I have a ford explorer and it is leaking water out

if its leaking clear water on to the ground toward the back of your engine its probably just condensation from your air conditioner, if its coolant like water mixed with antifreeze then it could be a number of thingssuch as freeze plug, water pump, heater hose going into the fire wall, keep up with your radiator fluid level and if you have to keep adding coolant then you know you have a bigger problem than just condensation. condensation from your vehicle is normal