why is my suv leaking water on the left side floor board it a Mitsubishi endeavor 2004
If it has a sunroof, look for drains that are clogged. If no sunroof, look for a failed windshield seal, especially if it wet in the drivers side floor. A windshield replacement company can seal that right up for you.
When you use air conditioning, water condensates from the evaporator in the duct work. There is a drain that is supposed to drain water out. Drain could be plugged.