Water leak in driver side floor

I have water in my driver side floor. It happens after it rains, or if there's a lot of moisture built up on the car in the morning. I've replaced the windshield, cleaned out the AC evaporator hose, checked the sunroof. Also, you cannot see water coming in anywhere when you sit in the car while it's raining or at the car wash. I've pulled the carpet back and kept it folded while it rained, and when we did this, there was no water anywhere. What else could it possibly be?

Also, it is pure water, no coolant is leaking and the car does not overheat.