Originally Posted by davecalk
Lets not hijack the threat with needless concerns.
I'm sorry -- I originally read the concern about pipe dope as a contamination concern. Now that I reread it, I think I read into it more than was originally intended. I didn't intend to add crazy irrelevant talk; I actually thought that was the issue at hand, and took your comment about use on potable water systems in that context.
I come from the aquarium hobby, where the (fallacious) argument "if it is safe for people to consume, it is therefore safe to use in an aquarium" is quite common, and so I'm overly sensitized to it.