VERRES Wastewater Treatment Plant, Issogne, Valle d'Aosta, Italy

VERRES is a wastewater treatment plant located in Issogne, in the Valle d'Aosta region of northwestern Italy. The plant serves a population of approximately 3,200 people, reflecting its role in treating municipal wastewater from the local community. The plant provides secondary treatment, which is the standard biological treatment stage required under 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 an average daily discharge of 633.49 m³/day, the plant operates well below its capacity, indicating room for future growth or seasonal variations. The treated effluent is discharged into the local watershed, which ultimately drains into the Dora Baltea River, a tributary of the Po River. The Po River flows eastward across northern Italy into the Adriatic Sea. The plant's operations help protect the water quality of these downstream water bodies and support the ecological health of the Po basin.

The plant discharges into the Dora Baltea River, which flows through the Aosta Valley and joins the Po River near Turin. The Po River is Italy's longest river and its delta is an ecologically sensitive area supporting diverse aquatic life and migratory birds. The secondary treatment provided by VERRES reduces organic pollutants and suspended solids, helping to maintain water quality in this important river system.