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Re: more about copper

Posted by Larry Hoover on June 4, 2003, at 11:06:59

In reply to Re: about copper, posted by Larry Hoover on June 4, 2003, at 10:25:16

> So, I go and take a look at drinking water vis a vis copper plumbing, and I come across references to drinking water found to contain e.g. 8 grams/litre of copper. I didn't follow up to see how common/uncommon that concentration might be, but if you've got copper plumbing where you live, and you drink the water that's been standing in your copper pipes for hours on end, I don't think you need to worry about copper deficiency! At 8 grams/litre you'd meet the total daily intake from half a cup of water (4 oz.).
>
> So, I hereby retract my earlier comment that you might need a zinc holiday to ensure adequate copper intake. I don't think it's an issue. If anything, I'm a little concerned about excessive intake.
>
> Lar

Here's what I needed..... The modal (most commonly found) copper concentration in cold water (what about hot?) standing in copper plumbing for six hours, is 2 mg/litre. It could be much higher than that, in your home. The taste threshold is about 6 gr/litre. If your water tastes "stale" unless you run the tap, this might be why.

Here's a nice graph of copper levels in drinking water:

http://books.nap.edu/books/0309069394/html/139.html#pagetop

Lar

P.S. I'm throwing my copper supps out (I don't use them, anyway).

 

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poster:Larry Hoover thread:230511
URL: http://www.dr-bob.org/babble/20030604/msgs/231357.html