Hi Sarah Jane:
Well, to determine if it is the pump or a hose, you will need to get under the vehicle. Try to dry the underside off so you can get a better look at where it may be coming from. Next, locate the waterpump. The under side of the pump has a weap hole that will leak if the bearing / seal is bad. Check there for stains / coolant.
If it is dry, then you will need to continue your search. Check coolant lines and the radiator.
Let me know if it's the pump. I'll try to get you the directions.
Joe