Water Line or Valve

• If the water leaking from your refrigerator appears to be streaming from the back of the unit, then it is likely a problem with the water valve that sends water to the ice maker or the automatic water dispenser in the door if applicable. The line could be ruptured, allowing the water to trickle out and drip to the floor, or the valve that opens and closes to allow the water in when needed could be cracked or otherwise malfunctioning. Replacement of the line or the valve will be necessary to fix the problem.
  
  

Condensation Drain Clog

• If you have a refrigerator with a self-defrosting or "frost-free" freezer, then a heater is used to melt frost off the cooling coils in regular intervals inside the freezer. When this melted frost drips down, it enters a drain and flows to a line that directs the water to a catch pan -- usually below the unit -- where it evaporates. But if ice, a food particle or any other object blocks the drain or line, it can lead to an overflow. Instead of trickling harmlessly down the drain line, the water backs up and drips into the fresh-food compartment below. The vegetable drawers at the bottom of a freezer-on-top model often catch the water. Using an auger, hot water or another method, the drain must be cleared to restore proper function and stop the leak.
  
  

Overfilling the Ice Maker

• Sometimes the leak is the result of overfilling of the automatic ice maker cube molds. When working properly, water flows into the molds and freezes, and then the cubes are dumped into a tray. But sometimes a misdirected spout, sediment in the line or in the cube molds, or other malfunctions could lead to the water overflowing the molds and dripping into the refrigerator. The result would be similar to the leak that happens when the condensation drain clogs.
  
  

Condensation

• Condensation can be the source of what appears to be internal water leaks. While this is not a true leak, it has the same result. Items in the refrigerator get wet. Excessive moisture can lead to condensation inside the fresh-food compartment when the gasket around the door lets in outside air and prevents proper cooling. Check your door's seal to make sure it is closing properly.
  
  

Cold Water Storage

• The cold-water reservoir is located in the back of the fresh-food compartment in many side-by-side refrigerator models with a water dispenser in the door. The water fills this plastic line and allows the water to chill inside the refrigerator, so it will be cold when it goes into the glass. If this line becomes damaged in some way, it can mean a serious leak inside the refrigerator, often causing water to flow out through the door and onto the floor as well.