What to Do if Water Keeps Coming Back Up The Kitchen Sink?

What to Do if Water Keeps Coming Back Up The Kitchen Sink?

Sink problem is a typical household situation when your kitchen sink does not drain properly, the water backs up and you end up in the situation of having a full sink of water. If you face the situation that sink backs up, continue reading the article to know how to deal with this problem.


Although, it is a pretty undesirable situation, let’s admit it, it happened to everyone at least once. Your first reaction would be to call a plumber, however, hold on there. We have a better suggestion. You don’t really have to call a plumber to clean your kitchen sink pipes and drainage. Most of these issues are usually very easy to resolve. In this article, we are going to teach you all the tricks on how to deal with sink problems. You will be able to fix it yourself, provided you read carefully and follow all the steps.


First of all, there is always a reason for water backing up in sink. Water coming up back up the kitchen sink drain is an indicator of some minor problems. When you see sink backing up, most probably there are some issues with the drainage. So unless you clear out the drainage, you will not be able to get rid of all sink water. The first immediate action, that you have to take in this situation is to unclog the sink and make sure that the water is flowing down the drain again.


Step 1: Plunge the Blockage

 The easiest way to deal with the clogged sink is to use the plunger. Similarly, like you use the plunger when your toilet is blocked, use the plunger in your sink. A kitchen sink plunger is also a great tool for evaluating how clogged is your drainage system. If the plunger will work on your sink, and your kitchen sink backing up will stop, it means that the extent of the issues was not that big. However, do not get too excited, because in some cases plunger can not be enough to deal with the clogged drainage.

slow draining kitchen sink


How to use the kitchen sink plunger?

Plunger can be designed for toilet and bathroom/kitchen sinks. Do make sure you are using the kitchen sink plunger.

  1. Place the plunger cup over the sink drain opening. Make sure to cover the opening fully. You should leave a small amount of water in the sink while using the plunger.
  2. Start pumping the plunger in an up and down motion direction. While doing this, you should feel the suction around the area between the plunger and the sink.
  3. Continue to push for about 6 to 10 times, then put the plunger away and see if the water starts to drain. If you see the water started to drain than it means you successfully unblocked your sink.
  4. Flush the drain by opening and running hot water for about 2-3 minutes.

In case you did not succeed to open the drainage with the plunger, it means that the clog is deeper in the pipe and requires more serious actions.

You can read our article: How to Unclog a Double Kitchen Sink with Standing water?

Here is a very helpful video on YouTube:

Alternative ways to unclog kitchen sink drain

 Use Boiling water

 Using hot boiling water is the cheapest and probably the easiest solution that exists. If you have any standing sink water, attempt to remove it first. You can use a mug to take the water out. Once the water has boiled, slowly pour all the water into the sink opening. Wait for some time, until the water cools off then you have to remove it and try the same process again. It might take you several efforts in order to remove the clog.

Although it is a very easy and cheap solution, it does not work all the time. Your clog might be related to garbage disposal.

Check Garbage Disposal

garbage disposal water comes back up

If the garbage disposal is backing up into sink, you know that the clog is due to the garbage disposal. To investigate if the garbage disposal is backing up and is clogged, simply turn it on and see if the blockage will go away. Keep in mind that the disposal can be overheated. In this case, you want to make sure to switch it off first, let it cool off, reset it and then turn it again on to see if this time it helps to get rid of the clog. In the event of hearing the humming sound, we advise you to switch off the disposal to prevent it from getting broken. Never attempt to fix the garbage disposal system unless you switched it off completely. But even if you are sure you switched it off, don’t stick your finger into it. Try using some pipe wires instead. Use Allen wrench to move the blades (clockwise). When you feel like the resistance is less, that would be an indicator the blockage is breaking apart. Turn on the disposal again. If you see the water starting to drain than it was your garbage disposal backing up and causing a particular problem.

Use vinegar and baking soda

kitchen sink drain repair

This method is also relatively cheap and easy, especially, since you are able to find these 2 items at your kitchen or next-door supermarket. Before attempting to use the mix of vinegar and baking soda, you need to remove the sink water that backed up earlier (same as the method of using hot water). Pour a cup of baking soda, following with a cup of vinegar down the sink drain. Alternatively, you can mix baking soda and vinegar in the cup and then pour this mix into the sink drain opening. Put the stopper, because the mix will bubble. Leave it there for 20 minutes. Open and run the hot water, to see if the water drains. If it does, it means you managed to unblock the sink.

Check the P-trap

The P-Trap is the curved part pipe below your sink. P-trap can be the number one reason for a clog to occur, especially if you don’t flush your disposals with water properly. Once they reach the P-trap and they are not flushed with the water they can accumulate there, making the water drainage slow. To check the P-trap, you will need first to take the bucket and place it below the sink, so once you open it, all the water and garbage goes into a bucket. Remove the 2 coupling nuts (use pliers in this case). Then take the pipe wire of bottle brush and attempt to brush the debris out of the pipe. In case the P-Trap is clean then you will need to use the Plumber’s snake tool. Move to the next step, to find out about it.


kitchen sink pipe

Use Plumber’s Snake tool

The plumber’s snake helps you to pull out the debris from the drainage pipe. In case you do not have this particular tool, use pipe wire, or used straightened hanger. Plumber’s snake is often used when the clog is hard to get out and the place of it is hard to reach. Be extra gentle and don’t push too hard, not to scratch your sink. Once you attempted to pull out all the debris, you will need to do again step with pouring hot water.

fix sink drain

kitchen drainage

Use drain granules or special drain solution

Find in the nearest store special drain solution and granules and follow the instructions to unblock the sink. Typically you will need to pour some amount of the substance (250ml) into the sink, followed by pouring hot water. Leave it for some time (per instruction). Run the water to check if the blockage is out. Some solutions might be harsher and will work quickly, some of the take-ups longer, but all of the more or less deal with the medium blockage of the sink.


How to prevent future clogs from happening?

Without enough water, the waste can’t be flushed through the pipelines and will quickly construct up. When a complete blockage takes location, water can’t flow at all.

Refrain from:

  • Grinding up eggshells or coffee premises: These items are a larger issue than you might imagine. When ground up by disposal, eggshells and coffee premises develop actually tiny granular waste that will adhere to any sludge discovered in the pipes, quickly becoming an obstruction.
  • Grinding potato peels: As soon as ground up, they form a starchy paste similar to mashed potatoes that will quickly block the drain.
  • Grinding banana peels: These are a comparable problem to potato peels, other than they also include stringy fibers to the mix.

Since the kitchen sink is used on a daily basis, you want to make sure that you run boiling or hot water from time to time to make sure that no clogs are forming up. Also if you are washing the plates and small pieces of food are disposed into a sink make sure you flush them off with a good amount of water.

Additionally, make sure your garbage disposal is running and working properly. Although the garbage disposal system was designed to dispose of waste, it does not mean you can dispose of anything into it. Don’t overuse it.

Another advice would be- to remove the food disposals before you attempt to wash the dishes. It is a small action, but believe me, it will save you from headaches in the future. Remember, the clog does not really happen overnight. It takes time, for the debris and food disposals to accumulate. The easiest way to prevent this accumulation is to maintain your sink drainage system. Use the trick of pouring the boiling water into the sink from time to time and you will forget about the clogs!


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