Rob Studdert wrote:
On 30 Oct 2005 at 3:39, keith_w wrote:
I can't speak to the presence of other contaminants like tannins and
other water colorants, but I'd suppose any plant acid like that could
not be particularly good for a human (or fish, or animal) to drink in
any quantity, either.
All of which goes to say that one needs a number of tests to determine
potability, not just visual clarity.
There are various fish, amphibians and insects that survive best in water
containing tannins and there are many creatures who require mud, man made
pollutants are another thing but I don't see it specified anywhere by I suspect
potable only really refers to human consumption AFAIK, we are a weak lot.
Rob Studdert
Yeah, I'll go along with that.
"Unfit for human consumption" is the operative phrase, I think...
keith
