Georgia Residential Contractor Practice Exam

How far must absorption lines be set back from streams or tributaries?

1. 5 feet

2. 10 feet

3. 25 feet

4. 50 feet

The correct answer is: 50 feet

The correct answer of 50 feet is based on environmental and regulatory considerations aimed at protecting water quality and maintaining the integrity of aquatic ecosystems. Setting back absorption lines or drain fields from streams and tributaries helps to prevent contaminants from leaching into the water system and minimizes the risk of nutrient overloads, which can lead to issues such as algal blooms and deterioration of water quality. The 50-foot distance is typically established by various state and federal regulations to create a buffer zone that allows for natural filtration and absorption of any potential pollutants. This distance ensures a safe margin that reduces the risk of groundwater contamination and helps in the preservation of local drinking water supplies, while also addressing compliance with health and safety standards. In contrast, shorter distances such as 5, 10, or 25 feet may not provide adequate protection from potential contamination, failing to account for the hydrological dynamics of the area and the potential for surface runoff to reach water bodies. Adopting the greater setback of 50 feet enhances environmental stewardship and promotes sustainable building practices.