Which soil type is ideal for traditional septic systems but not suitable for mound systems?

Clay soils are characterized by their fine particles, which make them ideal in certain contexts yet unsuitable for traditional mound systems. In conventional septic systems, clay can be beneficial for maintaining moisture and acting as a barrier to water movement when properly managed. However, in a mound system, water needs to percolate through the soil effectively to ensure proper absorption and treatment.

Mound systems rely on properly drained soils that allow for adequate water movement, preventing pooling and ensuring effective treatment of wastewater. The dense texture of clay inhibits drainage and can lead to saturated conditions, making it difficult for nutrients and pathogens to be processed effectively. Thus, while clay may have certain advantages in specific traditional applications, it does not meet the permeability needs of mound systems, which is crucial for their intended function.