Find where and when the water appears
- Disconnect power and close the water supply before inspecting the dishwasher.
- Note whether water appeared while it was off, filling, washing or draining.
- At the door, check detergent, loading and the seal. Under the sink, look at visible supply and drain connections.
- Keep it off until the cause is fixed. Book service for an unexplained leak or suspected internal fault.
A puddle gives you a place to start, but when it appeared helps narrow the check. We'd begin with what you can see without moving the dishwasher: the detergent and door area for a wash-stage leak, or the connections under the sink for water that appeared while it was off or draining.
Before inspecting anything, unplug the dishwasher or turn it off at the breaker, then close its water valve beneath the sink. If water is still escaping, put towels or a shallow tray at the door edge and use a wet/dry vacuum for standing water. Wipe up the rest with towels or a sponge so the floor isn't slippery.
Find your model's use and care guide before making adjustments, because hardware and parts vary. Whirlpool owners can use their model number to find the right instructions (opens in a new tab).
Match the leak pattern to your next check
Use the wet area you've already noticed. Dried water stains on the floor or dishwasher sides can also point to a smaller leak, even when there's no fresh puddle. The pattern tells you where to look next.
| When and where water appears | Possible source | Next safe check |
|---|---|---|
| While the dishwasher is off, near the cabinet | A visible supply connection or shut-off valve; water collecting inside the tub can involve the drain setup | With power and water off, look for dampness at accessible connections under the sink. If water is inside the tub, compare the drain loop or air gap with your installation instructions. |
| During filling, beneath the machine | A supply leak, inlet valve or overfill condition | Check accessible supply connections and whether excess water is collecting in the tub. Leave an internal valve fault to service. |
| During washing, along the door | Excess suds, blocked spray, a dirty or damaged seal, or a door that won't close squarely | Check the detergent and loading, then inspect the seal and latch. |
| During draining, at the sink connection or with water left in the tub | A blocked filter, drain hose, sink connection or air gap | Clean the accessible filter and inspect the drain path under the sink. |
1. Water appears while it's off or filling
With power disconnected and the water supply closed, look under the sink at the visible shut-off valve and supply and drain connections. Dampness at a valve or connection gives you a place to report or repair; if those points are dry, check whether water is collecting inside the tub or coming from beneath the dishwasher.
A worn, cracked or loose supply line or drain tube can leak. Leave panel removal and connection repairs to a service technician. If the tub gains water while the dishwasher is idle, compare the drain installation with your model's instructions: without a high drain loop or air gap, sink water can flow into the dishwasher.
Water that first appears during filling can also point toward the inlet valve or an overfill condition. Check the accessible connections and look for excess water in the tub. If the connections are dry or the tub keeps overfilling, stop there and arrange service.
2. Water reaches the door during washing
Check what went into the detergent dispenser, especially if you saw foam escaping. Use only automatic dishwasher detergent, such as dishwasher pods or powder. Dish soap, hand soap and laundry detergent can produce suds that overflow the machine.
If the wrong soap caused the overflow, turn the dishwasher off, clean up the escaped water and let the suds dissipate. This may take several hours. Pump out the initial water in the tub before using the dishwasher again, and keep it off while foam or leaking remains.
Rearrange overfilled racks and move dishes that block the spray arms. Remove silverware or large food particles caught between the seal and tub. A clear spray path and a door that closes against an unobstructed seal are the results you're looking for. If water still appears at the door after those checks, inspect the seal and latch next.
Check whether the seal is dirty or damaged
Look along the rubber gasket and the tub edge it meets for food residue. Check the rubber for cracks, tears and flattened areas. A dirty gasket can stop the door from sealing properly.
Clean a soiled gasket with mild soap, water and a sponge. The sealing surfaces should be clear afterward. Tears, missing pieces or other damage call for replacement; use your model's instructions to identify the correct gasket and arrange the repair.
If the wet area is concentrated along the bottom of the door, our door-seal checks go deeper into the seal, loading, suds and loose hardware.
Check a door that won't close completely
A loose or bent latch can keep the door from closing and let water escape during washing. With power disconnected, check the latch and anything caught at the seal. A simply loose latch may be tightened with a screwdriver where your model's instructions allow it; a bent or broken latch needs the correct replacement part.
