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The place for the toilet must be chosen in such a way as not to pollute the surrounding soil and the reservoir. Therefore, according to sanitary rules, it should be no closer than 20 m from the well, and above it. From the boundary of the site, the toilet should be defended by 1 m. and have convenient access for assignization. When building it is advisable to take into account the wind rose in order to avoid a specific “amber” place.