Georgia Septic Installer Practice Test

What is the minimum vertical distance required from seasonal groundwater to the bottom of the absorption field trench?

1. 12 inches

2. 18 inches

3. 24 inches

4. 30 inches

The correct answer is: 24 inches

The minimum vertical distance required from seasonal groundwater to the bottom of the absorption field trench is 24 inches. This standard ensures that there is adequate separation between the groundwater and the effluent from the septic system, which is vital for maintaining the effectiveness of the system and protecting water quality. This distance allows for adequate treatment of wastewater as it percolates through the soil, facilitating the removal of harmful pathogens and contaminants before the treated effluent reaches the groundwater. By maintaining this separation, potential issues such as the contamination of drinking water supplies and the overall failure of the absorption system are mitigated, ultimately contributing to environmental safety and public health. Setting this distance ensures that the soil can adequately filter and treat the effluent before it mingles with the groundwater, which is especially important in areas prone to high groundwater levels.