Santo Stefano in Aspromonte Mannolello Wastewater Treatment Plant, Reggio di Calabria

Santo Stefano in Aspromonte Mannolello is a wastewater treatment plant located in the Amendolea area of Reggio di Calabria, in the Calabria region of southern Italy. It serves a small population of 750 people, reflecting its role in a rural or peri-urban community within the Aspromonte mountain foothills. The plant provides secondary treatment, which is the standard biological treatment required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations with a population equivalent between 2,000 and 10,000. Although the plant serves fewer than 2,000 people, it still meets secondary treatment standards, ensuring organic matter and suspended solids are reduced before discharge. The designed capacity is 750 cubic meters per day, matching the population served. The treated wastewater is discharged into the local environment, likely via a stream or direct outfall to the Ionian Sea, given the plant's proximity to the coast (within 10 km). The receiving waters ultimately drain into the Ionian Sea, which is part of the Mediterranean basin. This coastal discharge requires careful management to protect marine water quality and local ecosystems.

The plant discharges into a coastal watershed that flows into the Ionian Sea, a semi-enclosed basin of the Mediterranean. The area supports diverse marine life, including seagrass meadows and fish spawning grounds. The proximity to the coast means that even small discharges can affect nearshore water quality, particularly during tourist seasons when coastal pressures increase.