What is the main purpose of a septic tank filter?

The main purpose of a septic tank filter is to prevent solids from entering the drain field. This function is vital because if solids pass through the tank and into the drain field, it can lead to blockages and system malfunctions, which ultimately jeopardize the effectiveness of the entire septic system. The filter acts as a barrier that retains larger particles while allowing liquid effluent to flow out into the drain field for further treatment and absorption into the soil.

By keeping the solids contained within the tank, the filter helps maintain the integrity of the septic system, prolongs its lifespan, and reduces the risk of environmental contamination. Proper filtration leads to a more efficient drainage system and minimizes the need for costly repairs or premature replacement of the leach field.