If "driver side" refers to inside the passenger compartment it is the heater core (assuming water means coolant)
check your wether stripping on it make sure you windows are up all the way as well 2places to start
this web site is awsome
Yes water cause leaking
Could be as simple as a loose or bad fuel cap.
If you have a new pressurised water system there is a possibility that the added water pressure could cause a leak.
Non, replacing a water pump will not cause a hose to leak.
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Bad seal around the bottom of the wind shield maybe?
You need to identify the leak before you can fix it.
Either your windshield or driver's side window has a major leak
Where is it leaking from? Could leak from the radiator, hoses, or water pump.
that is the heater core that is leaking which is located behind the radio.
Sunroof drains are clogged.