Water on the kitchen floor is urgent: it’s both a slip hazard and a shock risk near outlets. Where the puddle actually forms tells you almost everything you need to know before you open a single panel, so start by localizing it rather than guessing at a part.
This page is part of our full dishwasher troubleshooting guide. A dishwasher that’s both leaking and not draining properly often shares a cause, so check our not draining guide as well.
Quick Diagnosis Table
| Cause | Likelihood | Difficulty | Typical Part Cost |
|---|---|---|---|
| Worn or dirty door gasket | Very likely | Easy | $15–35 |
| Oversudsing (wrong detergent) | Likely | Easy | $0 |
| Loose or cracked hose connection | Likely | Easy–Moderate | $10–25 |
| Unit not level | Possible | Easy | $0 |
| Worn pump seal | Possible | Professional recommended | $30–90 |
| Cracked tub or sump | Rare | Professional recommended | Often not economical to repair |
Repair or Replace?
A gasket, hose, or leveling fix costs little and is worth doing regardless of the appliance’s age. A pump seal replacement is a fair repair on a unit under 8 years old but usually calls for a professional. A cracked tub, by contrast, is rarely worth repairing on any dishwasher. At that point, replacement is almost always the more sensible option.
Gasket shape and hose routing differ across Whirlpool, GE, Samsung, LG, Bosch, KitchenAid, Frigidaire, and Maytag. If your dishwasher is showing a code alongside the leak, see Bosch E15, Samsung LE, LG AE/E1, or KitchenAid F8E4.
Frequently Asked Questions
Is it safe to run my dishwasher if it's leaking a little?
No — stop using it until you've found the source. Even a small leak near the base can reach electrical components, and oversudsing leaks tend to get worse with each cycle.
Why does my dishwasher only leak sometimes?
Intermittent leaks often point to detergent amount (oversudsing depends on load and water hardness) or a gasket that only fails to seal when the door is closed at a slightly different angle — check your loading habits and door alignment.
Can a dishwasher leak cause damage to my floor or cabinets?
Yes, and quickly — water under a dishwasher can warp subflooring and cabinet bases within days, which is why locating and stopping a leak promptly matters more than most other dishwasher issues.
How do I know if it's the pump seal versus the drain hose?
Pump seal leaks appear centered directly under the tub itself, while hose leaks trace back to a specific fitting or a visible crack along the hose length — a flashlight inspection during a running cycle usually distinguishes the two.
Do all dishwashers need to be perfectly level?
Yes, within about 1 degree in each direction. Most manufacturers specify this in the installation manual because it affects both drainage and door sealing, not just cleaning performance.
The information provided here is a diagnostic aid and does not replace the intervention of a qualified professional.
