What is required for a septic tank with 15 inches of cover?

For a septic tank that has 15 inches of cover, having an access port with a riser is necessary for proper maintenance and inspection. The riser extends from the septic tank to the ground surface, making it easier for service personnel to access the tank without having to dig down through the soil and cover.

Septic systems require regular maintenance, including inspections and pumping, to function effectively and prevent failures. By having an access port with a riser, you facilitate the inspection of the tank’s condition and the level of sludge and scum accumulation, allowing necessary actions to be taken without excessive difficulty.

This option meets regulatory standards for safety and functionality, ensuring that access to the septic tank is available when needed without compromising the system. In contrast, inspection holes without risers would not provide the same ease of access, and other options, like pressure release valves or secondary lids, do not fulfill the access requirement as directly or efficiently.