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Sewer Line Bellying Got You Down? We Have the Solution!
By webdev
Jun 4, 2025

There is a lesser-known but serious pipe issue called a sewer line belly. Left untreated, this collapsed part of the pipe leads to serious blockages, backups, pipe deterioration, and foundation problems. Thankfully, there are innovative solutions in trenchless sewer repair in Redwood City, CA, and traditional excavation.
How To Fix Sewer Pipe Belly Issues
A sewer pipe belly occurs when a section of the pipe sags or dips. It causes waste and water to collect rather than flow properly. If you’re experiencing recurring drainage problems, sewer odors, or backups, your system may be suffering from it. Often, the cause of pipe bellying involves poor installation and slope, or soil movement.
One option to correct sagging pipes is trenchless pipe repair. But this is for minor bellies where pipe integrity is still relatively intact. Technicians restore the pipe without excavating your yard.
For more advanced cases where the sag has damaged the pipe beyond repair, trenchless pipe replacement is the preferred route. If the belly part has sustained severe damage, pipe bursting can break up the pipe while pulling a new one in place. It prevents the need for digging trenches while providing a stable and long-lasting solution.
However, trenchless sewer replacement isn’t always applicable. The pipe belly often involves other factors that prevent trenchless procedures from working.
In many cases, the best solution is excavation, or a combination of excavation and trenchless methods. This thorough approach guarantees a more suitable repair that solves the issue. It also allows correction of the pipe to prevent a recurring belly.
Can You Prevent A Sewer Belly?
Preventative maintenance with inspection goes a long way in avoiding sewer line bellying. For properties at risk of soil movement or improper slope, reinforcing the pipe system using trenchless pipe lining adds strength and prevents bellying.
In some cases, plumbing technicians may require excavation to correct the problem of proper slope and soil movement issues. This prevents recurring pipe belly issues. Excavation provides an opportunity to reposition and fix placement issues.
Call Bell Plumbing today to get a sewer belly issue assessed first. We will provide the most effective repair method that prevents it from happening again.