ultimately reaching the Atlantic Ocean. The plant plays a key role in protecting local water quality and supporting the ecological health of the surrounding watershed.
Environmental context
The plant is located inland, more than 50 km from the coast, and its treated effluent likely discharges into a tributary of the Lis or Alcoa river systems, which flow into the Atlantic Ocean near the town of Nazaré. The region supports diverse aquatic life and is part of a broader coastal watershed that includes agricultural and natural areas. Proper treatment helps prevent nutrient pollution and protects downstream ecosystems.
Frequently asked questions
Pedreiras wastewater treatment plant is located in Casal Boieiro, Pedreiras, in the municipality of Porto de Mós, Leiria district, Portugal.
The plant serves a population of approximately 6,000 people, classifying it as a small to medium agglomeration under EU standards.
The treated effluent is likely discharged into a local watercourse that flows into the Lis or Alcoa river systems, eventually reaching the Atlantic Ocean.
As a Portuguese plant serving 6,000 people, Pedreiras falls under the EU UWWTD (91/271/EEC), which requires at least secondary treatment for inland freshwater discharges to protect water quality.
For agglomerations of this size in Portugal, secondary treatment is the standard requirement under the EU UWWTD, often involving biological processes to reduce organic matter and suspended solids.
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