Clogged Backwash Drain Line

Aug 16, 2007
1
#1
Hi. The pipe that drains water and DE from my filter during backwashing is clogged (the drain line goes directly to the sewer). I applied pressure to the line via garden hose and a pool maintenance man applied pressurized air. In both cases the clog held (the pool guy said he's never heard of a backwash line clogging). I'd like to know if anyone has heard of or experienced this problem and, if so, what the solution was. Thanks in advance for your advice.
 

duraleigh

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TFP Expert
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In The Industry
Apr 1, 2007
31,321
Sebring, Florida
#2
Hi, Kevin,

Welcome to TFP. That's pretty difficult to clog the backwash line, Assuming it's pvc pipe, nothing can get in to clog it unless it's broken somewhere. My only other thought is that the drain end may be clogged from something backing up in the sewer.

Never heard of it and have no clue. Since you can get air to it, I assume you can snake it.
 

matt4x4

Well-known member
Apr 2, 2007
312
#3
Some animal may have crawled in from the sewer end and died in there, try drano, it may be enough to break a bit of it down around the perimeter and allow it to flush out.
 

The Mermaid Queen

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LifeTime Supporter
Mar 28, 2007
2,522
Northern KY
#4
What about using what we call a 'water weenie'? Somebody has posted photos and the real name before... it is a rubber hose-end attachment that you put into the unclogged end of pipe. Turn on the water, and the pressure builds up in it, and it swells up to close off the pipe. Then when the pressure gets high, it blasts out the clog.
You can get them at HD or other hardware store.

In re-reading this description, well, :oops: