Overview
Malveira wastewater treatment plant serves Mafra, Portugal, with a designed capacity of 1.00 m³/day. It supports a population of 20,000 and is located within 50 km of the coast.
Malveira wastewater treatment plant is located in Mafra, Lisbon District, Portugal, serving a population of 20,000. The facility is situated inland but within 50 km of the Atlantic coast, reflecting the region's suburban and rural character. With a designed capacity of 1.00 m³/day, the plant operates under Portugal's implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC). For agglomerations of this scale (20,000 population equivalent), the directive requires secondary treatment as a minimum, with tertiary treatment in sensitive areas. It is expected to meet these regulatory standards. The treated effluent likely discharges into local watercourses that drain toward the Atlantic Ocean, contributing to the protection of coastal water quality. The plant plays a key role in managing wastewater from Mafra and surrounding areas, supporting public health and environmental sustainability in the Lisbon region.
Environmental context
The plant is located in the Lisbon District, within the Tagus River basin, which ultimately drains into the Atlantic Ocean. The receiving waters support diverse aquatic life and are important for regional biodiversity. The proximity to the coast (within 50 km) means that effective treatment is crucial to prevent nutrient loading and protect marine ecosystems, including coastal habitats and fisheries.
Frequently asked questions
The Malveira wastewater treatment plant is located at EN 116, Malveira e São Miguel de Alcainça, Mafra, Lisbon District, Portugal.
The plant serves a population of approximately 20,000 people in the Mafra area.
The treated effluent from the Malveira plant is discharged into local watercourses that drain into the Tagus River basin and ultimately the Atlantic Ocean.
The plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of 20,000 population equivalent, with potential tertiary treatment in sensitive areas.
For a plant serving 20,000 people in Portugal, secondary treatment is the minimum requirement under EU directives, often including biological processes and nutrient removal to protect coastal waters.
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