won't hold pressure

Discussion in 'Pumps and Tanks Well Forum & Blog' started by Mark64, Apr 27, 2008.

  1. Mark64

    Mark64 New Member

    Apr 27, 2008
    Another newbie here,

    Two days ago, I heard my well pump kick on and was puzzled because it was late and no one was using any water. So I watched the pressure gauge drop from 50 psi to 30 psi in about 50 minutes - again no one using water - and the pump kicked on again. When I shut off the main valve, pressure stayed constant. I shut every valve to every faucet I could get to (except the 2 bathtubs don't have access/shutoffs) and opened the main. Again, pressure dropping. I don't see any evidence of leaking water in the house. After 2 days, if I had a leak, it would have shown itself, right? I can hear water moving (no leaking) through the plasitic water softener inlet/outlet port (a slight hissing/trickling sound) which stops when I shut off the main valve.
    Plumbing is original to 10+ year old house.

    Could anyone offer help or advise, please. Thanks in advance.
  2. thassler

    thassler Member

    Dec 5, 2006
    Systems Analyst
    Leaking toilet tank valve maybe? Add a little food color to the tank and see if any gets to the bowl during non-use.
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  4. Mikey

    Mikey Aspiring Old Fart, EE, computer & networking geek

    Nov 8, 2005
    Central Florida
    If your plumbing is under a slab foundation, I may have some very bad news for you.
    Last edited: Apr 28, 2008
  5. speedbump

    speedbump New Member

    Jul 15, 2005
    Water well and pump tech.
    Riverview, Fl.
    Mikey's right about that. With copper plumbing and chlorinated water, big expense when the copper starts with the pinhole thing.

  6. Gary Slusser

    Gary Slusser That's all folks!

    Aug 31, 2004
    Wherever I park the motorhome.
    Check the (either) end of the softener drain line for water running (you can take it off the softener if you can't get to the far end). If there is water running out to drain, then put the softener in by-pass, you've found your leak.
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