Reasons for Low Water Pressure in Kitchen Sink Faucet and Fixing

Low water pressure in the kitchen sinks is a common thing to face. If you are also the one who is wondering about the reasons behind that low pressure in the kitchen sink we welcome you to the article, here you can find the most possible reasons behind that low pressure in the kitchen sink and the fixing techniques too.

Some usual reasons behind the low pressure in the kitchen sink can be clogged aerator, water line breaks and casual repairs can also be the contributing factors of the low pressure in the kitchen sink.

The kitchen is one of the most used areas of the house and so that of the kitchen sink. If it’s not in up to the mark condition or not working well it will slow down your efficiency in the kitchen and make working in the kitchen more troublesome and tiring. So, don’t worry it is a simple DIY task.

Reasons for low water pressure in the kitchen sink faucet:

Before going towards the fixing you must have the proper understanding of the causes. Firstly you have to make sure that the problem of low pressure is only in the kitchen sink faucet and not in the whole house. If the problem is not localized to the kitchen sink faucet but is in the whole house it may have the following reasons.

  • Waterline breaks
  • Leaking toilets
  • Shut off valves
  • Pressure reducing valves.

If the problem of low water pressure is localized to the kitchen only it may have the following reasons behind it.

  • Clogged faucet aerator
  • Blocked cartridge

Fixing the low pressure in the kitchen sink faucet:

If the problem is only localized to the kitchen area you are lucky because it’s easy to fix that localized problem and just need two checks to resolve that.

Clogged faucet aerator:

The aerator is a device that attaches with the faucet which allows infusing air into the water and limits or controls the water pressure according to your need. This aerator can be got blogged by time due to mineral deposits. When this happens follow the following steps to fix that up,

Step 1: Put a plug into the sink drain so that any part can’t accidentally fall and drains off.

Step 2: Remove the aerator from the end of the faucet by simply twisting it with your hands. If you are using any equipment try not to damage the faucet and remove the aerator with full care.

Step 3: Disassemble the aerator and wash off the deposit minerals with help of a toothbrush or you can boil the aerator too in the vinegar water mix for a satisfying mineral’s wash off.

Step 4: Test the water flow through the faucet only without the aerator if the water flows normally through the faucet without the aerator you going in the right direction.

Step 5: Now fix the cleaned and boiled aerator the faucet and check the water pressure. It should now run smoothly with having normal water pressure.

Blocked cartridge

If you have fixed the faucet aerator and still the water pressure is low then there may be a problem in the cartridge it may the cartridge that has blocked.

Follow the following step to check that blocked cartridge.

Step 1: As before the start of the process by putting the plugin in the drain hole so that no parts can accidentally go into the drain hole.

Step 2: The valves that are present beneath the sink turn them both off.

Step 3: Pop up with a suitable screwdriver and remove the faucet handle with at most care without damaging any part.

Step 4: For the removal of the cartridge first remove the cartridge nut and place them in the lined Oder so that you will remember how to fix them all back.

Step 5: Clean the cartridge and remove the things that are blocking the water pressure.

Step 6: Assemble the cartridge back to its position after cleaning.

Step 7: Turn the water valves on and test the water pressure through the sink faucet.

After doing all that if you remain unable to restore the water pressure in the kitchen sink faucet then your problem is not localized. Don’t worry we have other solutions for you. Just keep reading and get your solution. Took your engineer cap on and now try the other solutions to fix that low water pressure problem.

Waterline breaks:

A break in the water line can occur from time to time due to some unknown potential reasons. Detecting he that water break is not that easy and not that of its repairing.

The break in the water line can be confirmed by the meter readings. For that close all the faucets and take the meter reading after 4 to 5 hours take the meter reading again in the same manner. The difference in the meter reading can tell you about the line break.

The problem of the water line break is unfixable on your own so you have to call a professional problem to fix up this problem.

Leaking toilets:

Leaking toilets can cause low water pressure in the kitchen sink and as well in the other of the house too.

The leaks can occur due to a break in the supply lines of the toilet tank, there could be a stuck flapper, and it could be a faulty connection or a wrapped flapper too.

This problem like the above is unfixable on your own, so you have to call a professional problem to fix it up.

Shut off valve:

The shut-off valves are the valves that shut the water off to the kitchen sink can be the reason behind the low pressure in the sink faucet. These valves that are not being in use may get clogged with mineral deposits these deposits can weaken the washers so leaks may develop near these valves.

Firstly check whether these shut-off valves are completely open or not if you have two shut-off valves beneath your sink inspect both of them. If they are already fully opened then you have to replace them off.

Before replacement check whether either the shut-off valves need replacement or just one of them needs that treatment?

Before that replacement attempt shut the main water line so it will not disrupt your working. First remove the water line connection to shut off the valve, lose a nut with specialized equipment rotating it in an anti-clockwise direction, then remove the compression nut, removal of this compression nut make the shut-off valve comes out of place.

Now replace the old one with a new shut off valve and tighten that precisely, too much tightening can cause damage to the compression nut in the valve.

Pressure reducing valve:

The pressure reducing valve is also known as the PRV, is located at the entrance of the residency. Check that valve by readjusting it if it can restore the pressure in the kitchen sink or not. If it’s not causing any change in the water pressure you can change it too.

Replacement of this valve is not that difficult you can do it on your own or for your ease you can hire a certified plumber too to do the task.

Maintenance of kitchen sink faucet:

To avoid the low pressure in the kitchen sink faucet try to maintain your kitchen sink faucet and its related entities that is the shut-off valves and the aerator attached to the sink faucet.

The normal faucets don’t need day to day through cleaning either the shut-off valve does but it’s important to at least clean the aerator weekly and shut off valves monthly to maintain the normal pressure through the kitchen sink faucet.

This cleaning can disrupt the deposition of minerals in the faucet aerator and make the flow normal form it otherwise if not cleaned weekly or on monthly basis, the deposition become hard and become difficult to remove from the aerator and you remain with no other option but just to replace it with a new one.

The same is in the case with the shut-off valves because these are not in regular use need some maintenance to have them in good working condition.


So, from the above discussion, it is concluded that if your kitchen sink faucet is not working well and giving you a low water pressure you are somehow trapped in a little trouble. This low water pressure problem not only needs laborious fixing but if not fixed will interrupt your regular working in the kitchen by lowering your efficiency of the work.

I hope you will be lucky enough that you will be facing the low water pressure only in your kitchen sink and not in the other areas of the house so that fixing becomes easy for you. If not you are now provided with the other options too. I hope the article brings ease to your life and your problem will get sort too. If you want to know about other DIY tasks let us know in the comment section below it will be highly appreciated.

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