This work includes 3 discrete Subprojects, the object of which is as follows:- Subproject 1: Implementation of 32.16 % of the Wastewater Treatment Plant, completion of earthworks, building infrastructure, depressive pipeline and pumping stations, environmental planning work, testing operation of the ESA etc. – Subproject 2: Provision of technical advisory services to monitor the physical and economic object of the construction, the pilot operation and the management closure of the project. Subproject 3: Power supply of pump stations by PPC and the Municipality of Kalavrita.