It’s common to open a dishwasher and find water sitting at the bottom after a cycle. In most cases, this doesn’t mean the machine is broken. The issue is usually caused by a blocked filter, a clogged drain hose, or food debris buildup.
While standing water can be frustrating, it’s often simple to fix.
The Most Common Reasons This Happens
1. A Blocked Filter
The most common cause of drainage problems is a clogged filter. Food particles, grease, and debris can accumulate over time and restrict water flow.
Regular cleaning helps prevent this issue.
2. A Clogged Drain Hose
If the drain hose becomes blocked or kinked, water cannot exit the machine properly. This may leave a pool of water at the bottom after each cycle.
3. Food Debris Buildup
Small pieces of food can collect in the pump area or internal components. Over time, this can slow drainage and leave residual water.
4. Drain Pump Issues
In less common cases, the drain pump may be worn or obstructed. If you also hear unusual grinding or humming noises, see Why Is My Dishwasher Making Noise? (future link once live)
5. Incorrect Installation
If the drain hose isn’t installed at the correct height, water may flow back into the machine after draining.
Is This Normal?
A small amount of water near the filter is normal.
It may be normal if:
• Only a small puddle remains
• The dishwasher otherwise runs normally
• The water drains during the next cycle
It may not be normal if:
• A large amount of water stays every time
• Dishes remain dirty
• The machine stops mid-cycle
When Should You Worry?
You should investigate further if:
• The dishwasher repeatedly fails to drain
• Error codes appear
• Water leaks onto the floor
• Grinding noises continue
Persistent drainage problems may indicate pump or hose issues.
What You Can Do
If your dishwasher isn’t draining, you can:
• Turn off and unplug the machine
• Remove and clean the filter
• Check the drain hose for kinks
• Run a short test cycle
• Monitor for recurring issues
If drainage doesn’t improve, professional inspection may be required.
In most situations, a dishwasher that isn’t draining is blocked rather than broken. Cleaning the filter and checking the hose often restores proper operation. If the issue persists, a technician can diagnose the cause.
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