Which of the following best describes indicators of good soil absorption?

Good soil absorption is characterized by effective drainage capabilities and the absence of surface saturation, which allows for proper treatment and dispersal of wastewater. When percolation rates are rapid, it indicates that water is moving through the soil efficiently. This rapid movement prevents the accumulation of standing water on the surface, which could lead to over-saturation and the potential for system failure or environmental contamination.

The ideal soil for septic systems should enable water to absorb quickly and evenly, ensuring that wastewater is adequately treated before it reaches the groundwater. Therefore, the presence of no visible standing water coupled with rapid percolation rates serves as a strong indicator of healthy soil absorption conditions, making it the best choice in this context.

Other options present scenarios that would not promote effective soil absorption, such as slow drainage and wet spots, which suggest poor soil capabilities; high clay content, which can hinder drainage; and frequent repairs to the septic system, indicating ongoing issues with absorption and performance.