CASTELLUCCIO Wastewater Treatment Plant, Collecorvino, Italy

The CASTELLUCCIO wastewater treatment plant is located in Collecorvino, a town in the province of Pescara, Abruzzo region, Italy. The facility serves a population of approximately 2,700 people, classifying it as a small agglomeration under Italian and EU regulations. It operates secondary treatment, which is the standard required by the EU Urban Waste Water Treatment Directive for inland freshwater discharges from agglomerations of this size. As a secondary treatment plant, CASTELLUCCIO employs biological processes to reduce organic matter and suspended solids. The plant has a designed capacity of 3,000 cubic meters per day and currently treats an average daily flow of 657.53 cubic meters, indicating ample reserve capacity. The facility is situated near the Adriatic coast, within 10 km of the sea, which influences its discharge requirements and environmental sensitivity. The treated effluent from CASTELLUCCIO ultimately reaches the Adriatic Sea via local watercourses. The Adriatic Sea is a semi-enclosed basin with limited water exchange, making it sensitive to nutrient inputs. The plant's secondary treatment helps protect coastal water quality and marine ecosystems, including seagrass meadows and fish nursery areas along the Abruzzo coastline.

The CASTELLUCCIO plant discharges treated wastewater into local streams that flow into the Adriatic Sea near the coast of Abruzzo. The Adriatic Sea is a shallow, semi-enclosed basin with limited tidal flushing, making it vulnerable to eutrophication from nutrient loads. The coastal zone supports diverse marine life, including Posidonia oceanica seagrass meadows and important fish spawning grounds. The plant's secondary treatment reduces organic and nutrient pollution, helping to maintain water quality in this ecologically sensitive coastal environment.