{"id":23141,"date":"2024-04-15T12:55:13","date_gmt":"2024-04-15T19:55:13","guid":{"rendered":"https:\/\/kinsta.taskrabbit.com\/blog\/?p=23141"},"modified":"2026-07-27T11:38:36","modified_gmt":"2026-07-27T18:38:36","slug":"why-is-my-dishwasher-not-draining","status":"publish","type":"post","link":"https:\/\/www.taskrabbit.com\/blog\/why-is-my-dishwasher-not-draining\/","title":{"rendered":"Why is My Dishwasher Not Draining? Easy Solutions"},"content":{"rendered":"\n

Nothing can put a damper on doing the dishes quite like opening up your dishwasher after a cycle only to find a tub full of dirty, stagnant water. But don’t panic\u2014a clogged dishwasher is a common problem that’s usually pretty easy for homeowners to fix. The key is figuring out what’s causing the blockage or drainage problems in the first place. Maybe some food scraps have worked their way into the drain, or perhaps you have a faulty drain pump on your hands. Luckily, there are some simple DIY troubleshooting steps\u2014like rinsing the filter or clearing the drain hose\u2014you can take to identify the clog and prevent the purchase of a new dishwasher. Let’s dive in and get to the bottom of this draining dilemma!<\/p>\n\n\n\n

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Why is My Dishwasher Not Draining?<\/h2>\n\n\n\n

1. Blocked Waste Disposal System<\/h3>\n\n\n\n
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Dishwasher won\u2019t drain? If the waste disposal system under your sink is clogged up, it can actually cause some major drainage issues. More specifically: The dishwasher’s drain line is often hooked up to share the same drain as the sink’s waste disposal. So if that disposal system gets backed up with last night\u2019s spaghetti, it creates blockage. When the dishwasher tries to drain out the dirty wash water, it has nowhere to go because of that clogged disposal drain. Instead, the water just gets stuck in the dishwasher tub, leading to a puddle for your dishes to sit in.<\/p>\n\n\n\n

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2. Air Conduit Obstruction<\/h3>\n\n\n\n
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Another culprit behind your dishwasher not draining completely is an obstructed air conduit. What does that mean exactly? Well, your dishwasher has an air conduit, which is a small tube or vent that allows air to flow in and out as the dishwasher drains. But if the conduit is obstructed, it creates a sort of suction that traps the water inside, instead of letting it flow smoothly down the drain.\u00a0<\/p>\n\n\n\n

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3. Misaligned Sink Drain Loop<\/h3>\n\n\n\n
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Your dishwasher’s drain hose is typically connected to the same drain as your kitchen<\/a> sink. Now, that sink drain line is often routed in a looped shape under the cabinet\u2014this is called the “drain loop.” The purpose of this loop is to create a natural trap that prevents dirty sink water and odors from flowing back into your dishwasher. But, if that drain loop gets bumped out of alignment or sags down too much, it can kink the hose and obstruct the flow, causing the water to back up and pool in the dishwasher tub instead of draining properly.<\/p>\n\n\n\n

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4. Incorrect Dishwasher Detergent<\/h3>\n\n\n\n
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Dishwasher detergents are specially formulated to create just the right amount of suds and foam to clean your dishes properly. But the wrong kind of detergent\u2014like using regular hand or dish soap instead of the recommended dishwasher detergent\u2014can lead to an overly sudsy situation.<\/p>\n\n\n\n

All those excess suds get trapped, preventing the water from draining out efficiently after a wash cycle leaving you with a tub full of dirty, sudsy water that just won’t drain.\u00a0<\/p>\n\n\n\n

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5. Drain Basket Food Buildup<\/h3>\n\n\n\n
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Most dishwashers have a small basket or filter located near the drain, designed to catch any leftover gunk as the water drains out. But over time, if that drain basket isn’t cleaned out regularly, the food buildup in there can become a major problem! All those bits of food and grime can end up forming a thick, stubborn clog that completely blocks the dishwasher’s drain so the water has nowhere to go.\u00a0<\/p>\n\n\n\n

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6. Kinked Drain Hose<\/h3>\n\n\n\n
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If your drain hose gets bent at a sharp angle or develops a kink, it creates a serious blockage that stops the water from flowing freely. You know what that means: That backed-up water has nowhere to go and pools in the tub. The good news? A simple straightening out can do the trick but be warned\u2014once a drain hose kinks, it becomes more likely to kink again.<\/p>\n\n\n\n

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7. Blocked Drain Hose\u00a0<\/h3>\n\n\n\n
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Imagine trying to suck a thick milkshake through a straw that’s been stuffed with marshmallows\u2014that’s kind of what’s happening when the dishwasher drain hose gets clogged up. The water just can’t make it through the blockage, so it ends up stuck and stagnating in the dishwasher tub. But breathe easy because unclogging that drain hose is usually a pretty straightforward fix.\u00a0<\/p>\n\n\n\n

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Tools and Supplies to Unclog Dishwasher<\/h2>\n\n\n\n

To unclog your dishwasher, you\u2019ll need the following tools and supplies:<\/p>\n\n\n\n