What is the primary function of a relief line in septic systems?

The primary function of a relief line in septic systems is to convey septic tank effluent to a lower elevation trench. This is crucial in ensuring that the wastewater is directed to the appropriate area for further treatment and absorption into the soil. By transporting effluent to a trench situated at a lower elevation, the system can utilize gravity to assist in the movement of wastewater, promoting efficient drainage and reducing the risk of backflow into the septic tank.

In the context of septic system operation, it is essential for the effluent to be properly managed. The relief line helps maintain the balance within the system by directing the effluent to designated areas where soil can effectively process and filter the wastewater. This function is vital for preventing potential environmental contamination and ensuring that the system operates efficiently over time.