What function does the distribution box serve in a septic system?

The distribution box in a septic system plays a crucial role in ensuring that the effluent is evenly distributed across the drain field or leach field. After wastewater has gone through the septic tank, where solids settle and some degree of treatment occurs, the effluent that flows out is directed into the distribution box. This box has several outlet pipes that lead into different sections of the drain field.

The equal distribution of effluent is vital because it prevents overloading any single section of the drain field, which could lead to failure in that area. If one section receives too much effluent, it can become saturated, leading to untreated sewage surfacing or contaminating groundwater. By promoting a balanced distribution, the system ensures that the effluent can adequately percolate through the soil for further natural treatment and absorption.

Other functions listed, such as filtering solid waste or measuring tank levels, are not roles of the distribution box. Solid waste is managed within the septic tank, while level measurement is typically handled by separate devices or systems, not by the distribution box itself. The box’s primary function remains focused on the effective and equal distribution of treated effluent to maintain the septic system’s efficiency and longevity.