Having a water leak from your dishwasher can become more than just a minor inconvenience and might even lead to other costly damage. To prevent this from happening to you or help you troubleshoot it, here are some common reasons that your dishwasher is leaking:
Defective Gasket
A defective gasket is one of the most common causes of a leaking dishwasher. The gasket runs along the perimeter of the machine’s door to create a watertight seal when the door is shut.
However, when the gasket gets damaged, dirty, or loose, it won’t seal correctly. This can result in water escaping from the dishwasher door during rinse cycles.
To check the gasket, open the appliance door and look for cracks, holes, or dirt. If it’s damaged or loose, you’ll have to replace it. If there’s just dirt buildup, you can clean it with a cloth.
Damaged Water Pump System
You may have a problem with the water pump system if your dishwasher is dripping. It’s in charge of two things: delivering water to the wash cycle and emptying water out of the drain.
If your water pump system is damaged, this could cause water at the bottom of your appliance to build up.
This system also consists of hoses and clamps on those hoses to carry and drain water from the dishwasher. If these break or wear out, your machine will leak water down the sides and out of the bottom. Source: Mr Appliance
Missing High Loop or Air Gap on the Drain Hose
A dishwasher drain hose should not run flat from the dishwasher to the sink drain.
It needs either a high loop or an air gap, depending on the appliance instructions and local plumbing requirements. The goal is simple: dirty sink water should not be able to flow backward into the dishwasher.
The Uniform Plumbing Code addresses dishwasher drainage through UPC 807.4, which covers domestic dishwashing machine drain connections. Many manufacturer installation guides also require the drain hose to be elevated before it connects to the disposal or drain tailpiece.
Without that protection, water from the sink, disposal, or drain line can siphon back into the dishwasher. That can cause standing water, odors, poor draining, overfilling symptoms, and leaks that appear random.
Dishwasher Is Not Level
Leveling is not just about making the dishwasher look straight in the cabinet.
The dishwasher tub, door, gasket, racks, spray arms, and water level all depend on the unit sitting correctly. If the machine leans forward, water can collect near the door instead of staying where the manufacturer intended. If it leans to one side, the door may not compress the gasket evenly.
That small difference matters. Dishwashers do not use a deep tub of water like a washing machine. They spray water at high speed inside a shallow sealed cabinet. If the tub is twisted or tilted, water can hit the wrong place and escape through the front. Source: IV Appliance Clinic
Cracked Dishwasher Tub
Finally, a cracked dishwasher tub can cause water to leak out of the machine. This can happen if heavy items are placed on top of the dishwasher, causing the tub to crack.
To check for a cracked dishwasher tub, inspect the interior of the machine for any signs of damage or cracks. If you notice any issues, it may be time to replace the dishwasher. Source: Green Planet Plumbing
We hope that this article has provided you with more awareness the next time you encounter some water leaking from your dishwasher. If ever you need help fixing it, then we are always willing to lend a hand. Just give us a call and we’ll be there as soon as we can!