The 3 most common part(s) or condition(s) which cause the symptom Refrigerator leaking water are listed below starting with the most likely. Check or test each item and watch any available videos.
If the refrigerator is leaking water it's possible that the refrigerator has a clogged or freezing defrost drain. If the defrost drain freezes the defrost water will overflow the drain and drip down to the bottom of the compartment, If enough water accumulates in the bottom it can run out onto the floor. Thaw any ice that is clogging the drain. Make sure the drain is clear by flushing it with a turkey baster and HOT water.
RepairClinic Item # 1217
If the refrigerator is leaking water the water tank assembly may have sprung a leak. Check the water tank assembly while it's still in the refrigerator to see if the leak can be found. Keep in mind that the tank is not under pressure, it only holds water at a very low pressure and so the leak might be very small and hard to find. The tank can sometimes be made up of coiled tubing and is usually located behind the crisper drawers, behind a panel in the refrigerator section. If a leak is discovered, replace it. The plastic they use for the tank doesn't accept glue very well.
RepairClinic Item # 1032629
If the refrigerator is leaking water the water valve may be cracked or have a loose fitting. The water inlet valve requires a minimum of 20 psi to shut off properly. If the water inlet valve does not shut off properly and the water pressure is good, replace the water inlet valve.