The project concerns the extension of the existing Wastewater Treatment Facility of the Municipal Sewerage Corporation (JHA) of Nafpaktia and the coverage of sewerage needs of the Municipal Unit Upper Country of Nafpaktia.Includes segmented projects, i.e. projects of which one or more sub-projects (in whole or in part) have been completed with funding from the Operational Programme “Environment” 2007-2013. The main sub-projects are:- Installation of wastewater treatment (organic cleansing) Upland.- Expansion of wastewater treatment facilities for Nafpaktos.