After a substantial rain the floorboard behind the drivers seat has a good amount of water standing.
This is with the car stationary ..the car not moved.
I have tried to replicate by taking the car to a car wash and spraying all over hoping to find where the water is coming in from .. no luck
I have no idea where the water is coming from. Everything inside looks bone dry.
I read a couple of posts before that it may be the drain holes on the sunroof being plugged up .. not sure how that can be.
Any suggestions ???

 

Yes. Check the drainholes in the sunroof. Notorious for clogging- dust, dirt, leaf litter, etc. Be careful if cleaning them yourself. Use shop vacuum. DO NOT PUT ANYTHING IN THEM. Use only air pressure to remove clog.