Contrada La Mola Wastewater Treatment Plant, La Forma, Lazio, Italy

Contrada La Mola is a wastewater treatment facility located in La Forma, a locality within the municipality of Serrone, in the province of Frosinone, Lazio, Italy. The plant serves a small population of around 900 residents, reflecting its role in a rural or peri-urban setting. As part of Italy's wastewater infrastructure, it contributes to local sanitation and environmental protection. The plant employs advanced treatment processes, which go beyond the secondary treatment standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. Advanced treatment typically includes nutrient removal (nitrogen and phosphorus) and additional polishing steps, ensuring high-quality effluent. The plant's designed capacity is 900 cubic meters per day, and it currently discharges an average volume of 178.17 cubic meters per day, indicating operational headroom. The treated effluent is discharged into local water bodies that ultimately drain into the Tyrrhenian Sea via the Tiber River basin. The plant's advanced treatment helps protect downstream aquatic ecosystems, including the Tiber River and its delta, which support diverse fish and bird species. By reducing nutrient loads, the plant mitigates eutrophication risks in the coastal marine environment.

The plant discharges into local streams that feed into the Tiber River basin, which flows through Lazio and empties into the Tyrrhenian Sea near Rome. The Tiber River supports a variety of aquatic life and is an important ecological corridor for migratory birds. The advanced treatment at Contrada La Mola helps reduce nutrient pollution, protecting downstream water quality and the sensitive coastal ecosystem of the Tyrrhenian Sea.