You expect to find your food nice and cold when you open your refrigerator door, not sitting in a pool of water. It can happen if something has gone wrong inside the refrigerator, and you may even notice water pooling on the kitchen floor. It's enough to turn a good day bad. Luckily, the causes of water in the refrigerator are usually easy to diagnose and repair.
Clogged Defrost Drain
The most common cause of water pooling inside the refrigerator is a clogged defrost drain. When frost builds up on the freezer's cooling coil, a timed heater turns on and melts it. The melt water drains into a hole in the freezer floor and runs down a tube to a catch pan under the unit, where heat evaporates it. If ice or a food particle has blocked the drain, water will flow elsewhere and drip into the compartment below. If this is the problem, clear the drain to solve it. You can open the freezer, and remove perishable items to an ice chest and manually defrost the freezer to clear a frozen drain or you can physically remove any debris. You also can try using hot water to melt the ice away. Just make sure you place a bowl in the refrigerator to catch the runoff.
If the water pool inside the refrigerator is minor, it may merely condensation from the walls of the compartment that has run down to the bottom of the unit. Minor though the problem is, it's not normal. It's generally caused by excess heat and moisture in the refrigerator. The most frequent reason this happens is faulty or worn door gaskets that let outside air into the refrigerator. If your door gasket is dirty or torn, this is likely your problem.
If your refrigerator has a built-in water dispenser in the door, a leak in the dispenser system could be the cause of the water pool. This may be difficult to diagnose and repair without the help of a professional repairman, because the water tubes generally are inside the walls of the refrigerator. But any leak in the tubes, fittings or other connections within the system could potentially flood your refrigerator with cold water.
Icemaker Fill Tube
Your icemaker produces cubes using water it receives from a fill tube. If the fill tube was installed improperly or has been knocked out of place, it could be spraying the water outside the ice moulds, or the pressure could be too high, making the water in the cubes splash over the sides. Make sure the fill tube is aligned properly and the water pressure is correctly adjusted.