1995 Eagle Talon how do I know if my water pump needs to be

I just bought a 95 eagle talon front wheel drive turbo charged and I notice after a few days that the coolant is leaking from the drivers side by all the belts. Im not sure if the water pump needs to be replaced or if its just the seal? When I drove to work today which is about a 20 minute drive it started over heating I dont want to buy a new water pump if I dont need one but how can I tell if its just the seal or the water pump?