What is the minimum distance of undisturbed earth required between the septic tank and the first trench?

The minimum distance of undisturbed earth required between the septic tank and the first trench is essential for proper functioning and to ensure the effectiveness of the sewage system. This distance helps prevent issues such as the contamination of the septic tank due to effluent from the trench or absorption fields, as well as minimization of soil disturbance that could affect the flow of wastewater and the performance of the system.

By maintaining a distance of 5 feet, local regulations ensure adequate separation to allow for proper drainage and soil treatment, facilitating a healthy ecosystem within the ground that treats sewage effectively. This buffer zone is critical for the stabilization of soil conditions, reducing the risk of failure in the sewage disposal system. The specification reflects best practices for the installation and maintenance of private sewage systems in Illinois. Adhering to this requirement is vital to protect public health and the environment, thereby illustrating the importance of following established guidelines in septic system design and installation.