Hose under carpet in passenger footwell

Where does the hose (that's under the passenger's side carpet) come from/go? 1999, 4.0L, with A/C. I've read the threads related to water in the passenger's footwell, but none seem to describe this particular hose. I know about the short hose that empties into the lower engine compartment (just above the starter), but this isn't it. It goes behind the trim in front of the fuse panel and joins a wire bundle that runs under the lower door trim. I didn't follow it past that. I also can't find it mentioned in the 2000 FSM, but maybe I used incorrect search terms. Could it be a breather hose?

rear hatch washer fluid perhaps?

I think that's on the driver's side.

Its the washer fluid for the rear wiper. I found there was enough slack in mine to relocate it. I tied it up under the dash and from there it hides under the door trim.

Really?! When I wrote earlier that I thought it's on the driver's side, I wasn't sure (that's why I wrote "I think"), but it seems totally illogical to have it go across the the firewall to the back. Well, gotta love Jeeps, I guess. Now to find the source of the water in the footwell. Thanks, guys.

Just an update: it's definitely the hose for the rear wiper. I turned it on and held the hose. I could feel the fluid pumping through it. Thanks again, guys (sorry I doubted you, 87Manche).