Every time I turn on my faucet, I hear a loud “clunk”. What’s causing this noise?

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Every time I turn on my faucet, I hear a loud “clunk”. What’s causing this noise?

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  1. Gentlemen Plumbers

    A common cause for loud clunking sounds when turning a faucet on or off is Water Hammer. A water hammer is a surge of pressure or a wave that occurs when a fluid is stopped or forced to change its direction suddenly. It occurs when a valve is suddenly closed and a pressure wave builds in the pipe. Water hammer can cause several problems from noise to vibration and sometimes even a pipe burst.

    The first thing you can do is identify where the water hammer is occurring. Have someone turn on and off the faucet and try to identify where the sound originates. Many houses today have water hammer arrestors, and you may need to install one. I recommend you contact a professional if this is the case.

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