DP01517101_PESCHIERA_BORROMEO_L1 Wastewater Treatment Plant, San Donato Milanese, Lombardy

DP01517101_PESCHIERA_BORROMEO_L1 is a major wastewater treatment facility located in San Donato Milanese, within the metropolitan area of Milan in Lombardy, Italy. The plant serves a population equivalent of approximately 339,520, classifying it as a large agglomeration under EU regulations. Its location in the Po Valley places it in a densely populated and industrially active region. As a large agglomeration, the plant is expected to provide at least secondary treatment under the EU Urban Waste Water Treatment Directive (91/271/EEC), with tertiary treatment required if discharging into sensitive areas. The regulatory framework ensures compliance with stringent standards for nutrient removal and effluent quality. The treated effluent from this plant likely discharges into the Lambro River or its tributaries, which flow into the Po River and eventually the Adriatic Sea. The Po River basin is ecologically significant, supporting diverse aquatic life and serving as a critical water resource for agriculture and industry in northern Italy. The plant plays a key role in protecting this watershed from nutrient pollution and pathogens.

The plant's treated effluent is expected to enter the Lambro River, a tributary of the Po River, which flows eastward into the Adriatic Sea. The Po River basin is one of the most important ecological and economic regions in Italy, supporting extensive agriculture, industry, and biodiversity. The downstream environment includes sensitive habitats such as the Po Delta, which is a key stopover for migratory birds and supports fish species like sturgeon and eel. Effective wastewater treatment is critical to prevent eutrophication and maintain water quality in this heavily utilized watershed.