Overview
Sousa wastewater treatment plant serves Lousada, Portugal, with a designed capacity of 1.00 and a population equivalent of 35,000. It operates under the EU Urban Waste Water Treatment Directive.
The Sousa wastewater treatment plant is located in Lodares, Lousada, in the Porto district of Portugal. It serves a population equivalent of 35,000, classifying it as a medium agglomeration under EU regulations. The plant is situated inland, away from coastal areas, and its operations are part of the regional wastewater infrastructure managed by Portuguese water authorities. As a plant in Portugal, Sousa is subject to the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment for agglomerations of this size. The directive also requires more advanced treatment if the receiving waters are designated as sensitive areas. The plant's design capacity of 1.00 suggests it is sized to handle the local wastewater load. The treated effluent from Sousa is discharged into the local watershed, which ultimately drains into the Douro River basin. The Douro River flows westward through northern Portugal and empties into the Atlantic Ocean near Porto. The river supports diverse aquatic life and is an important water resource for the region. The plant's operations help protect downstream water quality and the ecological health of the Douro estuary.
Environmental context
Sousa plant discharges into the Douro River basin, which flows into the Atlantic Ocean. The Douro River supports diverse aquatic ecosystems and is a vital water source for northern Portugal. The plant's treatment helps maintain water quality in the river and its estuary, which is ecologically sensitive due to its role as a migratory corridor for fish and a habitat for aquatic species.
Frequently asked questions
The Sousa wastewater treatment plant is located in Lodares, Lousada, in the Porto district of Portugal.
The Sousa plant serves a population equivalent of 35,000 people.
The treated effluent from Sousa is discharged into the local watershed, which drains into the Douro River basin and eventually reaches the Atlantic Ocean.
As a plant serving 35,000 PE, Sousa is classified as a medium agglomeration under the EU UWWTD, which requires secondary treatment as a minimum standard.
In Portugal, plants serving 35,000 PE typically provide secondary treatment, with possible tertiary treatment if the receiving waters are sensitive areas under the EU UWWTD.
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