Serrastretta Angoli Wastewater Treatment Plant, Calabria, Italy

Serrastretta Angoli is an advanced wastewater treatment plant located in Serrastretta, in the Calabria region of southern Italy. The facility serves a small population of 1,077 residents, reflecting its role in a rural or small-town setting. As an advanced treatment plant, it goes beyond secondary treatment to remove nutrients and other pollutants, ensuring high-quality effluent. The plant has a designed capacity of 1,000 cubic meters per day and currently discharges 213.21 cubic meters of treated wastewater daily, indicating significant spare capacity. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), small agglomerations like this are required to provide appropriate treatment, and the advanced level here exceeds the minimum secondary treatment standard, likely due to the sensitivity of the receiving environment. The treated effluent is discharged into local watercourses that drain into the Tyrrhenian Sea or Ionian Sea, given Calabria's peninsular geography. The advanced treatment helps protect downstream aquatic ecosystems and supports water quality in the region's coastal waters, which are important for tourism and biodiversity.

The plant discharges into small streams in the Calabrian Apennines, which flow toward the Tyrrhenian Sea or Ionian Sea. The region's steep terrain and Mediterranean climate mean streams can be seasonal, making consistent treatment crucial. The advanced treatment reduces nutrient loading, protecting downstream coastal ecosystems that support diverse marine life and are important for local fisheries and tourism.