DP01524601_ZELO_SURRIGONE Wastewater Treatment Plant, Vermezzo con Zelo, Lombardia

DP01524601_ZELO_SURRIGONE is a wastewater treatment plant located in Vermezzo con Zelo, a municipality in the Lombardia region of northern Italy. The plant serves a population of around 6,326 residents, placing it in the small agglomeration category under Italian and European regulations. As a small-scale facility, it is subject to the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for inland plants serving between 2,000 and 10,000 population equivalents. Typical plants of this size in Italy employ biological treatment followed by sedimentation. The plant's treated effluent is discharged into local waterways that ultimately drain into the Po River basin, which flows into the Adriatic Sea. The Lombardia region is characterized by intensive agriculture and urban development, making proper wastewater treatment essential for protecting water quality in the Po River and its tributaries.

The plant discharges into the local hydrographic network within the Po River basin, one of Italy's most important watersheds. The Po River flows eastward through the Po Valley and empties into the Adriatic Sea near Venice. This region supports diverse aquatic life and is a critical agricultural area. Effective treatment helps prevent nutrient pollution and protects downstream ecosystems, including the Po Delta, which is an ecologically sensitive area.