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I'm trying to locate my sewer cleanout outside the house. Is it usually just a straight line from my basement drain hole?

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98% of the time the answer is no. It is a straight line from the bottom of your main stack. The drain hole is a branch off your main stack. This can vary though but this is the norm in the US.

  • and I can't use a snake through the basement drain hole, because it has a u-trap? – Rollo R Jan 25 '16 at 17:02
  • It is probably a larger u-trap so you can probably get past that. If your issue is in between your main stack and drain then give it a try. If you problem is outside your house you are probably wasting your time. – DMoore Jan 25 '16 at 17:11
  • My basement drain is starting to backup, and I can't find a cleanout inside or outside the house. So frustrating. – Rollo R Jan 25 '16 at 17:36
  • There will be a cleanout in your yard for sure. Also you should have one in your main stack and quite possibly on your roof. – DMoore Jan 25 '16 at 17:37

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