Georgia Residential Contractor Practice Exam

On which end of the septic tank must an approved filter be installed?

1. Inlet end

2. Outlet end

3. Side end

4. Any end

The correct answer is: Outlet end

The correct answer indicates that an approved filter must be installed on the outlet end of the septic tank. This placement is crucial because the primary purpose of the filter is to prevent solids and other debris from escaping the tank and entering the drain field or leach field. By filtering the effluent as it exits the septic tank, the risk of clogging the absorption area is significantly reduced, leading to better system performance and longevity. In contrast, placing a filter at the inlet end would not serve the intended function, as it would not address the concerns of solids leaving the tank. Additionally, installing a filter on the side end or any end does not align with proper septic system design, where the outlet specifically is designated for filtering effluent to maintain the integrity of the treatment process and prevent blockages. Effective filtration at the outlet ensures clean wastewater is released for further processing and minimizes environmental impacts.