Which soil group includes silt, silt loam, sandy clay loam, clay loam, and silty clay loam?

Soil Group III includes textures such as silt, silt loam, sandy clay loam, clay loam, and silty clay loam because this group is characterized by a balance of sand, silt, and clay particles that provide moderate drainage and nutrient-holding capacity. The specific combinations of these textures found in Soil Group III allow for adequate water infiltration and retention, which affects how septic systems function in various soil conditions.

For example, soils with a higher silt content, like silt loam, are known for retaining moisture and nutrients, making them favorable for certain types of plants and also influencing the behavior of wastewater in a septic setup. This contrasts with the other groups, which are classified based on different combinations of soil textures that result in varying drainage capabilities and structural characteristics. Understanding soil classifications helps septic inspectors assess land suitability for systems and predict how efficiently they will operate.