DP01406106_SONDRIO_TRIASSO Wastewater Treatment Plant, Sondrio, Lombardy, Italy

DP01406106_SONDRIO_TRIASSO is an advanced wastewater treatment plant located in Sondrio, within the Lombardy region of northern Italy. The facility serves a small population of 70 people and is situated in the Alpine valley of Valtellina, near the Adda River. As an advanced treatment plant, it provides a high level of pollutant removal, including nutrients, which is critical for protecting sensitive mountain water bodies. The plant operates under Italy's implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC). For small agglomerations like this one, the directive requires appropriate treatment to meet local water quality standards. The plant's designed capacity of 70 cubic meters per day aligns with the population served, and its advanced treatment level exceeds the minimum secondary treatment typically required for such small communities. The treated effluent from the plant is discharged into the local water system, which ultimately drains into the Adda River. The Adda flows through the Valtellina valley into Lake Como, a major subalpine lake, and eventually joins the Po River, which empties into the Adriatic Sea. The advanced treatment helps protect the sensitive Alpine ecosystem and the downstream lake environment from nutrient pollution.

The plant discharges into the Adda River basin, which flows through the Valtellina valley into Lake Como, a deep subalpine lake with significant ecological and touristic value. The advanced treatment level ensures that nutrient loads are minimized, protecting the lake from eutrophication. The downstream waters support diverse aquatic life and are part of the Po River system, which drains into the northern Adriatic Sea.