sump pump versus grinder pump or both?

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by rrah, Oct 5, 2007.

  1. rrah

    rrah New Member

    Joined:
    Oct 5, 2007
    I've searched all over the net so am hoping to find an answer here. If one has a sealed grinder pump that's hooked up to the city sewer system, does one also need a sump pump or does the grinder pump perform that function also?

    Thanks for any help in clearing up my confusion.
     
  2. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Joined:
    Sep 2, 2004
    Occupation:
    Retired Systems engineer for defense industry.
    Location:
    New England
    A sump pump is designed to remove ground water. A grinder pump reduces solid waste to a slurry and pumps it out. A solids pump moves solids and liquids (similar to a grinder, but needs a bigger outlet because there are still chunks).
     
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  4. got_nailed

    got_nailed DIY Senior Member

    Joined:
    Jan 11, 2006
    You would also need a sump pump if you have the ground water issue. The grinder pump should be sealed for the waist water and having ground water flow into it would also let the shit water flow back into the ground.
     
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