Cala di Volpe Wastewater Treatment Plant, Capriccioli, Sardinia

Cala di Volpe is a wastewater treatment plant located in Capriccioli, within the municipality of Arzachena in the Gallura region of northeastern Sardinia, Italy. The plant serves a population of approximately 3,500 people, typical of a small coastal agglomeration in a popular tourist area. Operating at advanced treatment level, the plant is designed with a capacity of 3,500 cubic meters per day and currently discharges 692.88 cubic meters of treated wastewater daily. As an Italian facility, it operates under the national implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires advanced treatment for discharges into sensitive areas such as coastal zones. The treated effluent is released into the local coastal environment of the Tyrrhenian Sea, part of the Mediterranean Sea. The area supports diverse marine life and is near ecologically sensitive coastal habitats, including seagrass meadows and rocky reefs that benefit from the high-quality effluent provided by advanced treatment.

The plant discharges into the coastal waters of the Tyrrhenian Sea near the Costa Smeralda, a region known for its clear waters and marine biodiversity. The local watershed includes small seasonal streams that drain into the sea, supporting coastal wetlands and seagrass beds. Advanced treatment helps protect these sensitive ecosystems from nutrient enrichment and pollution.