The object of the project is the construction of wastewater drainage networks and sewage treatment plant (EEL) in T.K. Damasiou Municipality of Tyrnavos, where there are no infrastructures for the management of waste water and the management is done through private sewage. In recent times, soil saturation with liquid waste has occurred, resulting in the overflow of absorbing sewage systems and the surface drainage of unprocessed sewage inside the settlement. The work will be done with the aim of protecting public health and improving the quality of life of the inhabitants of the TK and the management of the water resources of the area.