[Tofuboy]

The condensation is coming from your AC evaporator, it's usually located under the passenger side dash inside a black plastic housing. There is a drain tube from that housing that directs the condensation through the firewall and out underneath the car. Most likely that tube is clog with dirts and such and cause the housing overflow and start dripping inside of your car.

Try uncloging that tube then the water will start draining out but you will most likely go under your car do to that. Don't try to open the plastic housing cause you will get your carpet all wet and possiblly break it since it's bolt down to the fire wall and you can't take it apart unless you remove your evaporator.