Georgia Septic Installer Practice Test

What should be used when a septic tank cover is more than 12 inches below grade?

1. Concrete slab

2. Septic tank riser

3. Access door

4. Septic tank lid

The correct answer is: Septic tank riser

When a septic tank cover is more than 12 inches below grade, a septic tank riser is the appropriate solution. A riser is a vertical extension that connects the septic tank access opening to the ground surface, ensuring that the cover of the tank is accessible for maintenance and inspections without the need for extensive digging. Using a riser enhances safety and convenience for technicians who service the septic system, enabling them to reach the tank easily and perform necessary tasks such as pumping and inspections. It also helps in maintaining proper functioning of the septic system by ensuring that any maintenance can be done without significant disruption to the surrounding area. Other options may not provide the necessary access or may not comply with installation standards. For example, a concrete slab or an access door may not be designed for such applications, and a standard septic tank lid might not suffice when dealing with deeper installations. Overall, the riser is specifically designed for this purpose and fits regulatory guidelines for septic system installations.