why does my dishwasher backup into my sink

Why Does the Sink Fill Up with Water When I Run My Dishwasher? While it is not the worst plumbing problem you could experience, finding your sink filled with water from the dishwasher is certainly an unpleasant and inconvenient experience. Often times this sort of reoccurring problem can be fixed and prevented with simple cleaning and occasional maintenance. Here is all you need to know to fix and prevent your sink from filling up with water when you run your dishwasher. Before you attempt to clean or fix your current plumbing problems, be sure to unplug your appliances (dishwasher, garbage disposal, etc. ) from their power supply to minimize the risk of electric shock and injury. Turn both the cold and hot water supply valves off to prevent any water flow to your appliances. It is also important to know that the running water in both your kitchen sink and dishwasher flow out through the same drainage line. So any clog or blockage within that main drainage line can cause water to backup and overflow into your kitchen sink. These clogs typically occur in four places: the dishwasher, the garbage disposal, the sink, and the air gap. Clogs in any of these four locations within your plumbing system can result in water filling your sink when you run your dishwasher. In general, a little bit of water in the bottom of your dishwasher is normal and nothing to be concerned about. However, if standing water is covering the bottom of your dishwasher it is clearly not draining correctly. You should then check to see if anything is covering or obstructing the drain in the rear of your dishwasher. You may also want to check the drain hose on your dishwasher as they are known to kink and cause blockages. Additionally, be sure you are using the correct brand and amount of detergent for your dishwasher as it can eventually buildup and result in a clog. Another potential cause is the drain plug on your garbage disposal. The drain plug covers the hole where the garbage disposal is connected to your dishwasher and if left on the garbage disposal it can result in water not properly draining from your dishwasher or sink.


This problem generally occurs when a new garbage disposal is recently installed. Simple remove the drain plug from the garbage disposal to resolve this problem. It is possible that you may have a clog in your sink that is preventing water from your dishwasher to drain properly. You can attempt to resolve this issue in three ways:
It is always recommended that you run your garbage disposal for a couple of seconds before starting your dishwasher to ensure that no food or debris is preventing the proper drainage of water from your dishwasher. To help clear a clog within your sink drain, purchase and use brand name sink cleaners to help breakup any clogs or bacteria buildup. If your garbage disposal or sink cleaners cannot handle the job, you can attempt to clear the drain by purchasing a sink snake from your local hardware store. If none of these solutions unclog your sink it is recommended that you contact a local plumber to resolve the issue. Finally, if you have an air gap installed with your kitchen sink it is possible that the air gap is clogged, preventing your dishwasher from draining and resulting in a full sink of water. The air gap can be found on the top of the sink usually next to your faucet and is used as a backflow prevention device for your dishwasher. If water is flowing from your air gap device there is most likely a clog within the device that needs attending to. To clean and maintain your air gap device, simple remove the top cover and then unscrew or unsnap the inner protective cap to look inside your air gap device. From here, sometimes the debris is visible and easy to remove while other times a more serious blockage may require the use of a twelve inch bottle brush that you can purchase at any local home improvement or hardware store. Use the bottle brush to clean and clear your air gap device of any debris. As an overall maintenance tip for your kitchen plumbing and appliances, do not treat your garbage disposal and sink like a trash can. Knowing what not to put down your sink (bones, rice, pasta, potato peals, etc. ) will help prevent clogs from ever occurring.


Following these repair and maintenance instructions will help ensure you donвt have to deal with messy clogs, unwanted inconveniences, and a dishwasher that overflows into your sink. Keep in mind that the water in your kitchen sink and dishwasher drains flows from the same drainage line. This means that any blockage within the main drainage line in your home can cause water to backup and overflow into your kitchen sink and dishwasher Kitchen sink clogs typically occur in one of four places: the air gap, the dishwasher, the garbage disposal or the sinkвall of which can cause water to backup into your sink when you run your. Read on to learn more about why water from your dishwasher flows into your sink and what you can do to fix the problem today. 1. There s a Block in the Air Gap If you have an air gap installed in your kitchen sink, it may be and causing water to back up into the sink when you run the dishwasher. If you have an air gap, itвs likely located on the top of the sink, next to the faucet to prevent backflow from your dishwasher. But if water is flowing from the air gap, there is probably a clog. Luckily, cleaning out a clog in the air gap is relatively simple. All you need to do is remove the top cover and unscrew or unsnap the inner protective cap. Look inside the air gap for any visible debris. If there is noticeable debris, remove it and replace the cap. More intense clogs may require a bottle brush, but this can be purchased from your local hardware store. 2. There s an Obstruction in Your Dishwasher An obstruction in your dishwasher can cause water to come up through the sink when running the appliance. If you think this is the issue, check to see if there is any standing water in your dishwasher next time you run the appliance. If there is, there is likely a clog or another obstruction in the drain hose of your dishwasher. 3. Your Garbage Disposal Is Clogged or Jammed If water from your dishwasher flows into the sink while running the dishwasher, the culprit could be an unlikely cause: your.


Sometimes, when garbage disposals are, the drain plug cover is accidentally left on. This can cause the water to drain improperly from your dishwasher or sink. If you think this may be the problem, check to see if the drain plug is still intactвif it is, remove it. 4. There s a Clog in the Sink can easily become clogged with food scraps and other debris. A clogged sink can cause your sink to drain slowly, making cleanup all the more annoying, but it can also encourage water backup while running your dishwasher. Run your garbage disposal. Run your garbage disposal for a few seconds before starting your dishwasher. This will help prevent food and other debris from getting stuck. Try a sink cleaner. Quality, brand name sink cleaners can help break up and clogs or debris. Use a drain snake. When sink cleaners canвt remove the clog, a drain snake may help. You can purchase a drain snake for cheap from your local hardware store. Simply place the snake in the drain and snag any debris. For more information, check out our blog: 5. Waste from the Dishwasher Clogs the Garbage Disposal For many years, it was common practice to design dishwashers to drain into the side drain adapter of the garbage disposal. When the water drains from your dishwasher, waste from the dishwasher can block the drain in your garbage disposal. When you turn on the garbage disposal, it grinds the waste, allowing the water to drain freely. This is the way the process was designed to work. If this is your issue, the only fix is to install a new separate trap and drain for the dishwasher. Your dishwasher is the most valuable player in your kitchenвbut when itвs not working correctly, it can make post-dinner cleanup feel impossible. If you have water coming up through your sink when you run the dishwasher, call the at Sansone. Our team will identify the underlying issue and fix the problem fast. Contact us today with any plumbing question or conveniently schedule an appointment by phone or our website. Broward: Palm Beach: В St. Lucie: В

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