Distribution boxes fail when they get clogged, tilt, crack, or get overwhelmed by excess water flow. Warning signs include slow drains, wet yard, sewage odors, and unequal distribution to the drain field lines. Fixes range from jetting clogged outlets. A clogged septic tank distribution box (also known as a D-box) is a serious issue that can affect the performance and safety of an entire septic system. Clogging If you've had your septic system for a while, you have probably run into clogs from time to time. You might have even experienced backups in the system.
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