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Orangeburg, and How to Tell If You Have It

In short

Build era is the first test: bituminized fiber went into the ground from 1948 and stayed code-legal into the late 1970s, so a house from that span cannot rule it out by date alone. Only a camera survey settles it, by showing whether the pipe still has a round section.

TrenchPoint is a referral service, not a contractor. We connect homeowners with independent contractors. Contractors are required to hold whatever credential their state or municipality demands. Every state page sets out who licenses plumbers there and where to check, so you can confirm before work begins. We do not perform excavation or repair, we do not set prices, and we never charge homeowners anything — the contractors in our network pay us when we route them a call.

Orangeburg is the one lateral material where the usual advice actively misleads, because the usual advice is to check the build year.

The dates do not rule it out

PHCP Pros cites an AP report giving 1940 to 1970 for its use connecting homes to public sewers. The City of San Luis Obispo says it was commonly used from 1948 into the 1970s. And PHCP Pros quotes the City of Tempe, whose records indicate the Uniform Plumbing Code allowed bituminous fiber sewer pipe between 1955 and 1982.

Those windows do not agree, and that is the point. A house built in 1974 is not too new for Orangeburg, and one built in 1946 is not too old. The material has to be identified, not inferred.

How to tell

On camera it is unmistakable once you know what you are looking at: a dull, dark, seamless wall with no socket joints and no corrosion, often visibly out of round. If a length has been dug up, it is light, it is fibrous at a cut end, and it does not ring like clay or iron.

Why clearing it does not last

Orangeburg does not crack. It deforms — the City of San Luis Obispo notes it was recognized early on that fiber conduit pipe tended to deform under concentrated pressures over long periods. An oval run has no blockage in it. The pipe is the restriction, so a clearance removes what has collected and leaves the cause. That is why these lines come back on a schedule — see when the same backup keeps coming back.

What that means for the quote

Lining follows the host pipe, so a run that has lost its section is generally a replacement rather than a lining job. Of the trenchless methods, only pipe bursting can increase the diameter, because it breaks the old pipe outward and pulls a new one through — lining against bursting.

Get the run looked at

Tell us your ZIP code and what the drain is doing. We check it against partner coverage and put you through to an independent contractor who works that area. We do not do the work and you are never charged.

Call (866) 857-3202

Before anybody excavates.A camera survey is a different instruction from a repair, and the order matters. Tell us what the drain is doing and we will route you to somebody who covers your area. No charge to you, ever. Anything else the plumbing is doing can be raised on that call too.

Call (866) 857-3202