Sudden draining of water inside house

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    • #279895
      marian rozen

      Something that has been bothering me, and Google is no help in finding a solution:

      I live in a larger two story urban home with three bathrooms on a municipal water supply, and periodically I will be startled by a sudden LOUD rushing of water through the drainage pipes. No fixtures are in use when this happens, and as far as I can tell the draining water is limited to what is already standing in the supply pipes.

      When the trickling/draining is done, my pipes are left with lots of air remaining inside; if I turn on the water at any faucet, it will spit and sputter for a few seconds, and flushing the toilet results in an unpleasant BANG as the air exits the supply line as the tank refills. I will hear my water heater make noise as if it is suddenly heating a bunch of water at once. (This heater is brand new; could this be the issue?)

      I can’t find leaks coming from any fixtures, nor am I finding any unusual areas of moisture.

      Help? Any ideas as to what could be causing this, or how to make it stop?

    • #301915
      nicktheplumber

      jenga,

      I read and reread your post with great interest, and I can’t make sense out of your problem. How do you know the sound is coming from your drainpipes? The only way water can enter the DWV system is by going into a fixture drain… Do you have leaking faucets or a leaking water closet tank? Sputterring faucets indicate air in your water supply pipes.

      NtP

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