Georgia Residential Contractor Practice Exam

What is the minimum setback distance for septic tanks from surface drainage ditches?

1. 10 feet

2. 15 feet

3. 5 feet

4. 25 feet

The correct answer is: 15 feet

The minimum setback distance for septic tanks from surface drainage ditches is 15 feet. This requirement is established to ensure that septic systems are adequately distanced from potential sources of surface water contamination, which is critical for protecting public health and maintaining environmental standards. By maintaining this distance, it reduces the risk of sewage effluent entering drainage ditches, thereby preventing pollution of nearby water bodies and ensuring that the septic system operates effectively without interference from surface water flow. The choice of 15 feet balances the need for safety and environmental protection, taking into consideration the potential flow of surface waters, the absorption capabilities of the soil, and the function of the septic system. Such regulations are often stipulated in health codes and by local ordinances to promote sustainable practices in construction and land use.