IMPIANTO C DA NOCE Wastewater Treatment Plant, Marianopoli, Sicily

IMPIANTO C DA NOCE is a wastewater treatment plant located in Marianopoli, a town in the province of Caltanissetta, Sicily, Italy. The plant was designed to serve the local community with a capacity of 2600 cubic meters per day, though it is currently closed. As a secondary treatment facility, the plant would have provided biological treatment to reduce organic matter and suspended solids. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), plants serving agglomerations of this scale are typically required to meet secondary treatment standards. The plant's closure may reflect upgrades or consolidation of regional infrastructure. The plant is situated inland, more than 10 km from the coast, and its treated effluent would have discharged into local watercourses that drain toward the Mediterranean Sea. The region's water bodies support diverse aquatic life and are part of Sicily's sensitive hydrological network.

The plant is located in the interior of Sicily, within the drainage basin of the Imera Meridionale river system, which flows into the Mediterranean Sea near Licata. The local watershed supports agricultural and natural habitats, and the downstream environment includes coastal zones that are ecologically sensitive. Proper wastewater treatment is essential to protect water quality in these receiving waters.