Something to think about is that years back, most domestic piping was
steel. Sure, rust and scale was a real problem, but swallowing some iron is
fine.
Now all the tubing is copper, and the copper in blood is very high, so just
who is being contaminated?
The muncipalities use chlorine to treat the water, so you're drinking CuCl
every day. (if you drink tap water)


Regards
Roland


At 03:00 PM 02/03/04 +1300, you wrote:
>> What is "contamination" though, 1ppm? 20ppm?
>
>According to some toxicology reports on the web, 5ug/l of copper
>chloride is the lower limit for aquatic life. Not much is it ?
>
>IOW 180,000,000 litres per kg or 21,000,000 US gallons / lb
>
>A cube with 56.4m (181ft) sides
>
>That's why I don't tip it down the sink
>
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Regards
Roland

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