It concerns the second phase of a segmented operation, the overall scope of which includes the construction of wastewater collection and treatment projects for the agglomerations of N Mylotopos Pal Mylotopos and Axos of the Municipality of Pella More specifically, the operation includes a Gravity Pipeline for the transport of wastewater from N Mylotopos end of an existing network of N Mylotopos to AEL length 33 km Gravity Internal Sewerage Network of Pal Mylotopos total length 62 km and a transmission network to the wastewater transport pipeline of N Mylotopos which includes a pumping station and a depressive pipeline of length 08 km Completion of the Gravity Internal Sewerage Network of Axos total length 02 km and a transmission network to the wastewater transport pipeline of N Mylotopos which includes two pumping stations and a depressive pipeline of 29 km of AEL capacity 5800 km. works and excavations carried out by direct labor by the ISEE Ephorate of Prehistoric and Classical Antiquities Ephorate of Antiquities of Pella Also included is the construction of private connections with the Municipality's own resources in order for the entire project to be operational from the outset