Which of the following best describes a subsurface sewage disposal system?

A subsurface sewage disposal system is specifically designed to treat and manage wastewater below the surface of the ground. This type of system typically involves the use of a septic tank and a drain field, where sewage is processed through a series of natural biological and chemical processes within the soil. As the waste water percolates through the soil layers, harmful pathogens and contaminants are filtered out, allowing for the safe return of treated water to the groundwater supply.

This underground approach is beneficial as it minimizes surface impacts, reduces odors, and helps protect the environment by preventing direct discharge of untreated waste into open water bodies or onto the land surface. By treating waste below ground, these systems also reduce the risk of exposure to the waste, enhancing public health and safety.