What does the term “mound system” refer to in OSSF?

The term “mound system” in On-Site Sewage Facilities (OSSF) refers to a specific type of wastewater treatment system designed and constructed above the natural ground level. This above-ground placement is intentional, primarily used in areas where the soil conditions, such as shallow depth to the water table or poor drainage, make conventional septic systems impractical or ineffective.

By raising the system above the natural ground level, the mound allows for better drainage, increases the infiltration area, and provides additional treatment as the effluent percolates through the soil. The mound consists of sand, soil, and other materials that enhance treatment processes while preventing untreated wastewater from contaminating nearby water sources. This design is beneficial, especially in regions with restrictive soil conditions, making the mound system a viable solution for managing wastewater effectively.

The other options describe characteristics unrelated to the nature and purpose of a mound system, making them inaccurate in the context of how these systems function within wastewater management.