Why Does My Faucet Whistle? (5 Causes Explained)

A faucet that whistles may be something that you have come across and found very intriguing. It can be both funny and worrisome. Ever wondered what causes the faucets to whistle? Let us try finding the reasons for the whistling sound in the faucets.

Quick Answer:

One of the primary reasons why your faucets whistle can be the mineral build-up in your faucets. This can happen primarily due to the hard water supply at your place. The mineral build-up makes the openings narrow down in your faucet, and this would result in the whistling noise.

Why Does My Faucet Whistle – The Causes of Whistling Faucet

Some prime causes of the whistling faucets can be due to the high water pressure, wear and tear of the plumbing system or component, mineral buildup in the faucets, and other degradations. 


Here are a few prime reasons for the whistling sound in your faucets:

Issues with the residue 

The accumulation of residue or minerals in the faucets is the prime cause for the hissing sound or whistling sound. The debris can also form in the faucet stem, causing the issues with the faucet making whistles. The deposits restrict the proper flow of the water, thereby restricting the flow of the water. 

Problems in pipes

The whistling sound in the faucets can be due to the plumbing lines. It can be because of the galvanised pipes in many cases. The prime reason is due to the formation of rust and scale. You can also replace the pipe or tap if required. 

High pressure of water 

High water pressure can be yet another cause for the faucets whistling. It can happen when the water pressure is too high. You can test the pressure using a pressure gauge. The ideal water pressure should be around 50 to 60 PSI. If your water pressure is too high, you will need to reduce the water pressure to the correct level. 

Issues with valves

The problems with the valves can also result in the hissing or whistling sound in your faucets. The wrong size of the valve has been known to be the prime cause of the issues. Make sure that you have followed the proper instructions from the manufacturer. 

A dislodged or worn-out washer 

The nozzle on your faucet comes with a washer. It can wear out over time and can cause a whistling sound. You can either move the washer to the proper place or change it if required. A faucet with running water can be one of the reasons for the faucets making a whistling sound. If you are replacing the washer, ensure that you have the compatible one per the manufacturer’s instructions. 


How Do I Stop My Tap From Whistling?

The fixes used for the whistle in the faucets would be based on the exact reasons that may be causing the hissing sound. You can analyse the exact cause of the faucet whistle and apply the proper fixes in tune with the causes. 

How to fix issues with the washer?

A dislodged or loose washer can be one of the easiest options to help you fix the whistle sound on your faucet. The wrong size of the washer can be a concern and will need to be addressed. It can also be due to the aerator that you are facing problems with your faucet. 

You will need the following tools for the purpose:

  • Adjustable pliers
  • Rubber cleaning glove
  • Vinegar
  • Correctly sized washer

Turn off the water supply and remove the washer or the aerator, as the case may be. The aerator can be unscrewed by hand, but if you are unable to, you will need to use the adjustable pliers for the purpose. If the washer is an issue, either reseat it properly or replace it. If the issue is with the aerator, you can soak it in vinegar to unclog it. 

How to fix issues with Valves?

In case you suspect or suppose an issue with the valves, you can apply the following fixes. If you notice that the valves have an issue with one or two handles, let’s begin with the problematic handle first. 

You will need the following tools to fix the issues:

  • Wrench or locking pliers
  • Screwdriver
  • Replacements for rubber parts as needed
  • Replacements for gasket springs as needed
  • Vinegar

You should turn off the water supply before disassembling the valve assembly. You may use the locking pliers or wrenches as the case may be. If you notice the nut is loose, you can tighten it to fix the error. If the valve can be repaired, it may be the right option to go with. Replace the gaskets, O-rings, gasket springs, or any other worn rubber parts, as the case may be. If the valve has mineral deposits, soak it in vinegar overnight and then fix it back. 

If you have to replace the valves, make sure that you have checked the compatibility of the valve. 

How to Fix the Issues With Pipes?

Another possible cause for the whistling sound from the faucets can be due to the problems with the pipes. The pips can be due to the buildup of the scale and rust. This is one of the common issues with the galvanised pipes. The restrictions in the pipes affect the water pressure, and this pressure is the cause of the whistling sound. 

You will need the following materials to fix the issues with the pipes:

  • Pressure gauge
  • Replacement pipe and parts

Check the water pressure available at the point of issue. You can do so with the help of a pressure gauge. Screw the gauge onto one of your spigots, and you will be able to fix the error. If you find the water pressure exceeding the normal levels, you will have to adjust the pressure regulator or will need to lower the cut off pressure of the pump. If you are uncomfortable, you can get the assistance from a plumber.

The Closing Thoughts

The issue of faucet whistles can be due to several issues and causes. Fixing it can be quite a complicated task, and eliminating the faucet whistling is much easy if you follow the steps and tutorials that we have outlined in the above discussion. If the fixes featured here do not work for you, it would be advisable to get assistance from a water technology expert. He should be able to answer your query on Why is my faucet hissing. 

A Few FAQs

Why does my faucet make a high-pitched noise?
The high-pitched noise from the faucets is caused by the excessive water pressure in your plumbing system. The flow speed increase can also be one of the causes of the high-pitched noise. If the water pressure exceeds 60 PSI, you will find the pipes and faucets giving out a high-pitched noise.
Why is my faucet hissing?
The prime reason for a hissing sound from a faucet is that your water supply has a very high pressure. Using a pressure reducer would be the best option to help you fix the issues.

About the author

Atish Ranjan

Atish Ranjan is the founder of WaterBrower. The water-related problems faced by him in his childhood led him to take this kind initiative to help many others who might be facing similar problems. He has been into research and water testing wherein he has found great water treatment solutions in different regions of the world. This blog is about everything that he has learnt during this study. Hope it helps many:)

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