First you have to find where the water is coming in. Have a friend use a water hose around the windshield, cowling, etc. while you check inside for leaks. Water could be coming through the firewall around gaskets as well. Be careful to not soak any electrical components if squirting water under the hood. After finding the leak then you can decide the best course of action to stop it.
your ac might be clogged or your draining hose is clogged. its in that area
The most likely culprit is the heater core.. its usually located under the dash on the passenger side.. if it starts leaking you will have water on the passenger side floorboard.. also the radiator fluid will be low.. Another possibility is the drain from the ac is clogged... alowing condenced water from the ac process to dump in the passenger side floorboard.. the heater core and the ac drain are located in the same area...
you will have coolant in your passenger front floorboard and when you turn your heater on your windshield will fog up
I would check my passenger door seal, the windshield seal, and also the drainage for the grills in the area in front of the windshield.
Under the front passenger seat.Under the front passenger seat.
Front passenger sideFront passenger side
Check under the front passenger seat.Check under the front passenger seat.
Front passenger side of the motor.Front passenger side of the motor.
Front passenger side
Under the front passenger seat
Its under the front passenger seat
Front cylinder, passenger side.