A drainfield is a crucial component of a septic system, designed to treat and disperse wastewater from a home. It consists of a series of trenches filled with gravel or sand, where effluent from the septic tank is released. The soil in the drainfield naturally filters and breaks down harmful bacteria and nutrients, allowing treated water to safely return to the groundwater. Proper maintenance of a drainfield is essential for its effectiveness. Homeowners should avoid overloading the system with excessive water and refrain from planting deep-rooted plants nearby, as these can damage the system. Regular inspections can help ensure the drainfield operates efficiently and prevents costly repairs.