What role does soil play in an OSSF?

Soil plays a crucial role in the operation of an On-Site Sewage Facility (OSSF) by helping to filter and treat effluent through natural biochemical and physical processes. As effluent from the septic system percolates through the soil layers, the soil acts as a natural filter that can trap pathogens, nutrients, and other contaminants. The soil's organic material supports microbial life that breaks down these impurities, converting harmful materials into less harmful substances. This natural treatment process is vital for minimizing environmental impact and protecting groundwater quality.

In contrast, while soil does provide certain benefits in terms of storage capacity and structure, these aspects are secondary to its primary function of effluent treatment. The installation phase is significant, but the ongoing interaction between the sewage system and the surrounding soil is critical for the long-term functionality and sustainability of an OSSF, thus making the role of soil pivotal in ongoing operations rather than just a one-time consideration during installation.