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Kitchen Sink Leakage: Causes & Solutions

The kitchen sink in your house is the busiest place. Since it’s always busy, it’s also prone to the most damage. A leaking sink is one of the most common problems in any kitchen. 

How do you deal with kitchen sink leakage? 

To deal with a leaking kitchen sink, you need to find the source first. Find where the leak is coming from. Generally, they are due to faulty parts like gaskets or washers. Once you find the problem, get it repaired or replaced.

We’re going to discuss the possible causes of kitchen sink leakage and how to deal with them.

Let’s dive in-

Kitchen Sink Leakage: 4 Possible Causes and How to Solve Them 

Your kitchen faucet might be leaking for a plethora of reasons. Finding the solution and fixing them is the way to go.

Don’t be anxious seeing the several possibilities of leakage. If you can fix a pinhole leak in a pressure tank, then this won’t cause you much stress.

Here are some of the most prominent types of leaks and how to deal with them-

Leaking Drain 

The drain on your sink has to deal with a lot of wear and tear on a regular basis. As a result, the drain might start leaking. It’s also one of the basic causes of sink leakage.

In order to find any leakage in your drain, put it on the drain cover and fill it up. Once it’s filled, use a flashlight and try to notice any point of leakage across the drains. Emphasize corners and places where the parts meet. 

You can also use a clean piece of tissue and press it around the drains. If the tissue soaks up, you know where the leakage is. 


Dealing with a leaky drain pipe is pretty simple. The pipes are generally screwed together and sealed. You can use plumbers putty to seal drain pipes. If the putty is too thin or gets too dry, leaks can happen. 

Check if you have any loose screws in the system. If the screws get loose, you need to tighten them up with a wrench.

If the putty is at fault, get rid of it by scraping it off. Afterward, add a new coat of putty and let it set. However, if any part of the drain is broken, get it replaced immediately. 

Leaky Faucet 

Leaky faucets are another common reason behind kitchen sink leakage. They’re also the easiest to notice compared to others. Turn your faucet off and check it after a while. If you see water leaking out of it, it needs to be fixed.

Look for puddles of water around your faucet whenever someone’s done using it. Sometimes, your faucet might be leaking from the bottom. Then, look under the water to see any wet spots.


The most common reason behind faucet leaks is worn-out washers or gaskets. For that, you need to replace them and you’re good to go! However, if you think the water logging is due to your faucet’s size, you can change the size of your faucet hole as well.

Faucets can be broken beyond repair, causing the leak. It can happen due to your faucet getting old or other damages. In that case, replace the faucet to prevent any hassle.

Loose Connection 

Sometimes, your sink’s water supply line might be the cause of your leak. If you notice the leak being constant, it’s probably due to the supply line. Although finding the leak can be a bit tough, it’s the crucial part. 

A standard faucet has two water supply connections. If you have a sprayer, the number of connections can become three. The leak could be in any of these spots, so check carefully. 

One of the biggest problems with a loose connection is that they’re hard to detect. So, the water can damage your cabinets and other appliances before you notice them.


First of all, you need to find the source of the problem. Extending the faucet supply line to detect such problems easily. Leaks mostly happen due to corrosion or broken gasket systems. So, check these two before checking anything else.

Try tightening the connections at first. Look for loose screws, and tighten them up. If the screws are tightened up, the gasket might be leaking. Replace the gasket and the leak will be gone for good! 

If you’re wondering which is the right gasket for you, we got you covered! Here are our recommendations for some of the best gaskets out there:

Product 1
Product 2

These are some of the best products at their price range. Check out their reviews for more! 

Damaged Washers 

Washers are small pieces of metal or rubber that prevent leaks. They seal any gaps and prevent anything from passing through. However, they can get worn out very easily, causing a leak. 

Whenever you’re using a faucet, the washers are pushed against the valve. Their movement causes friction that can damage the valves.


While washer problems are very common, they’re also very easy to fix. You need to replace your washers and you’re good to go! Most of the time, they’re very easy to fix. Open the faucet and change the old washers for new ones. 

In some cases, you might need to remove a stripped set of screws from your faucet.That might be a bit time-consuming.

With that, we’ve discussed the most common causes of kitchen sink leakage and their solutions! 


Question: Is there a tool to detect water leakage? 

Answer: There are a few tools that can help detect the location of leakage based on sound. However, they’re mostly handled by professionals and not suitable for household usage. 

Question: Can I use putty to seal leaks? 

Answer: Yes. But adding putty can be a temporary solution to your problem. However, you need to solve the leak as soon as possible. Otherwise, the water will only cause the leak to disintegrate. 

Question: Can you fix a leak temporarily? 

Answer: If you aren’t very savvy with plumbing tools, you can choose to temporarily solve your leak. Deal with the leak and wait for a professional to make repairs or replacements. 

Final Word 

Your kitchen is an integral part of your house. Any problem in your kitchen will only make your life harder. So, dealing with them as soon as possible is a good idea! 

We’ve discussed all the possible causes and solutions to kitchen sink leakage. 

We hope you find this article helpful!