The purpose of this paper is to present how to proceed when choosing the most appropriate variant of household sewage treatment plants that could be built in the villages of dispersed buildings. The scope of work includes the preparation of two variants of the concept of household sewage treatment plants, analyze and choose the most appropriate variant for use in the village Kawęczyn. The paper presents, for what conditions soil-water can be used of household sewage treatment plants under the new Regulation of the Minister of the Environment [2014]. The presented was an analysis of the data collected to design and selected usable in the village Kawęczyn variants of household sewage treatment plants. Design methodology was given for selected variants household sewage treatment plants. The presented was results of hydraulic calculations and chosen were household sewage treatment plants for the analyzed variants. The calculated was cost for designed variants of household sewage treatment plants. The performed an analysis of all the data and selected for the village Kawęczyn variant of household sewage treatment plants with bio filter.

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