2000 Toyota Sienna Water Leak

Air Conditioning problem
2000 Toyota Sienna 6 cyl Front Wheel Drive Automatic 90.000 miles

I found the AC drain house missing and I put a new one. After a month I check The floor and the carpet in the inside of the car was wet. I checked for leaks at the passenger side and no sign of water coming fron underneath the dash. But when I checked the driver side behind the brake pedal leather was all wet and foamy. I' d like to know where is all the water coming from. Thank you