MASSAZZA Wastewater Treatment Plant, Massazza, Piemonte, Italy

The MASSAZZA wastewater treatment plant is located in Massazza, a municipality in the province of Biella, Piemonte, Italy. The plant serves a population of approximately 30,921, classifying it as a medium-sized agglomeration under EU regulations. It is situated inland, more than 50 km from the coast, and its treated effluent is discharged into local water bodies that ultimately drain into the Po River basin. As an Italian plant serving a population equivalent of over 10,000, MASSAZZA is subject to the EU Urban Waste Water Treatment Directive (91/271/EEC). This directive requires secondary treatment for all discharges from agglomerations of this size, with more stringent tertiary treatment if the receiving waters are designated as sensitive areas. It is expected to comply with national regulations implementing the directive. The plant's discharge contributes to the local watershed, which is part of the Po River basin, the largest river system in Italy. The Po River flows eastward into the Adriatic Sea, supporting diverse aquatic life and agricultural activities. Proper treatment at MASSAZZA helps protect downstream water quality and the ecological health of the Po basin.

The MASSAZZA plant discharges into local waterways that are part of the Po River basin. The Po River is Italy's longest river, flowing into the Adriatic Sea and supporting a rich ecosystem, including important fish species and migratory birds. The basin is heavily agricultural and industrial, making effective wastewater treatment critical to prevent nutrient pollution and maintain water quality in the river and its delta.