Defective water pump.
It is leaking and overheating because a part has failed.
ah.......radiator??
yes, leaking coolant is what happens before the pump totally dies, then you have overheating and possible engine damage soon after the leaking.
The overflow tank is either cracked or its overheating and leaking from the cap
the freeze plugs on the side of the motor could be done.
Blown Head Gasket or Warped Head from Overheating
If by water you mean engine coolant, yes. Loss of coolant, antifreeze, is a major cause of overheating.
It could be caused by a defective pressure cap on the radiator cooling system.
Probably a blown or leaking head gasket.
you could be leaking antifreeze and that is what is causing the high pitch noise and overheating. Check the clamps on the hoses, when it gets hot and bubbles out of that, it can create a whistle.
There is no antifreeze in a refrigerator.
How To Find & Fix Coolant Leaks http://www.aa1car.com/library/coolant_leaks.htm