What is a potential consequence of soil saturation in septic systems?

Soil saturation in septic systems occurs when the soil becomes overly saturated with water, impeding its ability to absorb additional liquids. One significant consequence of this saturation is system backups. When the soil cannot effectively absorb the effluent from the septic system, the liquid waste has nowhere to go and can flood back into the system, leading to backups in the plumbing fixtures of the property. This not only causes inconvenience but can also lead to more severe sanitary issues and costly repairs.

In contrast, other options suggest positive outcomes, such as improved drainage or enhanced filtration, which do not occur under conditions of soil saturation. Saturated soil typically performs poorly in these functions. Similarly, increased absorption would not take place in saturated conditions, as the soil's capacity to absorb further liquid is compromised. Hence, system backups are the most accurate consequence of soil saturation in septic systems.