Dishwasher Leaking? Here's What to Do.
Water from a leaking dishwasher can spread underneath cabinets and flooring before you notice it. Learn what to do first, common reasons dishwashers leak, where hidden water may travel, and when a small appliance problem becomes a water-damage problem.
Water Damage Cleanup Guide →Stop the dishwasher and additional water flow when it can be done safely. Remove visible water, then determine where the leak originated and whether moisture traveled underneath flooring, cabinets, baseboards, drywall, or into the room below. Fixing the dishwasher does not automatically address water that has already entered building materials.
Stop the leak, then follow the water
A puddle in front of a dishwasher may be obvious. Water underneath the dishwasher or behind adjacent cabinets can be much easier to miss.
Depending on the failure, water may escape from the door, supply connection, drain system, pump, hose, seal, or another internal component.
Once the water source is controlled, focus on how far the water traveled—not just whether the kitchen floor looks dry.
Why is your dishwasher leaking?
Where the water appears and when the leak occurs can help narrow down possible causes.
Door Seal or Gasket
A damaged, dirty, displaced, or deteriorated door seal can allow water to escape around the dishwasher door.
Water Supply Connection
The dishwasher's supply line, valve, fittings, or connections can leak underneath the appliance or inside a nearby cabinet.
Drain Hose
A damaged, loose, blocked, or disconnected drain hose can release water during the dishwasher's drain cycle.
Pump or Internal Leak
Pumps, seals, internal hoses, valves, and other dishwasher components can leak underneath the unit.
Installation or Leveling
Installation, alignment, or leveling issues can sometimes contribute to water escaping from the dishwasher.
Excess Suds or Overflow
Excessive sudsing or another operating problem can cause water or foam to escape from the appliance.
Where is the dishwasher leaking from?
Dishwasher Leaking From the Bottom
Water underneath the unit can come from a pump, seal, hose, supply connection, drain component, or another internal source. Water from elsewhere can also travel underneath the appliance.
Dishwasher Leaking From the Door
Door seals, alignment, debris, excess suds, spray patterns, or other operating conditions may contribute to water escaping around the door.
Water Under the Sink
Dishwasher supply and drain connections often interact with plumbing beneath the kitchen sink. A leak there may initially look like a dishwasher problem—or vice versa.
Leaks During the Drain Cycle
If water appears primarily when the dishwasher drains, investigate the drain hose, connections, pump, and related drainage components.
Dishwasher flooded the kitchen? Follow these steps.
Stop the Dishwasher
Stop the cycle if the dishwasher is still running and releasing water.
Stop More Water
If the dishwasher's water supply can be safely shut off, stopping additional flow can limit further damage.
Consider Electrical Safety
Avoid unsafe contact with electrical equipment when standing water or wet electrical components may be present.
Remove Visible Water
Once conditions are safe, remove standing water and wet contents rather than allowing water to remain in the kitchen.
Check Hidden Areas
Inspect around toe kicks, cabinets, baseboards, flooring edges, walls, and the ceiling below if the kitchen is upstairs.
Dry Before Rebuilding
Address wet building materials before replacing trim, flooring, cabinets, drywall, or other finishes.
Where does water from a dishwasher leak go?
Kitchen construction can hide water surprisingly well. Dishwashers are commonly installed between cabinets, and finished flooring may not extend uniformly beneath every cabinet or appliance.
Water can move through seams and gaps, underneath flooring, beneath cabinets, behind toe kicks, into drywall, and around plumbing penetrations.
A leak may therefore affect a larger area than the visible puddle suggests.
Check adjoining rooms too
Water does not necessarily remain inside the kitchen. Check the opposite side of nearby walls and, when applicable, the room or ceiling below.
Signs water spread beyond the dishwasher
What if dishwasher water got under the kitchen floor?
The appropriate response depends on the amount of water, flooring material, installation method, subfloor, and how long moisture remained.
Water may affect hardwood, laminate, vinyl plank, tile assemblies, underlayment, adhesive, and subflooring differently.
