IMPIANTO C DA INDIRIZZO Wastewater Treatment Plant, Piazza Armerina, Sicily

IMPIANTO C DA INDIRIZZO is a municipal wastewater treatment plant located in Piazza Armerina, in the province of Enna, Sicily, Italy. The plant serves a population of approximately 20,700 residents, making it a medium-sized agglomeration under Italian and EU regulations. It is situated inland, more than 10 km from the coast, and operates with advanced treatment technology. As an advanced treatment facility, the plant goes beyond secondary treatment to remove nutrients such as nitrogen and phosphorus, which is typical for plants discharging into sensitive areas under the EU Urban Waste Water Treatment Directive (91/271/EEC). The designed capacity of 22,300 m³/day indicates the plant is sized to handle current and future loads. The plant's discharge volume is reported as 0.01 million m³/year, suggesting efficient water management. The treated effluent from the plant is discharged into local watercourses that eventually drain into the Mediterranean Sea. The plant plays a crucial role in protecting the water quality of the surrounding watershed, which supports diverse aquatic life and agricultural activities in the region. By employing advanced treatment, the facility helps reduce nutrient loading and maintain the ecological health of downstream environments.

The plant discharges into local streams that flow through the interior of Sicily, eventually reaching the Mediterranean Sea. The watershed supports a mix of agricultural and natural habitats, and the advanced treatment helps minimize nutrient pollution, protecting downstream aquatic ecosystems and coastal waters from eutrophication.