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post #10 of (permalink) Old 11-16-2012, 07:23 PM
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Join Date: Jan 2012
Location: Oakland, CA
Posts: 2,318

I get what you are saying, most storage facilities, water mains, pumps, meters, plumping, etc. are all metal of some sort or another. -I'm not arguing that at all.

I also want to acknowledge that people can get overly concerned about the effects of metal (and admittedly, I may do this as well).

Just trying to explain my thought process/concerns a bit. I think the water travelling through metal pipes is going to be somewhat stable- there are limited chemical reactions going on, so the water will hit the saturation point of whatever metal ion/compound, and then likely stay at that level. Before it's added to the tank, it's treated with a conditioner, many of which have chelating compounds that can bind/detoxify those metal ions already present in the water.

If it's in the tank, then there are constantly reactions and biological/chemical processes going on, and as those ions get bound, the water will be able to dissolve more of them if a source is present in the tank environment.

Granted, there is a good chance that as long as semi-frequent water changes are happening, this may be a non-issue.

On a side note, have you ever turned on a faucet that hasn't been used in years? Or seen a sprinkler system go off? :P that's some of the foulest stuff I've ever observed.
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