A distribution box is an underground concrete or plastic structure that disperses the septic wastewater into either a septic mound, a leach field, or a sand filter bed.
D-boxes are an essential part of most septic systems. If the box has issues, it will soon cause a leach field failure if not repaired. Common issues for them occur because they are worn down over time by weather or improper care of the septic system. Staying on top of routine maintenance and getting prompt repairs when needed is essential.