DP02005301_ROVERBELLA Wastewater Treatment Plant, Castelletto, Lombardia

DP02005301_ROVERBELLA is an advanced wastewater treatment plant located in Castelletto, a frazione of Roverbella in the province of Mantova, Lombardia, Italy. The plant serves a population of approximately 3,954 and has a designed capacity of 4,200 cubic meters per day, with a current discharge volume of 782.75 cubic meters per day. As an advanced treatment facility, the plant goes beyond secondary treatment to remove nutrients and other pollutants, meeting the stringent requirements of the EU Urban Waste Water Treatment Directive (91/271/EEC). For agglomerations of this size, the directive mandates secondary treatment, but the advanced level indicates that the plant likely operates in a sensitive area requiring tertiary treatment. The plant discharges treated wastewater into local watercourses that eventually drain into the Po River basin, one of Italy's most important hydrological systems. The Po River flows eastward into the Adriatic Sea, supporting diverse aquatic life and agricultural activities in the Po Valley. The advanced treatment helps protect downstream ecosystems and water quality.

The plant's treated effluent enters the local drainage network within the Po River basin, which is the largest river system in Italy. The Po River flows approximately 652 km from the Alps to the Adriatic Sea, supporting extensive agriculture and wetlands. The advanced treatment level is crucial for reducing nutrient loads that could contribute to eutrophication in the Adriatic Sea, a semi-enclosed basin sensitive to algal blooms.