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  • Writer's pictureGilad Ifrach

When I turn off the faucet in the shower I hear a noise from the water pipe, what is this coming from?

Updated: May 28

The noise you're hearing from the water pipe when you turn off the faucet in the shower is likely due to a phenomenon known as "water hammer." Water hammer occurs when the flow of water is suddenly stopped, causing a pressure surge or shock wave to travel through the pipes. This can create a loud banging or thumping noise.

Here are a few common causes of water hammer:

  1. Sudden Valve Closure: Quickly turning off the faucet can cause the rapid stopping of water flow, leading to a pressure spike.

  2. High Water Pressure: If the water pressure in your home is too high, it can exacerbate the effects of water hammer.

  3. Loose Pipes: Pipes that are not properly secured can move and bang against walls or other pipes when the water flow is abruptly stopped.

  4. Air Chambers: Some plumbing systems have air chambers designed to absorb the shock of water hammer. Over time, these can become filled with water and lose their effectiveness.


  1. Slowly Close Faucets: Try to close the faucet more gradually to reduce the sudden stop in water flow.

  2. Install Water Hammer Arrestors: These devices are designed to absorb the shock wave created by water hammer.

  3. Check Water Pressure: Ensure that the water pressure in your home is within a normal range (usually between 40-60 psi). You can use a pressure gauge to measure this and install a pressure-reducing valve if necessary.

  4. Secure Loose Pipes: Make sure all pipes are properly secured with clamps or straps to prevent movement.

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