Fluid on driver's side mat

Hi everyone,

I've seen posts about fluid showing up on the passenger side floor mat. However, I have been experiencing fluid (assuming water) showing up on my driver's side floor mat for a couple weeks. I've attached a picture of where the fluid seems to be originating from (I had wiped up most of the fluid when the picture was taken). The fluid appears to be coming from underneath the plastic and onto my floormat. If I had to estimate how much fluid shows up on the floormat, I would say a good 5-6 tablespoons.

Any ideas? Thank you