Villanova Monteleone Wastewater Treatment Plant (Loc. Sas Castangias), Sardinia

The Villanova Monteleone wastewater treatment plant (Loc. Sas Castangias) is located in the municipality of Villanova Monteleone, in the province of Sassari, Sardinia, Italy. The plant serves a population of 2,637 and operates with advanced treatment processes, ensuring high-quality effluent standards. With a designed capacity of 10,677.00 cubic meters per day and an actual discharge volume of 522.03 cubic meters per day, the plant operates well below its capacity. As an Italian facility, it falls under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires appropriate treatment for discharges into sensitive areas. The advanced treatment level suggests the plant likely employs nutrient removal or other tertiary processes to protect the local environment. The plant discharges into the local watershed, which ultimately drains into the Mediterranean Sea. Sardinia's coastal and inland waters support diverse aquatic life, and the advanced treatment helps minimize nutrient loading and protect downstream ecosystems, including seagrass meadows and marine habitats.

The plant discharges into the watershed of northwestern Sardinia, which flows into the Mediterranean Sea near the Gulf of Asinara. This coastal region supports ecologically sensitive marine habitats, including Posidonia oceanica seagrass meadows, which are vital for biodiversity and carbon sequestration. Advanced treatment reduces nutrient and pollutant loads, helping to protect these downstream environments from eutrophication and degradation.