Not really sure what one has to do with the other. Okay, great, tap water has more lead (I'm just accepting your statistic as I have no incentive to research how much lead tap water contains, and then separate that by zip-code/area-code; although D.C. has the highest I hear). No one would even think about taking these products with TAP WATER would they? Nah.
All I'm saying is that it is a compounding issue. Adding the lead from protein powder (HIGH), tap water (VERY HIGH in some areas I hear), pre-WOs (probably HIGH), and now Monsterdrol-XT (Somewhere between HIGH and VERY HIGH) on a relatively consistant basis could possibly present a significant issue, as there may not be adequate time for the body to eliminate the lead. Now again, this paragraph is entirely speculation/opinion on my part, while the information in the post you are referring was prepared with research from OSHA as well as Wikipedia and ChocolateMilk, although I know that short of doing the studies myself, I have to take the information with a grain of salt.
As far as the per deciliter issue, I honestly don't know what you're saying. Are you saying that it would not be completely soluble in blood, and as such be more heavily concentrated in one sample over another? I'm not a chemist as I stated, and I really am not trying to be confrontational (although I do have a tendency to come off as such for some reason). But I would really like to get to the bottom of this and understand it as much as possible, so please explain it to me.