Dishwasher Leaking? Common Causes and How to Fix

Last Updated on 06/04/2021 by Leona

Have you found your dishwasher leaking and looking for solutions to save your kitchen buddy? Do not panic and call the technician yet, probably it’s time for a thorough inspection and to locate the issue. Most of the common causes of dishwasher leaks can be fixed with simple DIY methods.

No wonder the dishwasher is the hardest working appliance, but we cannot expect it to keep washing dishes every time we push the button. After all, a dishwasher is a machine and problems can occur. Certainly, the dishwasher leakage is a major issue and we all have faced it. I have briefly explained the common causes of a leaking dishwasher and how to fix them.

leaking dishwasher


Important Note: Before starting to inspect an electrical appliance, make sure to unplug the power supply and use gloves. Also, close the water supply valve of the dishwasher. Also, lay down some dry towels under the dishwasher to absorb the water. Now it’s time to read the manual, you can find it in the box or download a .pdf copy from the internet. It is important to have the manual because the little diagrams help a lot to dismantle the parts.

Read detailed article to find the Best Household Gloves.


Dishwasher Leaking: Causes & Solutions

There can be several reasons why your dishwasher is leaking, I have written down a few of them below;

  • The door seal is damaged
  • Clogging in the filter
  • Wrong dishwasher detergent
  • The door latch is faulty
  • Faulty spray arm
  • Dishwasher is unleveled
  • Damaged water inlet valve
  • Fault in the overfill float switch

Now, let’s read about the possible solutions you can do at home to stop a dishwasher from leaking.


Check the Door Seal

dishwasher seal

A leaky gasket is the common cause of a dishwasher leak. Even though you have the Best Dishwasher, the gasket loosens up or gets damaged over time. To inspect the damaged door seal, wide open the door and observe any worn or ripped piece of the seal. If you find any fault in the gasket, I would not advise you to fix it, rather replace the whole gasket.


Order it online from your supplier’s official website or purchase it locally. Before applying, soak it in warm water or blow hot air with the help of a hairdryer to straighten up the folds. After that, simply center the gasket on the door and apply it by pressing even on both sides.



Inspect the Door Latch

faulty door latch

A door latch holds to door tight when it is closed. If there is a fault with the latch, water may seep out from the door and cause the dishwasher leaking. If the door closes too soft, indeed it’s about time to replace the latch. Purchase a specific door latch for your dishwasher model and replace it by following the door latch replacing guide.



Wrong Dishwasher Detergent

If the gasket and door latch is fine but water is still leaking from the door, probably you are using the wrong dishwasher detergent. Either you are using too much detergent or the wrong type, that’s why it is creating too much foam. Access to foam can block the drain holes, as a result, water will leak from the dishwasher door.

We would recommend you to properly clean your dishwasher filter and use less dishwasher detergent.

Read a complete guide on Dishwasher Detergents and find suitable detergent for your dishwasher.


Clogged Filter Causing Dishwasher Leak

leaking dishwasherWater does not drain out adequately if there is clogging in the filter. As a result, a dishwasher does not perform efficiently. Also, the water level rises higher than the required level and it drips out from the dishwasher. The bits of food along with detergent foam make home around the filter. If your dishwasher is leaking because of the clogged filter, you can simply clean it to solve the issue.


Note: It is advised to thoroughly clean your dishwasher once a month. It will prevent a dishwasher from getting damaged too soon and keep the performance efficient.

Read a complete guide about How To Clean A Dishwasher.

Check Faulty Spray Arms

Spray arms spin and spread water on the dishes during the wash and rinse cycles. However, if there is a little fault in the spray arms such as clogging, bend, or loose screws, they will not operate as they are supposed to. Therefore, they will release water on the undesired places. As a result, water may seep out of the dishwasher and cause a leak.

To inspect a faulty spray arm, empty the dishwasher and take out the racks. Now, rotate the spray arms and see if there is an issue with the rotation. If not, observe the holes of the arms from where the water releases and see if they are clogged. To clean clogged spray arms, scrub a mixture of baking soda and white vinegar with the help of a toothbrush. Also, you can simply unscrew them and replace with new spray arms.

clogged spray arm

Faulty Water inlet Valve

inlet valveInlet valve is located at the bottom and it allows water to flow into the dishwasher. If there is a fault in the inlet valve, water will either flow less or more. The less water flow will result in poor performance of the dishwasher. On the other hand, if water flows more, it will cause a dishwasher leakage.

You cannot repair a water inlet valve, it can only be replaced with a new one. Order a new one from the dishwasher manufacturer or buy it from a store, follow the instructions on the manual book to replace it. Remove the kickplate, unplug hoses and clamps, unscrew the valve and make sure to remember all the settings. Simply insert the new inlet valve and place everything as it was before. If you are not good with technical stuff, I would recommend calling a technician to get it replaced.

Dishwasher not cleaning? Follow these Easy Tips to improve performance.


Faulty Overfill Float Switch

A float switch maintains the water at a certain level during the wash cycle. The float rises as the water level rises inside the tub and triggers to switch off the water flow once it reaches desired level. If there is a failure in the float switch, it will not turn off the water after reaching the wanted level and the water will seep out.

To inspect a fault in the float switch, open the dishwasher door in the middle of a wash cycle and observe the water level. If it is above the suitable level, it’s time to repair/replace the float switch. I would recommend consulting the manufacturer or calling a technician to fix the float switch issue.

overflow float switch

Dishwasher Sitting Uneven

An unleveled dishwasher can cause many problems and water leakage is on top of the list. Uneven dishwasher can cause displacement of the float switch and also lead to poor functionality. Hence, water will overflow and drip out from the door.

Read the manufacturer book and set adjust the vertical and horizontal levels accordingly. Use the industrial level for better results. Also, place the level on top of the open door to perfectly align the dishwasher.


Frequently Asked Questions: (FAQs)

What is the most common cause of a dishwasher leaking?

Faulty door seal: the most common cause of a dishwasher leaking is the faulty gasket. The seal wears off or loosens up over time and water drips out from the door. You can easily find it by inspecting the gasket on the door. Also, this dishwasher leaking cause is easy to fix. Purchase a new gasket, dip it in the warm water or blow hot air of the hairdryer to straighten it and apply it with even pressure.


Why is dishwasher leaking at the bottom of the door?

A dishwasher will leak at the bottom of the door if the gasket or the door latch is faulty. Inspect the fault by observing the door seal thoroughly, if you find it worn off or loose, it’s time to replace the seal. On the other hand, the door does not hold tight together and it is because of a faulty door latch. In both of these cases, the dishwasher leaks at the bottom of the door.


Is a leaking dishwasher dangerous?

Yes, a leaking dishwasher is dangerous because someone can slip, fall on the floor and get hurt. Also, it is a hell of a work to wipe out the water from the floor every time you run a dishwasher. At the same time, the water can cause fungus on the floor which is anti-hygienic and dangerous for health.


Why is my dishwasher leaking water on the floor?

Here are some common causes of your dishwasher leaking water on the floor;

  • The door seal is damaged
  • Clogging in the filter
  • Wrong dishwasher detergent
  • The door latch is faulty
  • Faulty spray arm
  • Dishwasher is unleveled
  • Damaged water inlet valve
  • Fault in the overfill float switch


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