Just went through this with my daughters car. Floor was wet, started on the passenger side, then wicked over to the drivers side. Nipple broke off of the resevoir to the hose which funnels the air conditioning condensation out side, hence the water staying in the car.
Solution: Tried glueing it back on, didn't work well at all, still dripped a little.
Next I took a 3/8 mib x 1/2" plastic nipple fitting, threaded the hole (I know, it's thin plastic on the bottom of the reservoir), also cut off all but 3 threads on the threaded end of the new fitting, and used plumbers glue both on the new threads and the new fitting. Screwed it in, let it sit a day.
Worked like a charm, hasn't leaked again, saved the $108 for the new pan, and the $800 Honda wanted to change it out.