Abstract: A liquid distribution system for distributing effluent from a source of waste water. This liquid distribution system is contained within a distribution box and includes liquid inlet piping and a series of liquid flow splitting elements arranged in parallel, perpendicular to the horizontal flow of effluent through the distribution box. In addition, an adjustment system is incorporated into the liquid distribution system for maintaining the level of the liquid distribution system in the ground.

Abstract: A waste water drainfield for a sewerage disposal system of the type comprising a plurality of conventional absorption trenches includes a distribution device at each absorption trench for separating waste water into two components of preselected proportions; at least one distribution pipe for each distribution device for temporarily storing a quantity of waste water and/or for distributing the waste water to its respective absorption trench; and distribution lines connecting the distribution devices in series, each distribution device delivering one of the components to its distribution pipes for temporary storage and distribution to its respective absorption trench, and delivering the other of the components to the next distribution device via a distribution line.