Humber/Ontario Real Estate Course 3 Exam Practice

Given a rocky area and insufficient soil absorption, the most appropriate sewage system option is:

1. Installing a grey water system.

2. Installing a septic tank with a filter bed.

3. Installing a septic tank with a raised bed.

4. Using a conventional septic system.

5. Building a community sewage plant.

6. Utilizing composting toilets instead.

The correct answer is: Installing a septic tank with a raised bed.

In a situation where there is rocky terrain and insufficient soil absorption, installing a septic tank with a raised bed is the most appropriate option. This system is specifically designed to handle drainage issues associated with poor soil absorption. A raised bed system elevates the septic tank's drain field above the native soil level, allowing for better drainage in areas where groundwater or rock may impede proper filtration. This design increases the soil's ability to absorb the effluent by utilizing additional layers of soil and gravel, which can improve treatment through increased contact with naturally filtering materials. The other choices may not adequately address the limitations posed by rocky terrain and poor soil conditions. For example, using a conventional septic system typically requires good soil for leaching, which does not suit your circumstance. Similarly, while a septic tank with a filter bed might improve drainage slightly, it may not be sufficiently effective in addressing extreme absorption challenges due to rocks. Options like a community sewage plant or composting toilets may also be less practical in more remote or rural settings, making the raised bed system a more suitable solution.