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Thread: will low flow toilet work on old septic system?

  1. #1
    DIY Junior Member Ten High's Avatar
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    Default will low flow toilet work on old septic system?

    Theoretical question:
    Have a 1950s (6gallon?) toilet (Crane) on even older septic system. I am wondering if a modern 1.6 gallon toilet will work with this old system. here's the existing setup:
    From upstairs toilet, waste pipe has a vertical drop of about 12 feet to right angle turn , then pipe goes horizontal about another 12 feet to another right angle turn, then a horizontal straight run of almost 30 feet out of the house and continuint straight another 20 feet or so to the concrete septic tank . Its about a 1930ish system.
    Just wondering, if I replaced the old fashioned toilet, if the new modern low flow toilet would have enough water discharge to flush things out to the septic tank ?
    The existing system as is works fine and always has, but eventually want to put in all new bathroom fixtures.

  2. #2
    Forum Admin, Expert Plumber Terry's Avatar
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    With that distance it will be fine.

  3. #3
    Moderator & Master Plumber hj's Avatar
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    The toilet does NOT care where its waste is going. If it will work with a 100' line to a city sewer, it will work for a septic tank.
    Licensed residential and commercial plumber

  4. #4
    TROJAN WORLDWIDE SALES RP MACPLUMB 777's Avatar
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    WHAT THEY SAID !

    BUT BE SURE TO CHECK OUT TERRY LOVES REPORT ON LOW FLOW TOILETS !

    http://www.terrylove.com/

    MACPLUMB 777

    E-MAIL
    JERRYMAC@TROJANWORLDWIDE.COM


    35 YEAR MASTER PLUMBER, HEATING, ELECTRIC, DRAINS, FIRE SPRINKLERS, WATER HEATER
    AND BOILERS SINCE JAN, 1989

    281-706-1631 7 DYS A WEEK SALES AND TECH. SUPPORT
    Trojan Worldwide Web Site


     



  5. #5
    DIY Junior Member Ten High's Avatar
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    Everyone, thank you for the answers. Will check out the modern fixtures knowing this.

  6. #6
    In the Trades Gary Swart's Avatar
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    Just keep in mind, low flow toilets are not equal. Do heed the advice on Terry's web site.

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