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Question DetailsAsked on 7/24/2015

What is the ticking noise in my water pipes?

This has happened a few times this summer in the late evenings. We hear a ticking sound coming from our pipes. It's very consistent...about one every second. From the 1st floor, it sounds like a very loud drip, but as we trace it back in the pipes, it's more of a ticking sound.

There is no leak. And when I turn off the water main valve, the sound stops. If I turn it back on too soon, the water fills back up in the pipes, and I can hear it coming in pulses (almost like the pressure is uneven) and then the pulsing turns back into the ticking sound. If I wait long enough, then the sound is gone.

Any thoughts on what it could be?

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Voted Best Answer

Here is a similar question with response which might help - the key is commonly whether it tapers off quick after water is shut off or continues for minutes (meaning creeping pipoe in most cases), and also if related to primarily or only hot or cold (hot more common by far if creeping pipes) -

In your cases since turning the water pressure off stops it and then starts it back up when repressurized, definitely sounds like pipe creaking - probably where it is passing through holes through joists.

Other thought - if you are near a booster pump (commonly this happens at night during peak usage periods, or after peak usage when a high-pressure pump is refilling a water tower) could be surges in the water from the pump causing pipe movement - get a $10 hose-thread pressure gage and put it on a hose bib and see if the pressure is surging.

Of course, this can also happen if you are on a well - especially if a piston type pump, in which case might mean your surge tank has filled with waster and needs draining to reestablish the air cushion.

Answered 3 years ago by LCD

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