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Thread: Toilet Draining Problem

  1. #1

    Default Toilet Draining Problem

    Hi All. I recently completed a garage addition to my home. The builder roughed in plumbing for a full bathroom. I framed in the bathroom and hooked up water and sewer this past weekend. Problem is the addition's sewer line is just a little bit lower than the connection to the exsisting main line to the septic tank so, being a gravity fed line there is standing water in the pipe ( I opened the cleanout valve to confirm this). The toilet is very slow to flush, I have to hold the handle down until all the water goes out of the bowl. It does flush however I am afraid to use it as I imagine the line will just clog up. The bathtub and sink drain just fine with no backup.Will this water eventually make it to the septic tank? It is about about a 26 foot run from where the sewer pipe exits the garage to the septic tank. Short of "lowering" the septic tank what solutions are there?I did a web search and noticed that there are sewage pumps out there. Is this the solution to push the water/sewage up the pipe to the septic tank? Would I be able to hook one up externally? Say I splice it in-between where the sewage line exits the building and the sewage line to the septic tank? Any thoughts? Pump and H/P recommendations? Thanks in advance for any suggestions.

  2. #2
    Retired Defense Industry Engineer jadnashua's Avatar
    Join Date
    Sep 2004
    New England


    If you go with a pump, it is installed in a pit that accumulates stuff until there is a load for the pump to empty. RUnning the pump for short bursts would quickly kill it. You'd have to dig a hole for the pit, then you can pump it from there.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  3. #3

    Default Toilet Draining Problem

    "RUnning the pump for short bursts would quickly kill it. You'd have to dig a hole for the pit, then you can pump it from there"

    Thanks for the reply. I'm assuming the pump works like a sump pump, like you mentioned, when water/sewage accumulates to the proper level in the tank it turns on the pump and shoots it up the line to the septic tank. So i would dig a pit outside the building where the sewage line exits and put the pump there.

  4. #4
    Plumber plumber1's Avatar
    Join Date
    Aug 2005


    Not being able to eyeball it, I wouldn't let a flat spot bother me till I knew more.....

  5. #5
    Moderator & Master Plumber hj's Avatar
    Join Date
    Aug 2004
    Cave Creek, Arizona

    Default pump

    Your description of the pump implies that you visualize it as an inline pump. It is not. There is a separate pipe from the pump that is tied into a sewer line somewhere and the water leaves the pit through that pipe. It could connect to the line to the septic tank, but that pipe does not connect to the sump basin.


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