The project concerns the integrated wastewater management system in the geographical area of the Municipalities of RafinaPikermi and SpataArtemida and will provide a definitive solution to the wastewater drainage problem of the area for several decades.The KEL Wastewater Treatment Center with a capacity of 135000 inhabitants in its initial phase forecast 2030 and up to 225000 in the final phase 2060 will operate with state-of-the-art technology that will allow the use of the effluent for unlimited irrigation and urban-urban use.