What should be the maximum depth for burying a sanitary sewer line?

When determining the maximum depth for burying a sanitary sewer line, it is essential to consider several factors, including frost lines, soil conditions, and local building codes. Generally, the maximum depth for burying a sanitary sewer line is often cited as being around 5 feet. This depth helps to ensure that the sewer line is below any potential frost line, which varies by region, to prevent freezing and subsequent blockages during cold weather.

Burying the line at this depth also helps protect it from surface disturbances, such as construction activities or landscaping, which could potentially damage the line. It's important to consult local plumbing codes and regulations, as they can dictate specific requirements based on geographic and environmental conditions. Appropriate installation practice is crucial for maintaining the integrity and functionality of the sewage system over time.