Signs You Might Have Tree Roots In Your Sewer Line

Tree roots are drawn to the moisture and nutrients inside a sewer line, and they can find their way in through a joint gap measured in millimeters. Once a root gets a foothold, it keeps growing — and it doesn't take much to start catching everything else moving through the pipe.

Early signs

Gurgling drains, especially the lowest fixture in the house (often a basement floor drain or laundry tub), slow drainage that comes and goes, and recurring clogs in the same spot are all common early indicators.

Why it happens even with healthy pipes

Root intrusion isn't only an old-pipe problem. Any joint, even in newer pipe, is a potential entry point if a thirsty tree is close enough and conditions are right. Drought years can make it worse — roots chase water more aggressively when the surrounding soil is dry.

What confirms it

Cleaning a line that has become root-clogged sometimes fixes the immediate symptom without answering the underlying question. A camera inspection is the only way to actually see root intrusion versus another cause, and to gauge how established it is.

It's usually a recurring maintenance item, not a one-time fix

If the tree causing the problem isn't going anywhere, expect the roots to come back over time. That's normal — it doesn't mean an earlier clearing failed. Regular maintenance on a known root-prone line is a common, reasonable approach.