Overview
Outeiros_Ferreira do Zezere wastewater treatment plant serves Ferreira do Zêzere, Portugal, with a population equivalent of 8,800. The plant discharges into the local watershed, contributing to the protection of the Zêzere River and downstream ecosys
The Outeiros_Ferreira do Zezere wastewater treatment plant is located in Carvalhal, Ferreira do Zêzere, in the Santarém district of central Portugal. It serves a population equivalent of 8,800, placing it in the small-to-medium agglomeration category under Portuguese and EU regulations. As a plant of this scale in Portugal, it is expected to comply with the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations above 2,000 population equivalent. The regulatory framework ensures appropriate treatment standards are met. The plant's treated effluent is discharged into the local environment, ultimately reaching the Zêzere River, a tributary of the Tagus River (Tejo). The Tagus River flows westward into the Atlantic Ocean near Lisbon. The plant plays a key role in protecting water quality in the Zêzere River basin, which supports diverse aquatic life and is used for recreation and agriculture.
Environmental context
The plant discharges into the Zêzere River watershed, which flows into the Tagus River (Tejo) and then into the Atlantic Ocean. The Zêzere River is an important tributary, supporting freshwater ecosystems and providing water for irrigation and human use. The downstream Tagus estuary is a ecologically sensitive area that hosts diverse bird species and fish populations. The plant's operations help maintain water quality in this river system, reducing nutrient and pollutant loads that could impact downstream habitats.
Frequently asked questions
The plant is located in Carvalhal, Ferreira do Zêzere, in the Santarém district of central Portugal.
The plant serves a population equivalent of 8,800, classifying it as a small-to-medium agglomeration under EU regulations.
The treated effluent is discharged into the local watershed, which drains into the Zêzere River, a tributary of the Tagus River, and ultimately reaches the Atlantic Ocean.
As a Portuguese plant serving over 2,000 population equivalent, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment and, where necessary, tertiary treatment for sensitive areas.
Under the EU Urban Waste Water Treatment Directive, plants serving between 2,000 and 10,000 population equivalent are required to have secondary treatment. In sensitive areas, additional nutrient removal may be required.
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