Water Table in a Habitat

> Water is a scarce resource in space. This will drive
> colonies to take advantage of all technologies
> available to make sure only the minimum amount water
> that is needed to sustain plants is administered.

Uh... This is just one more of my silly, picky corrections, but indeed water
is *very* abundant in space. Hydrogen is the most common element in the
universe, and oxygen is very abundant too, and as a result probably most of
the solid mass of the Universe is water ice. Look at the Solar System, for
instance: the combined ice of all existing comets in the Oort Cloud could be
used to form a planet ten times more massive than Earth. (According to a very
sketchy calculation that I have just done.)

However, I would agree that water is difficult to get in the Inner Solar
System (even carbonaceous asteroids will require a lot of processing for
water production, I think), and then your observation is valid for that
volume of space - the first one that we will colonize, by the way.

Lucio