What area should not have any connections made?

The over dig around the tank should not have any connections made because it is the area surrounding the septic tank that is primarily intended for excavation purposes during installation or maintenance. This space can be essential for ensuring proper installation, allowing access, and preventing any damage to the tank itself. Making connections in this area could lead to complications such as improper flow, leaks, or even structural issues with the tank.

The distribution box, leach field, and septic tank are integral parts of the septic system where connections are necessary to facilitate the movement of wastewater. The distribution box directs effluent evenly to the leach field, while the leach field disperses wastewater into the soil for further treatment. The septic tank is where the wastewater is collected and initially broken down. Therefore, these areas are critical for the system's functioning and should have the appropriate connections to enable proper operation and maintenance.