The thesis presents the process of designing the discharge of waste water in the village of Rašica where there is no public sewerage system. In order to address the needs of both existing and new residential properties with issued project terms, a public sewerage of municipal waste water with a combined small biological treatment plant with discharge into an open watercourse is proposed. Considering the accessibility of the terrain and its altitude, a gravity sewer is the suggested as the most economical and easiest to maintain. The placement of pumping stations is proposed for areas below the altitude of the public sewerage system. For the purpose of providing a solution, the design of the sewerage system and the method of hydraulic calculation for the sewerage system network are presented in the thesis. The hydraulic calculations for individual pumping stations have been made in accordance with this method, along with a description of the implementation.