Menu

Call This Friday Get $50 Off Today

How Sewer Lines Break, Crack, or Collapse

How Sewer Lines Break, Crack, or Collapse

Sewer lines are predominantly buried underground, where they are seemingly safe from damage... but the truth is they…

Apr 24, 2026

Sewer lines are predominantly buried underground, where they are seemingly safe from damage... but the truth is they still break, crack, and collapse.

How Sewer Lines Break, Crack, or Collapse

Most homeowners never think about their sewer line until something goes horribly wrong. Then suddenly, sewage backs up into their house, the yard floods with wastewater, and they're facing thousands in emergency repairs.

Not you, though. You want to understand why sewer lines fail and how to address problems before disasters strike. This article is just for you.

If the damage is done and you’re looking for professional sewer repair, then consider the pros at Rooter Guard. Our live representatives and dedicated plumbers are on standby to help.

The Underground Isn't the Safe Haven You Think

Burying sewer lines underground protects them from weather, traffic, and surface damage, but underground conditions create their own serious threats that slowly destroy even the toughest pipes.

Think of it this way: your sewer line sits in constantly shifting soil, is exposed to tree roots searching for water, and handles corrosive waste every single day. Underground doesn't mean protected; it often means hidden damage you won't see until it's too late. Let’s look at those threats in detail.

Tree Roots Are the Biggest Enemy

Trees are beautiful, but their roots can be a nightmare for sewer lines. Roots naturally grow toward water and nutrients, and even the smallest crack in a sewer pipe can attract them. Once they find that opening, they push their way inside.

And they don’t stop there.

Roots continue to grow, fill the pipe, and block the flow of wastewater. Over time, they can cause serious damage – even breaking the pipe apart.

A skilled plumber can spot this issue early and recommend the right fix before it turns into a major problem.

Ground Movement Never Stops

Soil shifts constantly from seasonal moisture changes, temperature variations, and gradual settling. Plus, clay soil expands when wet and shrinks when dry. This expansion and contraction stresses sewer pipes buried in the ground.

Even gentle settling causes problems. Sewer lines need specific slope angles to drain properly using gravity. When ground settles unevenly, it creates low spots where waste collects instead of flowing.

Corrosion Eats Pipes From Inside and Outside

Old cast iron and clay sewer pipes corrode from both inside and outside simultaneously. Inside, acidic waste and chemicals eat away at pipe surfaces. Outside, moisture in soil chemically reacts with pipe materials.

Cast iron pipes develop rust that flakes away in layers while clay pipes absorb moisture and crumble apart. Modern PVC pipes resist corrosion much better, but they're not indestructible.

Age Catches Up With Everything

Sewer pipes have lifespans. Cast iron typically lasts 50-75 years, clay pipes manage 50-60 years under good conditions, and modern PVC shows an expected lifespan of 100+ years… but one thing is the same: they’re all due to break down eventually.

What You Put Down the Drain Matters

Not all sewer problems come from outside forces. Sometimes, the issue starts inside your home.

Grease, wipes, and debris can build up inside your pipes. This buildup restricts flow and creates pressure. Over time, that pressure can stress the pipe walls and lead to cracks or breaks.

It’s a slow process, but it adds up. This is why mindfulness, as well as hiring a plumber for periodic drain cleaning, is so important.

Waiting Makes Things Worse

It’s tempting to wait and see if the problem goes away, but sewer issues don’t fix themselves. These are not wounds that heal with time; in fact, they only get worse.

Plus, why postpone plumbing repair service when Rooter Guard is a call away with quick and affordable service?

Call or message Rooter Guard to speak with a live representative. We’re happy to address questions or concerns, schedule a convenient appointment, or arrange urgent sewer repair today.

Our Services

Plumbing Services

Faucets & Kitchen Sink

A kitchen stays busy all day. When something slows down the flow of…

Camera Inspection

A good look inside a drain line tells you the truth faster than…

Sewer Repair

A sewer line problem interrupts daily life quickly. Rooter Guard sees this…

Repiping

A plumbing system reaches a point where repairs stop making sense. Many homeowners…

Garbage Disposal Replacement

A dead disposal can bring a busy kitchen to a stop. When that…

Call U Now 818-351-1810

Recent Blog & Blog Post

Blog Apr 24, 2026

How Sewer Lines Break, Crack, or Collapse

Sewer lines are predominantly buried underground, where they are seemingly safe from damage... but the truth is they still break, crack, and collapse. Most homeowners never think about their sewer line until something goes horribly wrong. Then suddenly, sewage backs up into their house, the yard floods with wastewater, and…

Learn More