What is the purpose of a distribution or drop box in an onsite system?

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Multiple Choice

What is the purpose of a distribution or drop box in an onsite system?

A distribution or drop box exists to split and evenly send the liquid effluent from the septic tank into multiple drainfield trenches. In systems with more than one trench, it's important that each trench receives roughly the same amount of effluent so the soil treatment area works consistently across the field. The box helps maintain similar liquid levels and flow to each outlet, preventing one trench from being overloaded while others are underused. This promotes proper treatment, reduces soil saturation and trench failure, and keeps the drainfield functioning as designed. It’s not about filtering solids, storing effluent, or monitoring groundwater.

A distribution or drop box exists to split and evenly send the liquid effluent from the septic tank into multiple drainfield trenches. In systems with more than one trench, it's important that each trench receives roughly the same amount of effluent so the soil treatment area works consistently across the field. The box helps maintain similar liquid levels and flow to each outlet, preventing one trench from being overloaded while others are underused. This promotes proper treatment, reduces soil saturation and trench failure, and keeps the drainfield functioning as designed. It’s not about filtering solids, storing effluent, or monitoring groundwater.

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