BARATILI SAN PIETRO Wastewater Treatment Plant, Sardinia, Italy

The BARATILI SAN PIETRO wastewater treatment plant is located in the municipality of Baratili San Pietro (Boàtiri), in the province of Oristano, Sardinia, Italy. It serves a small population of 1,251 residents, reflecting the rural character of the area. The plant is situated inland, more than 10 km from the coast, and operates under Italian and European wastewater regulations. The plant provides advanced treatment, which goes beyond the secondary treatment required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. It has a designed capacity of 1,740 m³/day and currently discharges 247.65 m³/day, indicating significant spare capacity. Advanced treatment typically includes nutrient removal or disinfection. The treated effluent is discharged into local water bodies that eventually drain into the Gulf of Oristano, part of the Mediterranean Sea. The plant plays a key role in protecting the region's water quality, supporting agricultural activities and the ecological health of the surrounding wetlands and coastal areas.

The plant's discharge enters the local drainage network, which flows into the Tirso River or nearby coastal lagoons before reaching the Gulf of Oristano. This area supports diverse aquatic life and is important for migratory birds. The advanced treatment helps minimize nutrient loading, protecting the sensitive marine environment of the Mediterranean Sea.