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Dishwasher Not Draining? Easy Fixes and Repair Help
Most dishwashers that leave water in the bottom have a clogged filter, a kinked drain hose, or a blocked disposal or air gap. If those are clear, the drain pump may have failed.
Safety first: unplug the appliance or switch off its breaker before touching anything inside, and shut off the water or gas supply where it applies. If you smell gas, leave the house and call your gas utility from outside.
Likely causes
- Clogged filter at the bottom of the tub
- Kinked or clogged drain hose under the sink
- Garbage disposal knockout plug never removed after a new install, or a clogged disposal
- Clogged air gap on the sink (if you have one)
- Failed or jammed drain pump
- Clogged kitchen sink drain
Safe owner checks
- Turn off power to the dishwasher. Scoop or sponge out the standing water.
- Remove and clean the filter. Many models twist out from the bottom of the tub.
- Run the garbage disposal to clear it, since many dishwashers drain through it.
- If the disposal is new, check that the knockout plug was removed.
- Check the drain hose under the sink for kinks.
- If you have a small air gap cap on the sink, pop it off and clear debris.
When to call a pro
- The filter, disposal and hose are clear and water still stands
- You hear humming with no water moving
- Water is backing up into the sink or leaking
- An error code keeps showing
Repair or replace?
Filters, hoses and drain pumps are common fixes. On an older, low-cost dishwasher with other problems, replacing can make more sense.
Repair cost
Call for a quote. Costs depend on the brand, the model, the part and the shop. Ask for any diagnostic or trip fee and a written quote after diagnosis.
Local facts
Where to take an old appliance, rebates, licensing rules and local shops differ by state and city. Each Local Help Stations state site keeps those facts on its own pages, with official sources.
Other dishwasher guides
FAQ
Why is there water in the bottom of my dishwasher?
A clogged filter, kinked drain hose, blocked disposal or air gap, or a failed drain pump.
How often should I clean the dishwasher filter?
Check your manual. Many manufacturers suggest about once a month, more often if you do not rinse dishes.
Can hard water affect my dishwasher?
Hard water leaves mineral buildup that can clog spray arms and leave film, so use a rinse aid and occasional cleaner.
Last checked: . Written by Local Help Stations.