I have a potential contamination problem I need advice on. I posted the situation over on Terry Love's DIY Plumbing Forum:

http://www.terrylove.com/forums/showthread.php?t=15687

I'm trying to learn as much as I can about whether or not flux paste left in the pipes after rough-in on a house being built, represents a health hazard if it is still coming out two years after house completed (oily substance on surface of water in clean basin of hot water). Long version is in the linked post above.