Carsoli Nucleo Industriale Wastewater Treatment Plant, Carsoli, Italy

Carsoli Nucleo Industriale is a wastewater treatment plant located in the industrial area of Carsoli, in the Abruzzo region of central Italy. The plant serves a small population of 420 people, reflecting its role in treating wastewater from the local industrial nucleus and surrounding residential areas. It operates under Italy's implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC), which sets treatment standards based on agglomeration size and receiving water sensitivity. The plant provides secondary treatment, a biological process that removes organic matter and suspended solids. With a designed capacity of 1,500 m³/day and an actual discharge volume of 83.15 m³/day, the plant operates well below its capacity, indicating it is sized for future growth or seasonal peaks. As a small agglomeration (under 2,000 population equivalent), the EU directive requires appropriate collection and treatment, which this plant fulfills. The treated effluent is discharged into the local drainage network, which ultimately flows into the Turano River, a tributary of the Velino River, part of the Tiber River basin. The Tiber River carries the water to the Tyrrhenian Sea. The plant's location inland, away from the coast, reduces direct marine impact, but its discharge supports the ecological health of the Turano River and downstream aquatic habitats.

The plant discharges into the Turano River, a tributary of the Velino River, which flows into the Tiber River and eventually reaches the Tyrrhenian Sea. The Turano River supports diverse aquatic life and is part of a regional watershed that provides water for agriculture and ecosystems. The secondary treatment helps protect water quality in this inland basin, reducing organic pollution and maintaining ecological balance.