As large, as typical server rack.Errhile wrote: As far as I know, IRL water recycling rigs are rather large, cumbersome and power-hungry. While Loroi tech is way better, size and power consumption might still be a problem enough to make them omit such a piece of equipment from a shuttle (capital ships most certainly have these, but I guess a shuttle could be just going with an adequately sized water tank).
SpoilerShow