The project concerns the construction of sewerage networks for the remaining parts of the settlements of Liti and Melissochori of the Municipality of Oraiokastro for the completion of the sewerage of the domestic wastewater of a small part of the settlement of Liti together with the construction of two small local pumping wells and the remaining part of the settlement of Melissochori with the construction of five small local pumping wells for the completion of the sewerage of all the two settlements only within the plan areas.