Georgia Septic Installer Practice Test

What configuration results from improper installation of absorption lines on sloped topography?

1. Overflow and insufficient absorption capacity

2. Under-absorption and flooding

3. Over-concentration of effluent in one trench

4. Inadequate depth of trenches

The correct answer is: Over-concentration of effluent in one trench

The correct answer focuses on the idea that when absorption lines are improperly installed on sloped topography, there is a tendency for effluent to accumulate disproportionately in one area, particularly lower sections of the slope. This results in over-concentration of effluent in one trench. In sloped areas, wastewater is more likely to follow the path of least resistance, which can lead to effluent pooling in the lower absorption lines rather than spreading evenly across all trenches. This concentration can overwhelm the soil's natural ability to treat effluent, potentially leading to saturation, surface seepage, or environmental contamination. The other choices describe issues that might occur due to various reasons, such as insufficient absorption or overflow, but they do not specifically address the effect of improper installation on sloped terrain. Properly installed absorption lines should distribute effluent evenly; however, poor installation can disrupt this balance, leading to localized saturation.