Water in the front footwell

Water in the rear

Carpet split from backing

I press down on the plug and it oozes a bit of water

This doesn't look like standard stuff. It was wet, could this be blocking one of the drains and causing the water leak?
This car is filthy

Absolutly awful, how does this get so dirty under the center console.

It's dirty even under the carpet

I pulled the rear heating tubes out and they were full of stones

After lots of vacuuming and wire brushing
Next up, how do I get this crap out without stripping the seat??
Then strip and clean this out
The water in the front foot well was foamy which I guess was from when I washed the car. The water in the rear wasn't the same, it seemed more like rain water. I have put some water over the car with a hose but can't find the leak. Not a drop in the car. What can I do?
What can I do about the leaking plug? Can water be coming in this way?
Could the wadding in the speaker hole be causing the water leak