A failing distribution box usually presents as uneven drainage in your yard. Some areas of your drain field get too much water while others stay dry. Diagnose problems at the septic system drop box: procedures for troubleshooting leaks, smells, or backups & flooding in the septic system D-box. Septic system D box installation, specifications, inspection, diagnosis, and repair: in this article series about septic system drop boxes we describe the. A septic distribution box (D-box) is a concrete or plastic junction that evenly distributes wastewater from your septic tank to all drainfield lateral lines. Fixes range from jetting clogged outlets. When your distribution box shows leakage signs, you have your first clue which tells you that you drainage system beyond the D-Box is not functioning properly.
