Colle Carino Wastewater Treatment Plant, Arpino, Lazio, Italy

Colle Carino is an advanced wastewater treatment plant located in Cività Falconara, Arpino, in the Lazio region of Italy. The plant serves a population of approximately 3,000 people and has a design capacity of 3,000 m³ per day, with an average discharge volume of 593.89 m³ per day. As an advanced treatment facility, Colle Carino goes beyond secondary treatment to remove nutrients and other pollutants, ensuring high-quality effluent. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), Italy requires appropriate treatment for agglomerations of this size, and advanced treatment is typical in sensitive areas to protect water quality. The plant's treated effluent is discharged into the local watershed, which ultimately drains into the Liri River and then to the Tyrrhenian Sea. This contributes to the protection of downstream aquatic ecosystems and supports the ecological health of the region's water bodies.

The plant discharges into the Liri River basin, which flows into the Tyrrhenian Sea. The Liri River supports diverse aquatic life and is an important water resource for the region. Advanced treatment helps minimize nutrient loading and protects downstream habitats from eutrophication.