The study provides the results of research on the uniformity of sewage flow from drain pipes of a soil infiltration system. The research compared two types of pipes with holes drilled in the bottom: type I - with holes spaced at 0.50 m, type II - with holes spaced at 0.25 m, and used six levels of hydraulic loads from 24 to 120 dm3. Laboratory experiments were carried out in a ground bed from medium sand, using water in place of sewage. The flow from the drain pipe type I, with a larger spacing of holes, was found to be more uniform than that from the drain pipe type II. For both types, the uniformity of flow decreased with the increasing load of pipes.

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