IMPIANTO C DA ZADRAFFI Wastewater Treatment Plant, Palazzo Adriano, Sicily

IMPIANTO C DA ZADRAFFI is a municipal wastewater treatment plant located in Palazzo Adriano, a town in the province of Palermo, Sicily, Italy. The plant serves a population of approximately 3,853 people, classifying it as a small agglomeration under Italian and EU regulations. It is situated inland, more than 10 km from the coast, and operates within the Mediterranean climate zone of southern Italy. The plant provides secondary treatment, which is the minimum standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for freshwater discharges from agglomerations of this size. The designed capacity is 4,000 m³/day, with a reported discharge volume of 762.76 m³/day, indicating operational headroom. As an Italian facility, it is subject to national implementation of the directive, overseen by regional environmental agencies (ARPA Sicilia) and local authorities. The treated effluent is discharged into local watercourses that drain into the Mediterranean Sea, likely via the Platani River basin or smaller coastal streams. The receiving environment supports diverse aquatic life and is part of Sicily's inland watershed, which ultimately reaches the Mediterranean. The plant's operation helps protect downstream water quality and the ecological health of the region's rivers and coastal areas.

The plant discharges into local watercourses that flow through the Sicilian interior, eventually reaching the Mediterranean Sea. The region's watershed supports a variety of freshwater species and contributes to the ecological balance of the Mediterranean coastal zone. Downstream environments include seasonal streams and agricultural areas, where treated effluent helps maintain base flows and water quality for irrigation and wildlife.