I'm pretty sure this is normal, hopeing really

Last few days i've noticed small puddles of water under my car, underneath the center of the dash area. I searched on the forum here and im 99% sure its just water from the aircon, which I believe is normal. But today, I put the aircon on and then looked underneath and noticed a tube and litterally a stream of water came out, bit like a cold water dispenser

It only lasted 2-3 seconds but it didn't seem right. Could it be just flushing out what water has melted? condensed etc from the day before? Is my mini releaving itself?
Does anyone else have this tube? You can see it more or less in line with the centre dash underneath.
Thanks