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Old 04-15-2016, 07:09 AM   #1
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Water in Sewer Line?


This might be a very dumb/amateur question, but is there supposed to always be water in the sewer line?

For example, if I open up the clean out going to the city line from my house, you can clearly see a stream of water (not moving unless you flush).

Is this normal or is it supposed to be dry until you flush a toilet or drain elsewhere, etc?

As an added note, if I pour water in my vent on my roof, it clearly sounds like it's pouring into existing water.

Normal?
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Old 04-15-2016, 08:30 AM   #2
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Re: Water in Sewer Line?


Some places have a whole house trap. In those cases you will have water in the trap. Otherwise it is not normal to have water laying in the pipes.
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Old 04-15-2016, 09:08 AM   #3
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I live in Dallas and the house was built in 1957. Does that shed any light on how it might have been designed?
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Old 04-15-2016, 11:17 AM   #4
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Re: Water in Sewer Line?


Any main clean out that I have opened has always had a little fluid in it. I always assumed it was from the solids floating down in stages with every rush of new fluid. But until the solids reach the end of any lateral it could cause a small amt fluid to reside in the line.
Is the drain operating properly? Was there a need to pull the clean out?
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Old 04-15-2016, 04:08 PM   #5
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Re: Water in Sewer Line?


Quote:
Originally Posted by TiredDigger View Post
This might be a very dumb/amateur question, but is there supposed to always be water in the sewer line?

For example, if I open up the clean out going to the city line from my house, you can clearly see a stream of water (not moving unless you flush).

Is this normal or is it supposed to be dry until you flush a toilet or drain elsewhere, etc?

As an added note, if I pour water in my vent on my roof, it clearly sounds like it's pouring into existing water.

Normal?
How much water are you talking about? A 1/4 or 1/2 inch wouldn't concern me. If the line is half full, I would say you have a blockage.
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