What must be installed in a gravity sewer pipe from the sand filter to the drainfield?

An inspection port is essential in a gravity sewer pipe from the sand filter to the drainfield because it allows for regular monitoring and maintenance of the system. Inspection ports provide access points for evaluating the condition of the pipe, checking for blockages, and ensuring that the system is operating correctly. This access is crucial for maintaining the efficiency and longevity of the septic system, as it allows for quick identification and resolution of any potential issues, such as clogs or excessive sediment buildup.

Regular inspections can significantly reduce the risk of system failure, ultimately protecting the environment and public health. The installation of an inspection port is a standard practice and is often mandated by local health codes to ensure the proper functioning of septic systems.