Your dishwasher is supposed to make life easier—not leave a puddle on the floor. When a dishwasher starts leaking, even a small drip can turn into a major problem if it’s not addressed quickly. From water damage to hidden mold growth, a leak is more than just an inconvenience. Here’s what every homeowner in Morris County should know.

How Dishwasher Leaks Can Damage Your Home
A leaking dishwasher can create costly problems fast. Water that seeps under your kitchen flooring can soften subfloors, warp hardwood, and cause tiles to loosen. Over time, moisture can also affect nearby cabinets, drywall, and even structural framing.
One of the biggest concerns is mold. Dishwashers often leak slowly and silently, especially if the water escapes toward the back of the unit. That trapped moisture becomes the perfect breeding ground for mildew and mold—something no homeowner wants in their kitchen. Mold remediation gets expensive quickly, which is why early detection is crucial.
Common Causes of Dishwasher Leaks
Several issues can cause a dishwasher to leak, including:
- Worn door gaskets: The rubber seal around the door loses elasticity over time.
- Loose or cracked hoses: Drain and supply lines can degrade or loosen at their connections.
- Faulty float switch: If the float gets stuck, the dishwasher may overfill.
- Damaged tub: Older units may develop cracks, especially plastic-bottom models.
- Improper loading: Overstuffing or blocking the spray arms can push water out the door.
DIY Troubleshooting Tips
Before calling for service, there are a few simple things you can check:
- Inspect the door gasket for tears, grime buildup, or brittleness.
- Make sure your dishwasher is level—an uneven appliance can cause water to spill forward.
- Check the bottom of the unit for debris blocking the drain.
- Look under the sink to ensure the hose connections haven’t loosened.
If you spot a simple clog or an obvious loose connection, you may be able to tighten or clean the area yourself. However, if the leak continues, don’t ignore it—persistent leaking always requires a professional inspection.
When to Call a Professional
If the leak is coming from inside the unit, the pump area, the tub, or any electrical components, it’s time to call in an expert. Leaks involving internal parts can worsen quickly and aren’t safe to repair without proper training. A professional technician can diagnose the source, replace worn components, and ensure your dishwasher is running safely again.
At Morris County Appliance Repair, we’ve been helping local homeowners protect their kitchens since 1962. Whether your dishwasher needs a minor adjustment or a major repair, our licensed and insured technicians are here to help. We also offer appliance parts sales if you prefer to handle certain fixes yourself.
If your dishwasher is leaking, don’t wait—water damage doesn’t get better on its own. Call us today for fast, reliable service throughout Morris County.











