How can soil type affect septic system function?

Soil type plays a crucial role in the effective functioning of a septic system, primarily because it influences how well wastewater can be absorbed and filtered. Heavy clay soils are particularly problematic for septic systems. These soils have very small particle sizes and tightly packed particles, which limit the movement of water and wastewater. This restricted drainage can lead to backups, system failures, and the potential for contamination of surrounding areas, as the effluent does not properly disperse and treat within the soil as intended.

In contrast, sandy soils allow for better drainage and filtration due to their larger particle size and better permeability, enabling water to flow through more freely. However, the presence of heavy clay can create significant challenges that undermine the overall effectiveness of a septic system. Therefore, understanding soil type is essential in septic system design and placement to ensure proper function and environmental safety.