If a septic tank has a garbage disposal unit, how much should the size of the tank be increased?

When a septic tank has a garbage disposal unit, it is necessary to increase the size of the tank to accommodate the additional waste generated. The recommended increase in tank size is typically around 50 percent. This is due to the fact that garbage disposals introduce more solids into the septic system, which can reduce the effectiveness of the tank. The larger capacity allows for better decomposition and treatment of these additional solids, preventing potential system failures and ensuring that the septic system can handle both normal household wastewater and the extra waste from the disposal unit.

The increase in tank size is important for maintaining the system's efficiency and avoiding issues such as backup or clogging. By adhering to this guideline of increasing the capacity by 50 percent, homeowners can help ensure the long-term functionality of their septic systems.