Home Inspector Bloomington MN
Plumbing defect

Orangeburg Sewer Pipe

Bituminized fiber sewer pipe (1940s–70s) that softens, deforms and collapses.

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HomeDefect LibraryOrangeburg Sewer Pipe
What it is: Bituminized fiber sewer pipe (1940s–70s) that softens, deforms and collapses.

Why it matters

An Orangeburg lateral can flatten and fail, causing backups and costly excavation.

Orangeburg Sewer Pipe during a Bloomington MN home inspection

Why it's common in Bloomington

Possible on Bloomington and inner-suburb laterals of the mid-century era.

Signs to watch for

  • repeated sewer backups
  • root intrusion
  • an oval-deformed line on camera

What we check during the inspection

A sewer scope is the only reliable way to confirm Orangeburg and its condition.

How it's typically corrected

Replacement or trenchless lining of the lateral.

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