SISSA Wastewater Treatment Plant, Torricella, Emilia-Romagna, Italy

SISSA is a wastewater treatment plant located in Torricella, a locality within the municipality of Sissa Trecasali in the province of Parma, Emilia-Romagna, Italy. The plant serves a population of approximately 2,938 people, placing it in the small agglomeration category under Italian and EU regulations. The plant employs advanced treatment processes, which go beyond the secondary treatment standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for inland areas. Its designed capacity is 4,500 m³/day, and the current discharge volume is 505.21 m³/day, indicating significant spare capacity. The treated effluent is discharged into the local water system, which ultimately drains into the Po River basin. The Po River is Italy's longest river and flows into the Adriatic Sea, supporting diverse aquatic life and agricultural activities in the Po Valley. Advanced treatment helps protect this ecologically important watershed from nutrient pollution.

The plant discharges into the Po River basin, which flows eastward through northern Italy and empties into the Adriatic Sea. The Po River supports a rich ecosystem, including migratory fish species and extensive wetlands. Advanced treatment at SISSA reduces nutrient loads, helping to prevent eutrophication in the Adriatic coastal zone.