CASTAGNARO_VIA_S_ANNA Wastewater Treatment Plant, Menà, Veneto, Italy

CASTAGNARO_VIA_S_ANNA is a wastewater treatment plant located in the hamlet of Sant'Anna, within the municipality of Castagnaro, in the Veneto region of northern Italy. The plant serves a small population of 720 residents, reflecting its role in a rural or small-town setting. It is situated in the Po Valley, an area characterized by intensive agriculture and a dense network of canals and rivers. The plant employs advanced treatment processes, which go beyond the secondary treatment required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. The designed capacity of 1000 cubic meters per day indicates that the facility has some reserve capacity for future growth. The actual discharge volume of 142.53 cubic meters per day suggests that the plant operates well below its design capacity. The treated effluent is discharged into the local drainage network, which ultimately flows into the Adige River, one of Italy's major rivers. The Adige River drains into the Adriatic Sea, making the plant's operations relevant to the ecological health of the Po Delta and the northern Adriatic coastal zone. Advanced treatment helps protect these downstream environments from nutrient pollution and other contaminants.

The plant discharges into the local canal system, which feeds into the Adige River. The Adige flows through the Veneto region and empties into the Adriatic Sea near the Po Delta. This area supports diverse aquatic life and is an important migratory corridor for birds. The advanced treatment level helps reduce nutrient loads, mitigating eutrophication risks in the sensitive Adriatic coastal ecosystem.