How does a mound system differ from a conventional septic system?

A mound system is specifically designed to handle particular site conditions where traditional septic systems may not be feasible. This type of system is employed in situations where the soil conditions are not adequate for a conventional drain field, such as when the native soil is too shallow, too wet, or has poor percolation rates.

In a mound system, a raised bed is constructed above the natural ground level, creating an elevated drain field. This allows the septic system to function effectively by providing a suitable environment for wastewater treatment in cases where the natural soil cannot adequately absorb and filter effluent. The mound is typically constructed using clean sand or another appropriate material to facilitate drainage and promote the treatment of the effluent before it percolates into the surrounding soil.

The other options do not accurately capture the primary distinguishing characteristic of a mound system compared to a conventional septic system. A mound system does not inherently require a larger tank size, nor does it necessarily reduce the required land area. Additionally, while different types of pipes may be utilized, this is not a defining factor of mound systems versus conventional ones—it is more about the design and placement of the system itself due to specific site conditions.