Easy — no tools neededLow safety risk

Why Is There Water at the Bottom of My Dishwasher?

Updated July 2, 20263 min readTime needed: 15–30 minutes

Short answer: A shallow puddle around the drain area is normal — it keeps the pump seal wet. Standing water that covers the bottom rack floor almost always means the filter, drain hose, or air gap is clogged.

Common Symptoms

Water visibly pooling across the entire dishwasher floor after a cycle
Dishes come out with a film or haven't been properly cleaned
A musty smell coming from the machine
Gurgling sounds from the kitchen sink during the dishwasher's drain stage

Likely Causes

1. Clogged bottom filter

Food particles collect in the removable filter assembly at the bottom of the tub, restricting how much water the pump can clear.

2. Kinked or clogged drain hose

The corrugated hose running to the garbage disposal or drain line can trap food debris or get pinched behind the cabinet.

3. Blocked air gap or disposal knockout plug

If connected through an air gap or garbage disposal, a missed knockout plug or clogged air gap can prevent proper drainage.

4. Worn drain valve or failed pump

Over time the drain valve or pump motor can wear out and stop clearing water efficiently even when the path is clear.

Safe Checks You Can Do

Remove the bottom rack and check the filter assembly for trapped food debris.
Run the garbage disposal (if connected) to clear any blockage in the shared drain line.
Look for a kink in the drain hose where it connects behind the dishwasher or under the sink.
Check that the air gap on the counter (the small cylindrical fitting near the faucet, if present) isn't clogged.

Step-by-Step Solution

1
Remove standing water
Scoop or sponge out any standing water before working on the filter, so you can see what you're doing.
2
Clean the filter assembly
Twist and lift out the cylindrical filter (check your manual for the release mechanism), rinse it under running water, and clear any trapped debris.
3
Check and clear the drain hose
With the dishwasher pulled out slightly, inspect the hose for kinks and straighten it. If accessible, disconnect and flush it with water over a sink.
4
Clear the air gap or run the disposal
Remove the air gap cover and clear debris, or run the garbage disposal for 10–15 seconds to clear the shared line.
5
Run a rinse cycle to confirm
Reassemble everything and run a short rinse-only cycle to check that water clears completely.

What Not to Do

Don't run a new wash cycle with standing water already in the tub — it can overflow onto the kitchen floor.
Don't pour bleach or drain cleaner into the tub to try to clear it — these chemicals aren't designed for dishwasher components.
Don't ignore a persistently musty smell — it's often linked to the same debris causing the drainage issue.

When to Call a Professional

Water remains after cleaning the filter, hose, and air gap — this suggests a failed drain pump or valve.
The dishwasher makes a loud grinding noise during the drain stage.
You notice water leaking onto the kitchen floor in addition to pooling inside.
The unit is more than 10 years old and this is a recurring issue — replacement may be more cost-effective than repeated repairs.

Safety warning

Always disconnect power at the wall before removing hoses or reaching into the drain pump area, and be cautious of any broken glass or sharp debris that may be trapped in the filter.

Frequently Asked Questions

Is a small amount of water at the bottom of a dishwasher normal?

Yes — a shallow layer around the drain sump keeps the pump seal from drying out. Problems start when water covers the whole tub floor or doesn't recede between cycles.

Can I use my dishwasher while there's water at the bottom?

It's best to clear it first. Running a cycle with existing standing water increases the risk of overflow, especially if the blockage is still in place.

How often should I clean the dishwasher filter?

Once a month for average use is a good baseline, more often if you often skip scraping plates before loading.

Home Solutions Editorial Team

Reviewed against manufacturer documentation. Updated July 2, 2026. How we write guides

Appliances