Which of the following best describes a pumped effluent drainfield?

A pumped effluent drainfield is characterized by the use of pumps to move treated wastewater from a treatment unit or holding tank to the drainfield, ensuring proper distribution of the effluent. This system is particularly beneficial in situations where the natural topography of the land does not allow for gravity flow to effectively transport the effluent to the drainfield. By employing pumps, it not only overcomes elevation challenges but also facilitates the distribution of effluent over a wider area, helping to promote even absorption into the soil and reduce the risk of localized saturation.

In contrast, systems that allow gravity flow only rely on the natural slope of the land for effluent movement, which can limit installation options. While pumped systems may require maintenance, the statement that they require constant maintenance is not accurate or a defining characteristic. Furthermore, the suitability of a pumped effluent drainfield is not restricted to any specific soil type, such as clay. It can be designed and installed in a variety of soil conditions, as long as proper engineering considerations are taken into account.