Overview
Fronteira wastewater treatment plant serves 2,300 people in Portalegre, Portugal. The secondary treatment facility has a designed capacity of 3,000 m³/day and discharges 383.48 m³/day.
The Fronteira wastewater treatment plant is located in the town of Fronteira, Portalegre district, Portugal. It serves a population of approximately 2,300 residents, classifying it as a small agglomeration under Portuguese and EU regulations. The plant provides secondary treatment, which is the minimum standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for freshwater discharges from agglomerations of this size. With a designed capacity of 3,000 m³/day and an average daily flow of 383.48 m³, the facility operates well within its capacity. The treated effluent is discharged into a local watercourse that eventually drains into the Tagus River basin, one of the Iberian Peninsula's major river systems. The downstream environment supports diverse aquatic life and is important for regional water resources.
Environmental context
The plant's discharge enters a tributary of the Tagus River, which flows westward through Portugal to the Atlantic Ocean near Lisbon. The Tagus basin supports diverse aquatic ecosystems and is a critical water source for agriculture and urban areas. The secondary treatment helps protect downstream water quality in this ecologically sensitive region.
Frequently asked questions
The Fronteira wastewater treatment plant is located in Fronteira, Portalegre district, Portugal, at coordinates 39.055, -7.658.
The plant serves approximately 2,300 residents, classifying it as a small agglomeration under EU regulations.
The plant discharges treated effluent into a local watercourse that flows into the Tagus River basin, eventually reaching the Atlantic Ocean.
The plant provides secondary treatment, meeting the minimum EU Urban Waste Water Treatment Directive requirements for small agglomerations discharging to freshwater.
The plant has a designed capacity of 3,000 m³ per day, with an average daily flow of 383.48 m³, indicating significant spare capacity.
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