For example, on a Maytag dishwasher an intact but loose gasket can typically be secured back into place. A cracked or damaged gasket needs replacement. The door should close fully against the seal; if it doesn't, use your model's repair instructions or arrange service.
3. Water gathers during draining or inside the tub
A clogged filter can interfere with draining and let the water level rise. On Maytag dishwashers, a small amount of standing water in the filter area is normal; more than an inch may indicate a clog. With power and water still off, follow your model's instructions to remove and rinse the filter, then check the accessible sump for debris. If water remains after the filter is clear, follow the drain path under the sink.
Look for a kink or blockage where the drain hose connects below the sink. If there is an air gap at your sink, check it for trapped material. A clear hose path and air gap should let water drain without overflowing; if standing water still gathers, a drain-line clog or broken drain motor needs a service technician. Our dishwasher drainage checks cover the filter and leftover-water checks in more detail.
A recently installed garbage disposal needs its dishwasher-drain knockout removed before the dishwasher is operated. Have the installer confirm that step if the trouble began after the installation.
On a Maytag installation without an air gap, the drain hose should loop up to touch the underside of the counter. Check its position and the clamp against your model's instructions. Leave connection repairs to a technician.
Check whether the dishwasher sits level
An unlevel dishwasher can let water overflow the tub and escape beneath the door. Keep power disconnected and the water supply closed. On a Maytag dishwasher, check that the cabinet opening is the right size for the appliance before adjusting the legs. Use a level to check side to side and front to back; the door should close squarely when the machine is properly supported.
For a Maytag dishwasher, place the level against the top front opening of the tub. If adjustment is needed, check the leveling details (opens in a new tab) alongside your model's instructions. Adjust the front legs up or down until the dishwasher sits square in the cabinet and flat on the floor, evenly supported by its leveling legs and rear wheels.
If reaching the adjustment requires panel removal, leave that work to a technician. Always reinstall the anti-tip brackets to the counter or side cabinets after adjustments. If the dishwasher is level and water still appears beneath the door, continue with the other leak checks.
Check for water rising too high in the tub
A sticking inlet valve can overfill the tub. With power disconnected and water closed, check whether the float inside the tub moves freely using your model's instructions. Debris can stop its movement; if it moves freely but overfilling continues, schedule service for the suspected valve or another internal fault.
On Maytag dishwashers, water beneath the front center can involve the pump seal, sump or overfill condition. Worn pump, diverter or motor shaft seals can leave water beneath the center or rear. Keep panels in place and leave those parts to a technician.
Water still appears beneath the dishwasher
If the accessible checks leave you with an unexplained leak underneath or on the floor, book an authorized service technician. Keep power disconnected and the water supply closed until the dishwasher is repaired. A suspected failing inlet valve, persistent overfill, cracked tub or worn pump or diverter seal also needs service.
Check your product warranty or service plan before booking. Have the model and serial number ready, and tell the technician where water appeared, when in the cycle it appeared, and which detergent, seal, filter, level and under-sink checks you've already made. On Maytag and Whirlpool dishwashers, the model and serial number are on the tub frame.
Service charges depend on the maker and the repair. As one maker-specific example, Bosch Factory Service lists a $179 call-out fee for a technician's visit. Check the terms for your own model and the quoted diagnostic and repair charges when you book service (opens in a new tab).
A few questions that change the next check
Can a dishwasher leak while it's turned off?
Yes. With power and water off, check the visible shut-off valve and hose connections under the sink for dampness. If water is collecting inside the tub instead, compare the high drain loop or air gap with your installation instructions.
What if a leak warning appears but I can't see a puddle?
Water may be inside a protected part of the machine. On a Bosch dishwasher, an E15 warning means its safety switch detected water in the base. Shut off the water supply and contact Bosch service.
Could a new garbage disposal be involved?
Yes. If draining trouble began after a disposal was installed, have the installer confirm that the dishwasher-drain knockout was removed before you operate the dishwasher.
What if water comes out of the sink air gap?
Check the air gap for accumulated material. Remove what you can access, then replace its plastic cap and chrome cover. If it still overflows, leave the dishwasher off and arrange a drain-path repair.
Why do suds keep coming out of the door?
Check every soap product used in the machine. Hand-washing dish soap, hand soap and laundry detergent can create excess suds. Use only automatic dishwasher detergent after the overflow and remaining suds have been cleared.
More in this category