How to Tell if a Drainage Pipe Has Collapsed

A collapsed drainage pipe is a structural failure, not a blockage, and cleaning it will not fix it. The signs are usually a pattern of recurring problems rather than a single dramatic event.

Signs of a collapsed pipe

• A drain that blocks repeatedly in the same spot, even after cleaning
• Slow drainage that does not improve with snaking or jetting
• A wet patch or depression in the yard above the line
• A gurgling sound from the drain, indicating air trapped by a partial collapse
• A sudden backup affecting multiple fixtures at once

Why a camera is the only confirmation

The symptoms of a collapse can look like a severe blockage. The difference matters because a collapse needs excavation and replacement, while a blockage may just need cleaning. A camera inspection shows the pipe wall directly — a collapse is unmistakable on the feed, and the locator tells us exactly where to dig.

See our drain pipe repair and drain pipe replacement pages for what comes next.