Septic System Distribution Box

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Septic System Distribution Box

What is a septic system distribution box (D-Box) and what does it do? The distribution box basically takes the entire overflow (or as much as can be handled) from the system and distributes it evenly throughout your leachfield or drainfield. The box is roughly the size of large cinderblock, normally constructed of concrete and is water tight.

The D-Box allows for effluent coming from the septic tank to evenly distribute throughout two or more lateral or leech lines within your drainfield. This distribution ensures even feed so as to not unnecessarily over tax any one line at a time. While the D-Box generally remains functional throughout the life of the system, care should be taken not to allow heavy machinery or excavation work on or around the unit and surrounding area. The most susceptible part of the D-Box is usually the lid or cover which can sometimes collapse due to age, movement or pressure. The D-Box also serves as a central data point, helpful in determining whether or not proper flow is occurring and to rule out root or other obstructions.

NT-MAX Liquid can be added directly to the distribution box (by a professional) to speed up the bacterial application process. The main plan of attack when dealing with a clogged septic system or drainfield is to import the cultivated bacteria throughout the entire septic system to allow the digestion, by the bacteria, to begin and accelerate.