What is the primary function of a soil absorption system?

The primary function of a soil absorption system is to disperse treated effluent into the soil. This system plays a crucial role in the overall functioning of a septic system. After wastewater passes through the septic tank, where solids settle and are broken down by anaerobic bacteria, the remaining liquid effluent is delivered to the soil absorption field.

In this process, the effluent is absorbed into the soil, where beneficial microorganisms further treat it as it percolates through the soil layers. This natural filtration helps ensure that pathogens and contaminants are removed before the effluent eventually re-enters the groundwater system. Therefore, the soil absorption system is vital for ensuring that treated wastewater is safely and effectively managed, preventing pollution and protecting the environment.

The other options, while related to wastewater management, do not represent the main purpose of a soil absorption system. Filtering stormwater runoff, storing wastewater, and collecting sludge all involve different processes and systems that function separately from the soil absorption's primary role in dispersing treated effluent.