Discharging sanitary sewage to the surface of the ground is considered unsafe.

• A. True
• B. False
• C. Cannot be determined
• D. Only in certain conditions

Answer: (A)

Directly releasing sanitary sewage onto the ground bypasses the treatment the system is designed to provide, so it creates immediate health and environmental risks. Sewage contains pathogens—bacteria, viruses, and parasites—that can cause illness if people, pets, or wildlife contact it. When waste sits or runs on the surface, it’s highly accessible for contact, for flies or other insects to breed, and for odors to become a problem. In addition, surface discharge can easily wash into nearby surface water or migrate down to groundwater, especially after rain or on permeable soils, contaminating water supplies and harming the environment. On-site systems are designed to treat and disperse effluent underground through a drainfield or approved subsurface method, allowing natural processes in soil to reduce pathogens and pollutants. Because surface discharges defeat these protections, they’re considered unsafe under standard practices and codes.