What is the purpose of geotextile fabric in drainfield systems?

The purpose of geotextile fabric in drainfield systems is primarily to prevent clogging and soil erosion. This type of fabric acts as a barrier that allows water to pass through while filtering out fine particles from the soil, which helps maintain the functionality of the drainfield by preventing sediment from entering the system. By minimizing the accumulation of sediment, the geotextile fabric aids in the longevity and efficiency of the drainage system, ensuring that it operates effectively over time.

In addition, the fabric helps to stabilize the surrounding soil, thereby reducing the risk of erosion that could compromise the integrity of the drainfield. The proper use of geotextile fabric is crucial in ensuring that the treated effluent can be adequately absorbed into the soil and does not lead to surface issues or system failures.