What is the purpose of using filter fabric in an infiltration trench?

The purpose of using filter fabric in an infiltration trench is primarily to filter out debris and pollutants. This material plays a crucial role in maintaining the quality of the water that infiltrates through the trench by acting as a barrier that allows water to pass while trapping sediments, litter, and other contaminants. This filtering process is essential because it helps to prevent these particles from clogging the infiltration systems and ensures that the water that enters the groundwater or other systems is cleaner and less polluted.

By employing filter fabric, practitioners can enhance the overall efficiency and longevity of the infiltration trench, which is designed to manage stormwater runoff. The clean water that exits the system is better for the surrounding environment and supports sustainable water management practices.

While there may be other aspects that filter fabric contributes to, such as indirect benefits for erosion control through stabilizing the soil around the trench, its primary role remains focused on filtration of incoming water, making it essential for effective functionality.