From what distance should building foundations be set back from the edge of a drain field?

The appropriate setback distance for building foundations from the edge of a drain field is typically set at 5 feet. This regulation is established to ensure that the structural integrity of the building is maintained while also allowing for adequate space for the proper functioning and maintenance of the septic system.

Having this distance minimizes potential interference between the building's foundation and the septic drain field. It helps prevent issues such as the compaction of soil, which could impede the drainage of wastewater. Additionally, maintaining this distance allows for necessary access for maintenance procedures on the septic system without impacting the structure of the building.

In contrast, the other distances listed are generally considered excessive and not aligned with standard practices outlined in septic system regulations and guidelines. They would likely complicate site design and utilization without providing additional benefits for the safe operation of the septic system.