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  1. #1
    Join Date
    Mar 2007
    Location
    Philadelphia PA
    Posts
    3,177

    Default sewer pump noise

    New construction bathroom sewer pump sounds fine and quiet while operating, but after pump shuts down, it starts making a noise like an out-of-balance washing machine for about 15-20 seconds. The pipes shake while this is going on, too.
    Anyone know what would cause this?

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  2. #2
    Join Date
    Mar 2007
    Location
    Connecticut
    Posts
    1,828

    Default Re: sewer pump noise

    John, Thats the water washing back down the pipe and smashing on to the backflow preventer.
    Wait till the hard stuff gets in there
    They never support the pipes well and they shake like there's an earthquake.
    I always write it up as requireing proper support.
    We don't want those connections breaking loose.


  3. #3
    Join Date
    Mar 2007
    Location
    Philadelphia PA
    Posts
    3,177

    Default Re: sewer pump noise

    Wayne - Thanks! I don't see many of these, and ones I have seen didn't make this noise.

    "There is no exception to the rule that every rule has an exception." -James Thurber, writer and cartoonist (1894-1961)
    www.ArnoldHomeInspections.com

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