DP01510301_GAGGIANO Wastewater Treatment Plant, Vigano Certosino, Lombardia

DP01510301_GAGGIANO is a wastewater treatment plant located in Vigano Certosino, a frazione of Gaggiano, in the Lombardia region of northern Italy. The plant serves a population of around 14,437, placing it in the medium-agglomeration category under EU classification. It is situated in the Po Valley, a densely populated and agriculturally intensive area. As an Italian plant serving a population between 10,000 and 150,000, DP01510301_GAGGIANO is subject to the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment as a minimum. For agglomerations of this size discharging into sensitive areas, tertiary treatment may be mandated. The regulatory framework ensures compliance with national and EU standards. The treated effluent from the plant is discharged into local watercourses that ultimately drain into the Po River, Italy's longest river, which flows eastward into the Adriatic Sea. The Po basin supports extensive agriculture, industry, and biodiversity, making effective wastewater treatment critical for protecting downstream water quality and ecosystems.

The plant discharges into the Po River basin, which flows through northern Italy and empties into the Adriatic Sea. The Po River and its tributaries support diverse aquatic life, including fish species such as sturgeon and eel, and provide irrigation for the Po Valley, a major agricultural region. Effective treatment helps prevent nutrient pollution that could cause eutrophication in the Adriatic coastal zone.