Dishwasher Water Backing Up Into Sink

There are a few reasons why dishwasher water might be backing up into the sink. One possibility is that the drain hose is clogged. This can happen if food particles or other debris get stuck in the hose and block the flow of water. Another possibility is that the air gap is clogged. The air gap is a small opening in the drain hose that allows air to enter the system and helps to prevent water from siphoning back into the sink. If the air gap is clogged, water can back up into the sink when the dishwasher is draining.

If the drain hose or air gap is clogged, you can try to clean them yourself. To clean the drain hose, disconnect it from the dishwasher and the sink and flush it out with hot water. To clean the air gap, remove the cap and clean out any debris that may be blocking it. If you are not comfortable cleaning the drain hose or air gap yourself, you can call a plumber to do it for you.

Another possible cause of dishwasher water backing up into the sink is a faulty dishwasher drain pump. The drain pump is responsible for pumping the water out of the dishwasher. If the drain pump is not working properly, water can back up into the sink. To check the drain pump, listen for a humming noise when the dishwasher is draining. If you do not hear a humming noise, the drain pump may be faulty and will need to be replaced.

If you have tried cleaning the drain hose, air gap, and drain pump and the dishwasher water is still backing up into the sink, there may be a more serious problem with the dishwasher. In this case, you will need to call a plumber to diagnose and repair the problem.

### Tips to Prevent Dishwasher Water from Backing Up Into Sink

Here are a few tips to help prevent dishwasher water from backing up into the sink: