2003 Saturn ls200

You would have to pull the carpet back and run the A/C to determine that. Dry everything in the area off and watch for the leak. That will give you an idea where to look for the drain pass through on the other side also.

Just to add to this one if its clear water not coolant its your a/c drain that is clogged on the fire wall middle of it about half way down cant miss it has a rubber elbow facing down its bolted in place take the bolt out and remove the drain to clean it. When you remove the drain you will know it was clogged because a lot of water will come pouring out.

Just to be clear the drain is on the firewall on the side inside the engine compartment where you see the heater core hoses going into the car that is the fire wall.