PERDASDEFOGU Wastewater Treatment Plant, Sardinia, Italy

The PERDASDEFOGU wastewater treatment plant is located in the municipality of Foghesu/Perdasdefogu, in the Ogliastra region of Sardinia, Italy. The plant serves a population of approximately 2,356 residents, reflecting its role as a small-scale municipal facility in a rural area of the island. The plant employs advanced treatment processes, ensuring a high level of effluent quality before discharge. With a designed capacity of 2,500 cubic meters per day and an actual discharge volume of 466.40 cubic meters per day, the facility operates well below its maximum capacity, indicating room for future growth or seasonal variations. As an Italian plant, it operates under the national implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires appropriate treatment for small agglomerations. The treated effluent is discharged into the local watershed, which ultimately drains into the Tyrrhenian Sea. The plant's location inland, more than 10 km from the coast, reduces direct marine impact. The surrounding environment includes Mediterranean scrubland and agricultural areas, and the plant's advanced treatment helps protect local water quality and downstream ecosystems.

The plant discharges into the local drainage network of the Ogliastra region, which flows toward the Tyrrhenian Sea. This coastal sea supports diverse marine life, including seagrass meadows and fish populations. The advanced treatment level ensures that nutrient and pollutant loads are minimized, reducing the risk of eutrophication in the receiving waters. The inland location buffers the immediate coastal zone from direct effluent impacts, but the plant still plays a key role in maintaining the ecological health of the broader watershed.