What is an effluent filter designed to do in a septic system?

An effluent filter in a septic system is specifically designed to prevent the passage of large suspended matter from the septic tank into the drain field. Its primary function is to act as a barrier that filters out solids and debris that could clog the system, ensuring that only clear effluent flows into the leach field for further treatment. This is crucial in maintaining the efficiency and longevity of the septic system, as large particles can lead to blockages, reducing the effectiveness of the drain field and potentially causing backups or system failures.

In contrast, other functions such as allowing large solids to pass through or storing extra sewage are not part of the effluent filter's purpose. Additionally, an effluent filter does not increase the flow rate of effluent; rather, it regulates what gets passed to the next stage of treatment to promote optimal performance of the septic system.