Georgia Septic Installer Practice Test

After how many linear feet of absorption lines are dosing tanks required?

1. 250 ft

2. 500 ft

3. 750 ft

4. 1000 ft

The correct answer is: 500 ft

Dosing tanks are required after 500 linear feet of absorption lines because, at this distance, gravity flow becomes less effective for ensuring proper drainage and distribution of effluent in a septic system. When the absorption lines extend beyond this length, the risk of uneven distribution increases, which can lead to areas of over-saturation or under-saturation in the soil. The use of a dosing tank helps to optimize the performance of the system by reliably delivering effluent to the absorption field at appropriate intervals and volumes. This mechanism ensures that the soil can effectively treat the effluent, thus maintaining the overall functionality and efficiency of the septic system.