S_GIOVANNI Wastewater Treatment Plant, Sante Marie, Italy

S_GIOVANNI is a wastewater treatment plant located in Sante Marie, a town in the province of L'Aquila, Abruzzo, Italy. The plant serves a small population of 280 people, reflecting its role in a rural or small community setting. It has a designed capacity of 300 cubic meters per day and currently discharges approximately 55.43 cubic meters per day. The plant provides primary treatment, which involves physical processes such as sedimentation to remove settleable solids. As a small-scale facility in Italy, it operates under the national implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires appropriate treatment for agglomerations of this size. Primary treatment is typical for smaller communities, though more advanced treatment may be required if the receiving water body is sensitive. The treated effluent is discharged into a local watercourse, likely a tributary of the Liri or Salto river system, which eventually flows toward the Tyrrhenian Sea. The plant's location inland and away from coastal areas reduces direct marine impact, but the receiving water body supports local aquatic ecosystems and agricultural water use in the Abruzzo region.

The plant discharges into a local stream that is part of the Liri-Garigliano basin, which flows into the Tyrrhenian Sea. This watershed supports diverse aquatic life and is used for irrigation in the surrounding agricultural areas. The inland location means the effluent has a longer path before reaching the sea, allowing for natural attenuation, but primary treatment may not fully remove nutrients, potentially contributing to eutrophication in downstream water bodies.