Clay vs. Cast Iron vs. PVC: What Your Sewer Pipe Is Made Of (and Why It Matters)

Three houses on the same street can have three different pipe materials — and three different failure modes. Here's how to think about yours.

Vitrified clay tile (common 1900s–1970s)

Extremely durable material, terrible joints. Each 3-foot section connects with a mortar or rubber joint — and every joint is a future root entry and leak point. Lifespan 50–60 years; most Cerritos-area clay is at or past it. Typical fix: lining (seals every joint at once) or bursting.

Cast iron (common 1940s–1980s)

Strong and quiet, but corrodes from the inside out — scale buildup narrows the pipe while rust eats the walls. Fails with channel rot along the bottom. Typical fix: lining for moderate corrosion; replacement when walls are gone.

Orangeburg (1940s–1970s, the bad one)

Bituminized fiber pipe — essentially tar-soaked cardboard. It was cheap, it deforms under soil pressure, and it has no business still being in the ground. If a camera finds Orangeburg, plan replacement, not repair. It cannot be lined reliably.

PVC / ABS plastic (1980s–present)

The modern standard: smooth, joint-fused or gasketed, root-resistant, rated 100 years. Failures are usually installation defects — bad slope, poor bedding, or crushed sections — not material decay.

HDPE (trenchless replacement standard)

What we pull in during pipe bursting: heat-fused into one continuous, joint-free pipe. The gold standard for replacement — seamless, flexible, and root-proof.

How to find out what you have

A camera inspection identifies the material visually in minutes — and more importantly, shows its condition. Material tells you what to expect; the camera tells you what's actually happening. Call (833) 713-2101 to find out.