Posted by tealady on April 15, 2007, at 23:34:50
In reply to Re: How much zinc is too much re: copper deficienc, posted by Meri-Tuuli on April 15, 2007, at 15:37:45
> Actually, I do live on igneous/metamorphic rock - why does this increase the copper of the water? (I should actually know this!) Hmmm. There's a geochemical atlas of groundwater chemistry lying around the dept, I could take a peek at that. hmmm. Anyway they were doing some work on the pipes underground here - and it looked to be copper. They were pretty well insulated I have to say! I've always wondered why the water pipes don't freeze when the ground is -18C for weeks. And I guess its much harder to freeze flowing water.
>
> But anyway, yeah.I think it's more to do with not living in an area wher rock has a lot of dolomite/limestone etc.. like in England. Here the pipes get a lining of calcium which natrally stops the copper leaching into the water.
I think "hard" water causes less leaching than "soft" water.. hard water is so called as it contains lots of calcium I think?.. forget now exactlyThat's real intersting about your pipes not freazing, I always just thought they did!! .. and figured you'd just havta go out and melt some snow or sumthin... :-)
poster:tealady
thread:744252
URL: http://www.dr-bob.org/babble/alter/20070410/msgs/750171.html