IMPIANTO C DA BIRRUSO Wastewater Treatment Plant, Capizzi, Sicily

IMPIANTO C DA BIRRUSO is a municipal wastewater treatment plant located in Capizzi, a town in the province of Messina, Sicily, Italy. The plant serves a population equivalent of approximately 3,610 residents, classifying it as a small agglomeration under Italian and EU regulations. It is situated inland, more than 10 km from the coast, and discharges treated effluent into local watercourses. The plant provides secondary treatment, which is the minimum standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for freshwater discharges from agglomerations of this size. The designed capacity is 3,800 m³/day, with an actual discharge volume of 714.65 m³/day, indicating operational headroom. As a secondary treatment facility, it typically employs biological processes to reduce organic matter and suspended solids before discharge. The treated effluent is released into the local watershed, which ultimately drains into the Tyrrhenian Sea via the northern Sicilian river network. The surrounding area is characterized by mountainous terrain and Mediterranean climate. The plant plays a key role in protecting local water quality and downstream ecosystems, including coastal waters that support diverse marine life and tourism.

The plant discharges into the local drainage network that flows northward through the Nebrodi Mountains toward the Tyrrhenian Sea. This coastal region supports important fisheries and marine habitats. The secondary treatment provided helps reduce nutrient loading and organic pollution, safeguarding the ecological health of both freshwater streams and the downstream marine environment, which is sensitive to eutrophication.