Which of the following indicates that a drain field is saturated?

The presence of lush grass growth and standing water is a clear indicator that a drain field is saturated. When a drain field becomes saturated, it means that the soil is unable to absorb any more water, leading to pooling or standing water on the surface. This condition creates an environment where the grass thrives due to the excess moisture. The lush growth indicates that the grass is receiving plenty of water, far more than it would with normal drainage conditions.

This scenario reflects a significant problem in the functionality of the septic system, as the saturation implies that the effluent is not being adequately processed by the soil. In contrast, dry soil with no vegetation suggests that there is little to no water present, while only a slight increase in grass height may not indicate saturation but rather normal growth conditions. Additionally, pipe discharge visible above ground points to a failure within the septic system, but it doesn't specify saturation of the drain field itself.