Do not assume everything underneath is dry simply because the exposed surface no longer feels wet.
Read our complete Water Under Flooring Guide.
What about electricity and a leaking dishwasher?
A dishwasher uses both water and electrical power. A significant leak can therefore create conditions where electrical safety needs to be considered before cleanup or appliance inspection.
Avoid standing in water while attempting to reach electrical plugs, outlets, wiring, appliances, or electrical equipment.
If water may have reached electrical components and you cannot safely control the situation, stay away from the affected area and obtain appropriate professional help.
How do you dry water damage from a dishwasher?
Begin by controlling the source and removing standing water once the area is safe.
The rest depends on what became wet. Water limited to an exposed, water-resistant surface presents a different situation from water trapped beneath flooring or cabinets.
Drying can involve water removal, controlled air movement, dehumidification, access to concealed wet areas, and moisture monitoring.
Cabinets can complicate drying
Cabinet bases, toe kicks, walls, and flooring can restrict access to moisture. Some materials may also absorb water and deteriorate.
Can a dishwasher leak cause mold?
Persistent moisture can create conditions that support mold growth, particularly when water becomes trapped beneath cabinets, flooring, drywall, wood, or other moisture-sensitive materials.
The priority after a leak is to stop the source and address wet materials rather than waiting for visible growth to appear.
Learn more in our Mold After Water Damage Guide.
Does homeowners insurance cover dishwasher water damage?
Coverage depends on the cause and circumstances of the loss and the terms of the policy. The appliance itself and resulting property damage may also involve different coverage questions.
Photograph the Damage
Document visible water, flooring, cabinets, walls, contents, the dishwasher area, and other affected locations when safe.
Document the Cause
Keep information about the failed line, hose, connection, component, or other suspected cause of the leak.
Keep Your Records
Save relevant photographs, invoices, estimates, receipts, and communications related to mitigation and repairs.
For a broader explanation, read Does Homeowners Insurance Cover Water Damage? →
Dishwasher leak FAQ
What should I do first if my dishwasher is leaking?
Stop the dishwasher and additional water when it can be done safely. Then remove visible water and determine whether moisture spread beneath flooring, cabinets, walls, or into the level below.
Why is my dishwasher leaking from underneath?
Possible sources include the supply connection, drain hose, pump, seals, internal hoses, valves, or another dishwasher component.
Why is my dishwasher leaking from the door?
A door seal or gasket, alignment problem, debris, excess suds, or another operating issue may allow water to escape around the door.
Why does my dishwasher leak only when draining?
The drain hose, pump, drainage connections, or related components become especially relevant when the leak occurs during the drain cycle.
Can dishwasher water get underneath kitchen cabinets?
Yes. Water can travel beneath toe kicks, cabinet bases, flooring, and through gaps or penetrations around the dishwasher.
What happens if dishwasher water gets under the floor?
Depending on the flooring system, moisture may affect flooring, underlayment, adhesive, or the subfloor even after the visible surface has been dried.
Can a dishwasher leak cause mold?
Persistent moisture can create conditions that support mold growth, particularly in concealed areas beneath cabinets, flooring, or walls.
Does a dishwasher leak require water-damage restoration?
Not every leak does. A small surface leak may be manageable without extensive restoration, while water that reaches concealed or moisture-sensitive materials may require more extensive drying and cleanup.
Does homeowners insurance cover water damage from a dishwasher?
Coverage depends on the cause, circumstances, and policy terms. Sudden damage and long-term leakage can raise different coverage issues.
Who should I call for a leaking dishwasher?
Appliance repair may be appropriate for a dishwasher failure, a plumber may be needed for supply or drainage problems, and a water-damage restoration company may be appropriate when building materials require moisture evaluation, drying, or cleanup.
Follow the water through the kitchen
Dishwasher fixed—but is the kitchen dry?
If water reached flooring, cabinets, drywall, or another concealed area, repairing the appliance may solve the source without addressing moisture already inside the structure.