How much absorptive area does a leaching chamber system require compared to a standard system in new construction?

The correct answer reflects the efficiency of leaching chamber systems compared to traditional septic systems. Leaching chambers are designed to maximize the effective use of space for wastewater treatment. They create a larger surface area for absorption without the need for the same amount of conventional aggregate material, such as gravel.

This efficiency is achieved because leaching chambers can be installed in a way that provides ample air flow and interaction with the soil, leading to better treatment of effluent. In new construction, this design allows for a reduced absorptive area requirement compared to standard systems — in this case, requiring 25% less area.

The other answer choices do not accurately represent the efficiencies introduced by leaching chamber technology in soil absorption. The reduction in area is a key advantage of utilizing these systems, promoting better land use and potentially reducing construction costs associated with larger conventional systems.