Impianto C da Passo Palermo Wastewater Treatment Plant, Lercara Friddi, Sicily

Impianto C da Passo Palermo is a wastewater treatment plant located in Lercara Friddi, a town in the province of Palermo, Sicily, Italy. The plant serves a population of 7,700, classifying it as a small agglomeration under Italian and EU regulations. It is situated inland, more than 50 km from the coast, and its operations are part of the regional wastewater management infrastructure for the Sicilian interior. As a small agglomeration, the plant is subject to the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires appropriate treatment before discharge. Plants of this scale typically employ secondary biological treatment to meet effluent quality standards. The designed capacity is listed as 1.00, though the unit is unspecified, indicating the plant's scale relative to its service population. The plant discharges treated wastewater into local watercourses that ultimately drain into the Mediterranean Sea. The surrounding area is characterized by hilly terrain and agricultural land, with the plant playing a key role in protecting local water quality and downstream ecosystems. Its inland location reduces direct marine impact, but proper treatment remains essential for safeguarding the region's water resources.

The plant discharges into local streams that flow into the Imera Settentrionale river basin, eventually reaching the Tyrrhenian Sea. The watershed supports diverse aquatic life and is important for regional agriculture. The inland location minimizes direct marine nutrient loading, but the plant's effluent quality is critical for maintaining the ecological health of the receiving water bodies.