Mirabella Eclano Impianto Frazione Passo - Secondary Wastewater Treatment Plant in Campania, Italy

Mirabella Eclano Impianto Frazione Passo is a municipal wastewater treatment plant located in the Pianopantano area of Mirabella Eclano, in the province of Avellino, Campania, Italy. The plant serves a small population of approximately 2,000 residents, reflecting its role in a rural or suburban setting within the Terre dell'Ufita region. The plant provides secondary treatment, which is the standard biological treatment required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations with a population equivalent between 2,000 and 10,000. Its designed capacity of 2,000 cubic meters per day aligns with the population served, and the current discharge volume of 395.93 cubic meters per day indicates operational activity. The treated effluent is discharged into the local water system, which ultimately drains into the Ufita River, a tributary of the Calore Irpino River, and then into the Volturno River, which flows into the Tyrrhenian Sea. The plant plays a key role in protecting the water quality of this river basin, supporting aquatic life and downstream ecosystems.

The plant discharges into the Ufita River basin, which flows into the Calore Irpino River, a major tributary of the Volturno River. The Volturno River empties into the Tyrrhenian Sea near the Gulf of Gaeta. This watershed supports diverse aquatic habitats and is important for regional biodiversity, including fish species and migratory birds. The secondary treatment provided helps reduce nutrient loads and organic pollutants, mitigating eutrophication risks in the downstream river and coastal waters.