When is it necessary to install a riser in OSSF?

In the context of On-Site Sewage Facilities (OSSF), the necessity to install a riser is primarily determined by the depth from the ground surface to the top of the tank. A riser is used to bring the access point closer to the surface to facilitate maintenance and monitoring of the system.

When the depth from the surface to the tank exceeds 12 inches, it becomes increasingly difficult to access the tank for inspections, pumping, and maintenance. Therefore, installing a riser in this situation is crucial for ensuring adequate access. This allows operators and service providers to perform necessary tasks without having to dig deeply, which is both labor-intensive and time-consuming.

By adhering to the guideline that a riser is necessary when the depth exceeds 12 inches, OSSF systems are maintained in a more efficient and practical manner. Regular maintenance is vital for the longevity and proper functioning of these systems, making the installation of a riser at this depth an important practice in the management of on-site sewage facilities.