The single most common cause of a residential refrigerator leaking water is a clogged or frozen defrost drain line choked with food debris, slime, or solid ice. During automated defrost cycles, melted water from the internal evaporator coils is supposed to flow down through the interior drain hole into the bottom evaporation pan; however, when organic debris or ice blocks this opening, the water backs up, overflows the internal drain trough, and pools inside the fresh food compartment or spills out onto the kitchen floor. You can troubleshoot leak sources easily by examining puddle locations. You can verify that the most common cause is addressed when clearing the blocked defrost drain line with warm water and a pipe cleaner stops all water leakage permanently.
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