The soil level on a washing machine refers to the amount of dirt or soil on clothes. It is a setting that helps determine the appropriate wash time and amount of detergent needed for each load. Soil level settings can vary among washing machine models and brands, but they typically include options such as "Light," "Normal," and "Heavy". The Normal soil level setting is programmed to handle everyday garments with normal amounts of soil and is the most commonly used soil level. The soil level selection may change wash time, detergent dosage (bulk dispenser models only), wash motion, water temp, and/or water level to alter wash performance, depending on the model. It is important to choose the right soil level to ensure a more exact time for washing, save water and energy based on the soil level of clothing, and get optimal cleaning results.