Hey guys, there is a frightening amount of water accumulating in my boot floor (and is beginning to rust it) and I can't figure out where the hell it's coming from. The boot carpet isn't wet anywhere so it can't be coming from above, so it must be leaking from just below? Both sides are wet, including the sloping parts and under the 2 compartments where you store your tools (wheel brace etc) if you get me

I've checked obvious channel for blockage with leaves etc, nothing obvious.
Sound familiar with anyone? I'm worried now as not too long ago the back bumper was off to be resprayed...
One of my lights also has condensation in it all the time and is growing some green mold inside...
Would appreciate any advice!!