How deep should a septic tank typically be buried?

The typical burial depth for a septic tank of 18 to 30 inches is guided by factors such as local regulations, frost lines, and the overall design of the septic system. This depth ensures that the tank is sufficiently below ground to minimize the risk of frost damage in colder climates while also allowing for proper access for maintenance and inspections. Additionally, this depth helps to protect the tank from surface disturbances, which could potentially lead to ground movement and compromise its structural integrity.

Choosing this range helps maintain the septic system's efficiency, as it allows for adequate treatment of the wastewater before it moves to the drain field. Proper burial depth is crucial to the system's functionality and longevity, which underscores the importance of adhering to these guidelines in installation practices.