What does 'soil injection' involve?

Soil injection specifically refers to the process of injecting domestic septage below the soil surface. This technique is often utilized in septic system applications where the waste is introduced underground to promote biodegradation by soil microorganisms. This method helps in effectively treating the septage while minimizing surface discharge and odors, making it an environmentally sustainable practice.

The injected material is typically broken down by the natural processes in the soil, allowing nutrients to be assimilated by plants while preventing surface contamination. This method is particularly important in maintaining the health and functionality of septic systems, as it allows for efficient waste management without polluting nearby water sources.

In contrast, adding fertilizers into soil relates more to agricultural practices aimed at enhancing plant growth rather than dealing with waste management. Draining excess water from soil and testing soil pH levels are also unrelated activities that do not pertain to the introduction of septage into the ground, thus confirming the unique relevance of the soil injection process in septic system management.