Aljezur Wastewater Treatment Plant: Serving Aljezur, Portugal

The Aljezur wastewater treatment plant is a municipal facility serving the town of Aljezur in the Faro district of southern Portugal. With a designed capacity of 1.00 volume unit and a population served of 6,500, it is a small-scale plant typical of rural coastal communities in the Algarve region. The plant is situated near the Atlantic coast, within 50 km of the shoreline, and its operations are subject to Portuguese and EU environmental regulations. As a plant serving fewer than 10,000 people, it falls under the EU Urban Waste Water Treatment Directive (91/271/EEC) requirements for small agglomerations, which mandate appropriate treatment to protect sensitive coastal waters. Plants of this scale in Portugal typically employ secondary or tertiary treatment to meet discharge standards for coastal areas. The designed capacity suggests the plant is sized to handle the local population's wastewater load. The plant's treated effluent is discharged into the local watershed, which ultimately drains into the Atlantic Ocean. The receiving water bodies include small streams and the nearby Ribeira de Aljezur, which flows into the Atlantic near the Costa Vicentina, a region known for its biodiversity and protected coastal landscapes. The plant plays a key role in maintaining water quality in this ecologically sensitive area, supporting marine life and recreational uses.

The Aljezur plant discharges into the Ribeira de Aljezur, a small coastal river that flows into the Atlantic Ocean near the Costa Vicentina. This area is part of the Southwest Alentejo and Vicentine Coast Natural Park, a region with high ecological value supporting diverse marine and bird species. The plant's operations help protect downstream water quality in a sensitive coastal environment.