DP09703901_IMBERSAGO Wastewater Treatment Plant, Imbersago, Lombardy

DP09703901_IMBERSAGO is an advanced wastewater treatment plant located in Imbersago, a town in the Lombardy region of northern Italy. The plant serves a population of approximately 2,971 people, reflecting its role as a small-scale municipal facility in the Adda River valley. Its location along the Sentiero ciclo-pedonale dell'Adda places it within a scenic and ecologically sensitive corridor. The plant employs advanced treatment processes, which go beyond the secondary treatment standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. With a designed capacity of 4,000 m³/day and a current discharge volume of 588.15 m³/day, the facility operates well below its capacity, indicating room for future growth or seasonal variability. As an Italian plant, it falls under national regulations implementing the EU directive, with oversight from regional environmental authorities. The treated effluent is discharged into the Adda River, a major tributary of the Po River, which ultimately flows into the Adriatic Sea. The Adda River supports diverse aquatic life and is an important water resource for irrigation and recreation in Lombardy. The plant's advanced treatment helps protect water quality in this river system, reducing nutrient loads and safeguarding downstream ecosystems.

The plant discharges into the Adda River, which flows through the Po Valley and joins the Po River before reaching the Adriatic Sea. The Adda River is a key watercourse in Lombardy, supporting fish populations such as barbel and chub, and providing habitat for migratory birds. The advanced treatment level helps minimize eutrophication risks in the downstream Po River delta and coastal Adriatic waters.