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Dishwasher Leaking? Basic Checks Guide

Try these simple steps to identify common sources of dishwasher leaks.

Before You Call: Simple Dishwasher Leak Checks

Finding water pooling around your dishwasher requires quick action. Before calling for service, perform these basic checks focusing on the door seal, detergent use, and visible hose connections.
Important: This guide covers checking external factors and visible connections. It does not cover diagnosing or repairing internal leaks from pumps, tubs, or valves.

⚠️ SAFETY FIRST! READ BEFORE PROCEEDING! ⚠️

ALWAYS turn off the power to the dishwasher at the circuit breaker and turn off the water supply valve (usually under the sink) before inspecting hoses or pulling the unit out.
Have towels ready to clean up any spills immediately.
Be aware of potential electrical hazards if water has leaked near electrical components.
If you are unsure or uncomfortable performing any step, STOP and contact a qualified professional.

Step-by-Step Basic Leak Checks

  1. Check Door Gasket / Seal

    Open the dishwasher door and carefully inspect the rubber gasket around the opening. Look for cracks, tears, warping, or heavy buildup of food debris or mineral deposits that might prevent a tight seal. Clean the gasket gently with vinegar or mild soap and water. Ensure the door is closing and latching properly.

    Check Door Gasket / Seal

  2. Check Detergent Use / Oversudsing

    Are you using detergent specifically designed for automatic dishwashers? Using regular dish soap will cause massive oversudsing and leaks. Even with proper detergent, using too much can sometimes cause suds to push past seals. Try reducing the amount of detergent.

    Check Detergent Use / Oversudsing

  3. Check Dishwasher Levelness

    Ensure the dishwasher is installed level, both front-to-back and side-to-side. If it tilts too far forward, water might pool against the door seal and leak out. Check with a level on the bottom rack rails or top edge of the tub. Adjust leveling legs if necessary (power off first).

    Check Dishwasher Levelness

  4. Inspect Water Inlet Hose Connection

    Turn off power and water supply first! Check the connection point where the water supply line (often a braided hose) connects to the dishwasher's water inlet valve (usually at the front bottom, may require removing the kick plate panel). Look for drips or corrosion. Ensure the fitting is snug but not overtightened. Check the hose itself for damage.

    Inspect Water Inlet Hose Connection

  5. Inspect Drain Hose Connection

    Turn off power. Check where the drain hose connects under the sink (to the disposal or air gap) and where it connects to the dishwasher itself (if accessible). Ensure clamps are tight and the hose isn't cracked or split near the connection points.

    Inspect Drain Hose Connection

Leak Persists or Source is Internal? Time for Professional Help

If you've checked the door seal, detergent usage, leveling, and visible hose connections, and the leak continues, or if water seems to be coming from the base or internal parts of the machine, the source is likely internal (pump seal, tub crack, valve failure).
Internal leaks require diagnosis and repair by a qualified technician to prevent further water damage and ensure safety. Do not attempt complex internal repairs yourself.

Find and Fix Your Dishwasher Leak!

Protect your kitchen from water damage. Connect with experienced technicians who can locate and repair your dishwasher leak safely.

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