In this thesis a project of drainage of waste water and rainwater regulation for the part of settlement Vipava is presented. The method of planning a sewer system is described, which is the basis for the project and factors that have to be considered. On the basis of characteristics of settlement two solutions for the settled part of Vipava have been made and two solutions for the part of Vipava that's intended for the industrial zone. All of the solutions are drawn, processed and hydraulicly designed, with a help of a software Sewer+ and Microsoft Office Excel. The value of the investment has also been made. After an analysis of the results the better solution for the sewer system has been chosen.