Two Popular Uses of Distribution Boxes
A distribution box is a small box made of either plastic or concrete with multiple holes that can function as inlets or outlets. Plastic HDPE distribution boxes are the most popular choice because they are lightweight, easy to install, and less susceptible to ground conditions. They allow you to centralize multiple pipes into one place and decide how you would like to organize and distribute the liquid. Simply put, it’s a box that joins multiple lines into one container.
There are two popular uses for distribution boxes, for dispensing wastewater as a part of your septic system, and for centralizing drainage into a main outlet pipe in French drain systems. Below we’ll explore how both of these processes work, and the benefit of using a distribution box in your system.
Using Distribution Boxes in Your Septic System

Distribution boxes are used in septic systems by being placed between your septic tank and your leach field. Your septic tank has a single outlet sewer pipe that feeds into the distribution box. From there, the distribution box will usually have 3-5 outlets that feed each trench of your leach field. The goal is to evenly distribute your wastewater between all of your trenches to help maintain the health of your septic system. Evenly distributing wastewater reduces the risk of oversaturation of the soil in specific areas.
Distribution boxes are also helpful when it comes to septic system maintenance as they allow for an easy inspection point should you have any drainage issues. This can reduce the need for excavation and help you locate the specific areas of concern more easily.
Overall, distribution boxes are an affordable and easy to use addition to your septic system that can extend the lifespan of your system, while reducing ongoing maintenance challenges. You can check out a quick video guide for how they work here.
Using Distribution Boxes in Your French Drain System
Distribution boxes are used in a French drain system by centralizing all of your drainage intakes into one main pipe. Essentially the reverse layout of a septic system. Your French drains collect and move excess rainwater from different areas of your property into the distribution box. From there, a single outlet pipe moves all your water to the desired final location. In most systems, the single pipe leaving your distribution box is a solid pipe, which ensures all of the collected water is removed.
This is also helpful for French drain maintenance as it allows you to easily inspect or snake specific drainage lines from one central location. You can see which inlets are working as expected, and fix the one with an issue while reducing the amount of digging required.
Distribution boxes are especially helpful in complex French drain systems with a large number of lines. Connecting them all to one location helps your system stay organized and function at its best.
If you have any questions about using distribution boxes for your septic or French drain system, you can connect with us by phone or email to review your specific project.





