Yes, a water inlet valve can definitely leak, both externally and internally. External leaks occur when cracks develop in the plastic or brass valve body, or when rubber hose washers and threaded fittings degrade, allowing water to escape onto the floor. Internal leaks happen when hard water mineral scale or worn-out internal rubber seals prevent the electromechanical plunger from closing fully, causing pressurized water to continuously seep through the closed valve and flood the appliance tub. Always shut off water supplies before servicing leaking fittings. You can verify that a valve leak is resolved by checking that no water escapes during pressurized idle periods.
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