The distribution box is one of the single most important components of a septic system since it directly affects the system’s S.A.S. or leaching area. The job of a distribution box is to equally divide the liquids exiting the tank throughout the entire S.A.S.. If the component is functioning properly it will prevent liquids from overloading one side of the leaching area thus causing it to fail prematurely.
Distribution box repairs or replacements are a common service. This is because they are made of thinner pre-cast concrete than that of tanks. The hostile environment within a septic system made up of hazardous gases and constant moisture can certainly aid the decay and overall break down of the distribution box’s structure.
Educational video: Decayed Distribution Box
If the distribution box is not water tight or leaking, it can allow a percentage of the effluent to escape into the surrounding soils or groundwater before reaching the secondary treatment stage, therefore becoming a potential threat to the environment and public safety.