Blocked kitchen sink is a really common household problem.

But how does kitchen sink get blocked in the first place?

Common reasons for blocked drains

Food waste

One of the main reasons for a blocked kitchen sink is food waste. Bits of food, especially greasy or fatty substances, can get stuck in the pipes. Over time, these bits build up and cause a blockage. Avoid pouring oil or grease down the drain, and always scrape leftover food into the trash before washing dishes.

Soap scum

Soap might seem harmless, but it can cause blockages too. It is made with fat, which can mix with the minerals in water to form a hard residue, called soap scum. This scum can cling to the pipes, narrowing them and eventually causing a blockage. Use liquid soap as it’s less likely to cause this problem compared to bar soap.

Hair and small objects

Although hair blockages are more common in bathroom sinks, it can also be a problem in the kitchen. Hair from washing hands or even from pets can go down the sink. Small objects like pieces of plastic, tiny bits of packaging, or other debris can also contribute to blockages. Always use a drain cover to catch hair and small objects.

Mineral buildup

In areas with hard water, minerals can build up inside the pipes. These minerals can stick to the sides of the pipes, making the passage narrower over time. This can eventually lead to a blockage. Regularly cleaning your sink and using a water softener can help reduce mineral buildup.

Foreign objects

Sometimes, accidental drops happen. Rings, utensils, or other small items can fall into the sink and get stuck in the pipes. When this happens, it can cause an immediate blockage. Be careful around the sink, and if something does fall in, try to retrieve it before it goes down the drain.

how to fix a blocked kitchen sink

How to deal with blocked kitchen sink?

When your kitchen sink gets blocked, it’s important to deal with it fast to prevent more trouble.

Here’s a simple guide on what to do:

Assess the situation

Before taking any action, assess the severity of the blockage. Determine if the sink is completely blocked or if water is still draining slowly. This will help you decide on the appropriate course of action.

Boiling water

Start with the simplest solution – boiling water. Boil a kettle of water and carefully pour it down the drain in two to three stages, allowing time for the hot water to work on breaking down the blockage between each pour. This method is effective for minor blockages caused by grease or food particles.


If boiling water doesn’t do the trick, try using a plunger. Fill the sink with enough water to cover the plunger head, then place the plunger over the drain and plunge vigorously up and down for about 30 seconds. The pressure created by the plunging action can dislodge the blocked drain and allow water to flow freely again.

Baking soda and vinegar

For stubborn blockages, a combination of baking soda and vinegar can be effective. Start by pouring half a cup of baking soda down the blocked drain, followed by half a cup of vinegar. Allow the mixture to fizz and bubble for about 10-15 minutes, then flush the drain with hot water. This method helps break down organic matter and clear minor blockages.

Plumber’s snake

If the blockage persists, it may be necessary to use a plumber’s snake or drain auger. Insert the snake into the drain and crank it clockwise to break up and dislodge the blockage. Pull out any debris that comes up with the snake, then flush the drain with hot water to clear any remaining residue.

Chemical drain cleaners

Chemical drain cleaners are a last resort and should be used with caution. Follow the manufacturer’s instructions carefully and wear protective gloves and eyewear. Pour the recommended amount of cleaner down the drain, wait for the specified time, then flush the blocked drain with plenty of water. Avoid mixing different types of cleaners as this can create hazardous fumes.

Seek professional help

If all else fails or if you’re uncomfortable attempting DIY methods, it’s best to seek professional help. A licensed plumber will have the expertise to quickly and safely diagnose and resolve the issue. Don’t hesitate to call our plumbers if the blockage is severe or if you suspect there may be a larger underlying problem.

By following these simple steps, you can effectively deal with a blocked kitchen sink and restore proper drainage in your home.

Remember to take preventative measures in the future to avoid recurring blockages, such as regularly cleaning sink drains and disposing of food waste properly.

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