Why Does My Dishwasher Keeps Backing Up Into The Sink?


No one wants to deal with plumbing issues, but they happen, which is why it’s important to know what to do when plumbing problems arise.

If you’re currently dealing with your dishwasher backing up into the sink, you’re in luck — well, sort of. On the brightside, this is one of the better plumbing problems to have and can typically be fixed with a little DIY magic and plumbing know-how.

Read on to learn the most common reasons why this occurs and what you can do about it here.

Top 4 Reasons Dishwashers Back Up Into The Sink

1. There’s an obstruction in the dishwasher
Sometimes, a bit of pooling water at the bottom of your dishwasher is totally normal, but there shouldn’t be a significant amount of water. If there is, there’s likely an obstruction in the dishwasher which is causing the appliance to back up into the sink.

If you notice there’s a significant amount of standing water in the bottom of your dishwasher, check to see if anything is obstructing the drain in the back of the appliance.

It’s also a good idea to check the drain hose on the dishwasher since there are prone to kinking which can cause blockages.

2. The garbage disposal is jammed
The drain plug covers the hole where the garbage disposal connects to the dishwasher. But if the drain plug is left on, it can result in water improperly draining from the appliance.

This typically occurs when a new garbage disposal is installed. Check to see if the drain plug has been left on. If it has, simply remove it and your appliance should drain normally.

3. The sink is clogged
A simple sink clog can prevent water from draining properly and result in water backing up when you run your dishwasher.

Drain clogs tend to be easy to remove by either running the garbage disposal, using commercial sink cleaners, or snaking the drain if the clog is more intense.

4. The air gap is blocked
Not all kitchen sinks have an air gap installed, but if yours does, it may be blocked. Blockage in the air gap can prevent the dishwasher from draining, which will cause water to back up into the sink when the dishwasher is running.

The air gap is located on the top of the skin, typically next to the faucet. If you see water flowing from the air gap, there’s most likely a clog. All you have to do to clear a clog is remove the top cover, unscrew and unsnap the inner protective cap, and remove any visible debris.

Contact Climate Design Today for Plumbing Repair Service In Clearwater, FL

If water is backing up into your dishwasher and you need a repair now, our team wants to help. At Climate Design, we offer comprehensive plumbing services to the Tampa Bay area and beyond. With the top service technicians in the area, we’re ready to help put an end to your plumbing woes.

Contact us today for all of your AC needs in the Tampa area.