Blown head gasket or cracked head or both are a good bet.
Yes, antifreeze can leak from a water pump gasket.
could be a bad hose, bad radiator, bad gaskets, bad Head... find out if there is antifreeze leaking, and where from. if there isn't a visible leak, check your overflow for engine oil if the overflow is black, then it's a blown head gasket, and you;r out some bucks.
The housing gasket may be bad. Replace the gasket.
Leaking from? Hose Water pump Intake gasket
If it is leaking from a bad head gasket, it is because of a bad head gasket. If it is leaking from a bad intake manifold gasket, it is because of a bad intake manifold gasket.
Blown head gasket.
Its a strong indication of a blown head gasket
Failed gasket.
That is a bad sign.. You may have a cracked head gasket.
perform a compression test to check for leaking head gasket- you may have caught this before any major damage occurs,
Usually a leaking hose into or out of the water pump (depending on its location), or the water pump gasket.
Head gasket could be bad