Orangeburg Pipe: What It Is, How to Identify It, and Replacement Options in Maryland
July 5, 2026 · 6 min read · By Deep Dive Plumbing Maryland
If your home was built between 1945 and 1972 and you have not had a sewer camera inspection, consider scheduling one. Orangeburg pipe failure is a when, not an if — and catching it before it collapses saves significant money.
Orangeburg pipe is one of the most common hidden problems in older Maryland homes. Made from compressed wood pulp and pitch, it was widely used for sewer lines in the post-WWII housing boom. Decades later, it is failing throughout Calvert and Anne Arundel County — and many homeowners do not know they have it until they have a sewer backup.
Signs of Orangeburg Pipe Failure
Frequently Asked Questions
What is Orangeburg pipe?
Orangeburg pipe (also called "fiber conduit" or "bituminous fiber pipe") is a type of sewer pipe made from layers of wood pulp and pitch pressed together. It was manufactured from the 1860s through the 1970s and was widely used for sewer lines during and after World War II when metal was scarce. It was named after Orangeburg, New York, where it was manufactured.
How do I know if I have Orangeburg pipe?
Orangeburg pipe is most common in homes built between 1945 and 1972. A sewer camera inspection is the definitive way to identify it. Signs of Orangeburg failure include: frequent sewer backups, slow drains throughout the house, and sewer camera footage showing a pipe that has deformed into an oval or collapsed shape. The pipe appears dark and fibrous in camera footage.
How long does Orangeburg pipe last?
Orangeburg pipe was designed to last 50 years, but most installations have far exceeded that lifespan and are now failing. The pipe absorbs moisture over time, softens, deforms from round to oval, and eventually collapses. Most Orangeburg pipe in Maryland is now 50–80 years old and at or past the end of its useful life.
How much does Orangeburg pipe replacement cost in Maryland?
Orangeburg pipe replacement in Maryland typically costs contact us for a free estimate+ depending on the length of the line, the depth, and the method used. Trenchless pipe bursting is often the most cost-effective method — it replaces the old pipe without full excavation. Traditional excavation is needed for severely collapsed sections or when trenchless methods are not feasible.
Can Orangeburg pipe be lined instead of replaced?
In some cases, yes — if the pipe has not yet collapsed and is still roughly round, a CIPP (cured-in-place pipe) liner can be installed inside the Orangeburg pipe, creating a new pipe within the old one. However, if the pipe has already deformed significantly or collapsed, lining is not possible and replacement is required. A camera inspection determines which approach is feasible.
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