What advantage do pressure distribution systems provide for drainfield application?

Pressure distribution systems offer the significant advantage of providing a more uniform application of wastewater across the drainfield. By using a pump to distribute effluent evenly through multiple small-diameter pipes, these systems ensure that wastewater is applied consistently over a larger area. This uniformity helps to prevent over-saturation in any particular section of the drainfield, which can lead to backup and system failure. Additionally, even distribution aids in the effective absorption and treatment of wastewater, enhancing the overall performance and longevity of the septic system.

While other options may suggest benefits associated with cost or maintenance, they do not capture the principal advantage of pressure distribution systems, which lies in their ability to evenly distribute effluent, ultimately promoting better treatment and reducing the risk of system malfunction.