What is the function of a distribution box in a septic system?

The function of a distribution box in a septic system is to evenly distribute effluent to multiple drain field lines. When the septic tank processes wastewater, the effluent that comes out is still liquid but contains dissolved materials and some suspended particles. The distribution box plays a crucial role by directing this effluent equally among the various drain field lines, ensuring that no single line is overloaded with wastewater while others remain unused.

An even distribution is vital for the efficiency of the drainage system; it helps prevent certain areas from becoming saturated and failing while others are underutilized. This equal spreading of effluent supports better treatment of the wastewater as it percolates through the soil, allowing natural biological processes to break down any remaining contaminants. By fulfilling this key function, the distribution box contributes significantly to the overall effectiveness and longevity of the septic system.