The project concerns the construction of sewerage networks of the settlement of Gournes and the completion of the sewerage and sewage treatment system (EEL) in Kato Gouves, Municipality of Hersonissos. More specifically, the construction of 30,900 m of sewerage networks in the Gourna settlement, of which 6,459 m are depressive pipelines, and the construction of 2 pump stations. The sewage will be led to the construction of EEL Gouves. The completion of the sewerage system in Kato Gouves, the construction of 1 pumping station and the gravitational pipeline for the sewage of the settlement of the Ano Gouves settlement to the EEL.The construction of the EEL in Gouves, with a capacity of 9000 inhabitants, as well as the drainage pipeline to the main recipient. Services of the Technical Advisor for the Sewerage of Polluted Settlement of Gournes. Connections with networks of Public Service Organisations (NCOs) for pumping stations and the ESA.