pure water is natural, as is water with stuff dissolved in it. But
there is a limit to what can be dissolved, and to how much.

pure water, pH 7, is so very very poorly dissociated, about 0.0000001
M H+, however its a polar molecule with a distribution of charge
(weakly neg at Oxygen, weakly pos at Hydrogen)

It does not necessarily bond with whatever it comes in contact with.
And you really have to define what you mean by bond.

alistair

On 24-Sep-10, at 10:31 AM, Michael wrote:

Show me water without anything else dissolved in it.  That's not
natural.
Also extremely hard to do.  Distilled water is close enough for
everyday use but not really pure.

Well, remembering my chemistry, water in it's natural state is
ionized.   So it's able to bond with whatever it comes in contact with.

Having said that,

Water is called the "universal solvent" because it dissolves more
substances than any other liquid. This means that wherever water
goes, either through the ground or through our bodies, it takes along
valuable chemicals, minerals, and nutrients.
from:  http://ga.water.usgs.gov/edu/waterproperties.html

Or do you not accept the US Geological Survey as sufficiently reliable?