The project concerns the drainage and treatment of urban wastewater of the settlement of Agiasos Municipal Unit of Agiasos, Municipality of Lesvos. The settlement of Agiasos is included in the priority settlements of EU Directive 91/271.In particular, the project concerns the completion of the separate sewerage networks of the settlement of Agiasos in areas that exist old panorheic sewerage networks and the transport of wastewater from the entire settlement until the Wastewater Treatment and Disposal Facility.