Tree Roots in Sewer Line? Belmont MA Homeowner Guide | Rhino Rooter
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How to Remove Tree Roots from Sewer Lines in Belmont, MA

  • David de la Roca
  • Oct 9
  • 4 min read

Updated: Nov 14

Close-up of large tree roots spreading across the ground, with moss and soil visible in a wooded outdoor area, illustrating how roots can grow outward in search of water.

When Roots Invade Your Pipes

If your drains are slowing down or gurgling, the problem might not be grease or buildup. It could be tree roots growing into your sewer line. In towns like Belmont, Watertown, and Cambridge, where mature trees line nearly every street, root intrusion is one of the most common causes of sewer backups.


When trees search for water, they find their way into small cracks in older pipes, especially clay or cast iron, and start growing inside. Over time, these roots can fill the line completely, blocking wastewater flow and even causing the pipe to collapse.

“People are always surprised when I show them what we pull out of a line,” says David de la Roca, owner of Rhino Rooter. “We’re talking roots as thick as your wrist, running all the way down the pipe. You’d never know it’s happening until the drain stops working.”


Why Roots Target Sewer Lines

Roots follow the path of least resistance, and that’s usually a small leak or gap in your sewer pipe. Once they find a moisture source, they grow inside and expand, trapping everything that flows by. Belmont’s older neighborhoods, with aging infrastructure and large shade trees, are especially prone to this issue.


Homeowners in Arlington, Lexington, Cambridge, and Newton often face similar problems in the spring and fall when root growth is most active. If you notice your toilet bubbling or water backing up in the shower after you flush, it could be the first sign of root intrusion.


DIY Root Removal vs. Professional Help

1. Chemical Root Killers (Short-Term Fix)

Foaming root killers sold in hardware stores can slow root growth temporarily. They work by drying out small root fibers inside the pipe. However, they don’t remove the roots completely and won’t fix cracks or breaks where new roots can grow back.


2. Drain Snakes and Root Cutters (Temporary Relief)

A mechanical auger can cut through small roots but doesn’t remove them fully. “It’s like giving them a haircut,” says David. “They grow right back if you don’t deal with the source.”


3. Hydro Jetting and Video Inspection (Long-Term Solution)

Professional hydro jetting uses high-pressure water to blast away roots and clear the line completely. After cleaning, a video inspection helps locate the entry points so repairs can be made.


At Rhino Rooter, David and his team often recommend pipe lining or section replacement for badly damaged lines. These repairs seal the interior of the pipe, block future root growth, and restore smooth flow.


How to Prevent Roots from Coming Back


Schedule Annual Drain Cleaning

In towns with heavy tree coverage like Belmont and Winchester, annual drain cleaning is one of the best defenses against root intrusion. “We see the same pattern every fall,” says David. “Roots keep growing into the same weak spots. A yearly cleaning keeps things flowing and helps you catch problems early.”


Repair Leaks Promptly

Even a small drip underground can attract roots. If you’ve had frequent clogs in the same area, it’s worth inspecting the pipe for cracks or misaligned joints.


Install a Root Barrier

If large trees are close to your sewer line, a plumber can install a physical or chemical barrier to keep roots away. It’s a simple, cost-effective prevention step, especially for older properties.


Know the Signs of Trouble

  • Frequent or recurring drain backups

  • Slow drains in multiple fixtures

  • Gurgling noises from toilets or sinks

  • Sewage smells in the yard or basement

If you notice more than one of these signs, it’s time to schedule an inspection.


Local Insight: Why Belmont Homes Are Prone to Root Problems

Belmont’s charm comes from its tree-lined streets and older homes, but those same trees and aging pipes create the perfect conditions for root intrusion. Many homes were built before PVC became standard, meaning older clay and cast-iron pipes are still in use.


“With the older systems around here, you’ve got joints every few feet,” David explains. “That’s dozens of opportunities for a root to sneak in. Once they’re in, they don’t stop growing.”


Seasonal conditions make the problem worse, and winter can create its own plumbing issues. Spring rain softens the soil, making it easier for roots to spread, while dry summers push trees to search deeper for water.


Fall cleanups often reveal the issue when homeowners notice slow drains after heavy leaf drop.


FAQ: Tree Roots and Sewer Line Care

1. How can I tell if tree roots are in my sewer line?

Look for slow drains, bubbling toilets, or sewage smells near your yard. A professional camera inspection confirms whether roots are the cause.


2. Can I fix root problems myself?

You can use chemical root killers for temporary relief, but they won’t stop regrowth. Only professional cleaning and repair prevent the problem from returning.


3. How often should I have my sewer line cleaned?

Once a year is ideal for Belmont homeowners, especially if you have older pipes or large trees near your property.


Final Thoughts

Tree roots in sewer lines can start as a small problem and grow into a major one. The key is early detection and prevention. If you’re in Belmont, Watertown, or Cambridge and notice slow drains or repeated clogs, it’s time to get your line checked before it backs up completely.


“Once roots take hold, they don’t stop until you deal with them,” says David. “Catching it early saves homeowners a lot of money and headaches.”


Call Rhino Rooter today at 617-360-1553 to schedule your sewer line inspection or drain cleaning.


Your trusted sewer and drain specialists are available 24/7 to keep your home running smoothly and your pipes clear.

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