Almargem Wastewater Treatment Plant, Tavira, Portugal

Almargem is a wastewater treatment plant serving the municipality of Tavira in the Algarve region of southern Portugal. The plant handles wastewater from a population equivalent of 48,000, placing it in the medium agglomeration category under EU regulations. Its location near the Atlantic coast influences its operational and environmental context. As a Portuguese facility, Almargem operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size. The plant's designed capacity is 1.00 (likely in thousands of cubic meters per day), indicating a facility sized for the local population. Compliance with the directive ensures appropriate treatment before discharge. The treated effluent from Almargem is discharged into the local environment, ultimately reaching the Atlantic Ocean via the Gilão River or coastal waters. The Algarve coast is ecologically sensitive, supporting diverse marine life and important habitats. The plant plays a key role in protecting water quality in this region, which is vital for both tourism and local ecosystems.

Almargem's treated wastewater discharges into the Gilão River, which flows through Tavira and into the Ria Formosa lagoon system before reaching the Atlantic Ocean. The Ria Formosa is a coastal lagoon of high ecological importance, supporting diverse aquatic life and serving as a critical migratory corridor for birds. The plant's operations help maintain water quality in this sensitive coastal environment, which is essential for local biodiversity and the region's tourism-dependent economy.