If your tap makes noise when you turn it on or off, the cause is usually related to water pressure, worn internal parts, or minor air movement in the pipes rather than serious plumbing damage.
The type of noise often helps identify the issue.
The Most Common Reasons This Happens
1. High Water Pressure
Excessively high water pressure can cause whistling, humming, or vibrating sounds when water flows through the tap.
If multiple taps are noisy, pressure may be the cause.
2. Worn Washer or Cartridge
Inside the tap, washers or ceramic cartridges control water flow. When these parts wear out, they can vibrate as water passes through, creating squealing or buzzing noises.
This is one of the most common causes.
3. Loose Tap Components
If internal components are slightly loose, the tap may rattle or vibrate during use.
Tightening fittings may reduce the sound.
4. Air in the Pipes
Air trapped in the plumbing system can cause sputtering or irregular flow sounds.
If you also hear pipe noise after flushing a toilet, see:
→ Why Is My Toilet Making Noise After Flushing?
5. Partially Closed Shut-Off Valve
If the valve under the sink is not fully open, water may pass through at higher velocity, causing noise.
Ensure it is fully open and observe whether the sound changes.
Is This Normal?
It may be minor if:
• The noise only occurs while water is running
• Water pressure seems normal
• There are no leaks
It may require attention if:
• The noise is very loud
• The tap vibrates visibly
• Water flow becomes inconsistent
If you’re also experiencing low water pressure, see:
→ Why Is My Tap Water Pressure Low?
What You Can Do
If your tap is making noise, you can:
• Check that shut-off valves are fully open
• Reduce water pressure if it is set too high
• Inspect for visible leaks
• Replace worn washers or cartridges
If noise persists or worsens, replacing internal tap components often resolves the issue.
For more related issues, see: