General Guides

What Causes Low Water Pressure in kitchen Sinks? [Causes & Fixes]

Low water pressure in faucets in your house can be frustrating. You are not able to do any work properly, and when it happens in your kitchen, that is even more frustrating as you need to use Sink’s faucet quite often. And, for anything, if you have to wait more, it makes your feel tired. That is the prime reason to know what causes low water pressure in Kitchen Sink’s Faucet.  So, you can try fixing that out, and get the normal water flow. 

Both low and high water pressure is not good because you cannot work properly in any of these cases. Thus, normal flow is what we need.

When you feel there is the low water pressure in your kitchen faucet, the first thing you must check out that, whether the low pressure is only in the kitchen or in all the faucets of the house. If all the faucets are having the same issue, then investigate further to know if your neighbors are also facing the same. If they do, that means the problem isn’t with your faucet or pipeline but from the Municipal. In that case, you must make a call to your water provider, discuss the issue, and get it fixed from them.

But, if your neighbors are not facing the issue that you are facing. And, If the problem is in all the faucets, then you have to go ahead and consult an expert plumber in your area who can check out the pipelines, and suggest any fixation.

But, if the issue is only in the kitchen faucet, there is nothing much to worry about as in most cases, you can fix that by yourself by knowing just a few things. 

This is what you are going to study in detail in this article. 

How Can You Tell If You Have A Problem With Your Water Pressure?

If you notice that your water pressure has dropped suddenly, or if it is consistently low, then you may have a problem. Other signs of a problem with your water pressure include:

  • Water takes longer to fill up pots and pans at the sink.
  • The flow of water from the faucet is weaker than usual.
  • A decrease in the amount of water pressure from all fixtures in your home, not just the kitchen sink.

What Is Normal Water Pressure?

Normal water pressure in a home can vary depending on the age of the house, the size of the house, and even the location of the house. In general, most homes’ water pressure is between 40 and 60 PSI (pounds per square inch). This is considered to be within the normal range for most homes. If your home has water pressure that is outside of this range, it is important to have a professional plumber check it out to ensure that there are no underlying problems.

There comes Guage for checking water pressure. You can also try checking it without the gauage as well.

What Causes Low Water Pressure in Kitchen Sinks?

These are a few things that can cause low water pressure in kitchen sinks, including:

  • A blockage in the water line that supplies the sink.
  • A problem with the shutoff valve for the sink
  • A clogged aerator on the faucet.
  • A clogged Cartridge.

For fixing any problem, it is very important to know the causes of the issue. Same in this case, if the faucet has very low water pressure, you have to first find out what could be the reasons. So, now you know some probable causes that might be causing low water pressure in the kitchen sink.

While finding out the causes, there are a few terms used that you may or may not be aware of. So, if you are new to these internal things of faucets, allow me to explain these terms that might have kept you thinking.

What is an Aerator?

An aerator is a faucet attachment that mixes air with water, creating a stream with less splash and more consistency. Many modern kitchen faucets have integrated aerators to help reduce water waste.


There are several benefits to using an aerator on your kitchen faucet: 

  • It can help reduce water waste by as much as 30%. This is because the aerator evenly mixes water and air, resulting in a gentler stream of water that uses less overall resources. 
  • It can help improve the quality of your water by filtering out impurities and sediments. This means that not only will you be using less water, but the water you do use will be cleaner and better for cooking or drinking.

If you’re looking to save water and improve the quality of your kitchen faucet’s output, consider installing an aerator. It’s a quick and easy way to make a big difference in your home’s water usage and quality.

What is a Cartridge?

A cartridge in a faucet is a replaceable component that helps control the flow of water through the faucet. The cartridge contains a valve seat and a rubber or neoprene washer(o-ring), which seal the opening where water comes out of the faucet. 

Photo: Pinterest

What is Shutoff Valve?

A shutoff valve is a device that helps to regulate the flow of water in a plumbing system. It is usually installed near the main water supply line, and it allows you to turn off the water supply to your home in an emergency. Shutoff valves are an important part of any plumbing system, and they can help to prevent serious problems like flooding. 

Shutoff valves are used sinks as well so that when you want to stop the water flow, you can shut it off, or you can just set it in a way that it can allow low water flow as well.

How to Fix Low Water Pressure in Kitchen Sink’s Faucet?

Now, you know how to find out if you have low water pressure in kitchen sink only, and also, you are pretty much aware of what all could be the causes. So, let’s find out how to troubleshoot the issue, and try fixing it.

A few things you can do to troubleshoot low water pressure in your kitchen sink:

Check Shutoff Valve

At times, either you or your maid or even kids in the house touch the shutoff valve and close it a bit or even at times, closed it fully. 

If fully closed, there will be no water pressure in the kitchen sink’s faucet. If it is partially closed, there will be very low water pressure in the faucet. So, make sure it is fully open. Now, make sure it is opening and closing properly without any force. If all of these are fine, and you are still facing the low pressure in the faucet, let’s  move to the next step.

Check the Aerator

As already explained about the importance of Aerator in the faucets, it is quite likely that they get clogged of prolonged usage. There might be debris or build-up of minerals over the period of time that can cause clogging which restricts the water flow causing low water pressure in the kitchen faucet.

So, just unscrew the aerator, clean it with a brush, or if it is not clean yet, keeping it soaked in vinegar overnight will clear all the clogs. And, then fit it back, and see if there is more water pressure.

In most cases, this is the main cause, and this would fix the low water pressure issue.

A simple way to check the flow is when you take out the aerator, just open the faucet and see how is the flow, and if you see the flow is pretty better. Then the cause is 100% from the aerator, and cleaning it will fix the issue.

From my personal experience, I would advise you to clean the aerator in every 6 months. Or you can just hang a bag of vinegar on the faucet in a way that the aerator is submerged in the vinegar, and leave it overnight. This will clear the clog.


This periodical cleaning of the aerator will increase the overall life of your faucet system and also you won’t face low water pressure issue.

Check the Cartridge

Worn-out or clogged cartridges can be the cause too. So, do check that as well, and if there is clogging, unclog it, or if it has worn out, try replacing it, and see if that helps.

Check the Water Pipeline

This is something that needs expertise; thus for checking out the water pipeline for any blockage or leakage, you need to get an experienced plumber on to the work. He will check out the entire pipeline and find out the issue. Accordingly, he will suggest something. Based on that, you can get that fixed.

Check the Complete Faucet

If you don’t find issues in any of these, there might be any other issue with the Faucet which you can either check or get checked by any plumber. I would recommend you to buy the best Faucet for your kitchen instead. The new one will work better.

Although these are the causes that can cause low water pressure in the kitchen sink’s faucet, most of the time, the issue is with the Aerator only because we often forget to unclog it. We only notice when the water flow reduces.

What Causes Low Water Pressure for Hot Water but Normal for Cold Water?

There are times when you find out that the kitchen faucet’s low water pressure is just for hot water. That means, when hot water is coming, it comes with low pressure but with cold water, it comes at fair pressure.

If this happens, then the problem is not within the Faucet but it could be the issue with your Water Heater or Geyser. Generally, people don’t flush out their water heaters periodically. Thus, a lot of sediments get accumulated in the Geyser, and when the hot water comes out of this, it carries sediments that gradually clog the Aerator. 

To solve the issue, it is important to flush out the water and sediments from the water heater. Also, make sure to check if the heater outlet valve is fully open.

How can you increase water pressure in your kitchen sink?

As discussed above the causes, if you are able to fix them, the water pressure will automatically increase. You can try these:

  • Remove any debris or build-up from the aerator and cartridge on the faucet. If they are in bad condition, consider replacing them.
  • Make sure the shutoff valve is fully open.
  • Make sure that there is no blockage in the water pipeline.
  • If you have a pressure regulator for the house, check to see if it is set properly.
  • If these DIY things don’t work, call an experienced Plumber to investigate the issue.


Finding out the causes of low water pressure in kitchen sinks gives you an idea of fixing the issue, and ultimately increases the water pressure. These were a few of the ideas that you can check out, find the causes, and fix the low water flow issue.

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:)

Add Comment

Click here to post a comment