Castelluccio Valmaggiore Wastewater Treatment Plant, Puglia, Italy

The Castelluccio Valmaggiore wastewater treatment plant is located in the Puglia region of southern Italy, serving the town of Castelluccio Valmaggiore in the province of Foggia. The plant provides secondary treatment for a population of 2,019, with a designed capacity of 3,449 cubic meters per day and a current discharge volume of 302 cubic meters per day. As an Italian wastewater treatment plant serving a small agglomeration, it operates under the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires secondary treatment for inland discharges from agglomerations of this size. The plant's secondary treatment level meets the directive's minimum standards for biological treatment. The treated effluent is discharged into local watercourses that drain into the Adriatic Sea via the Candelaro River and the Gulf of Manfredonia. The surrounding area is characterized by agricultural land and the Daunian Mountains, with the plant playing a key role in protecting local water quality and downstream ecosystems.

The plant discharges into the Candelaro River basin, which flows into the Gulf of Manfredonia on the Adriatic Sea. This coastal area supports diverse aquatic life and is important for migratory birds. The secondary treatment helps reduce organic pollution and nutrient loads, protecting the sensitive marine environment of the Adriatic Sea.