PPT Slide

Solution Equilibria: Solubility

In homes older than 1980 most of the plumbing

is lead pipe (Pb = plumbous). Even in newer

homes with copper pipe, solder joints are a

lead/tin alloy. Even without solder joints, many

of the faucet heads are machined with a 10-20%

lead content brass.

The limit on lead is set to be

ɝ g Pb/109 g water

< 5 x10--9 g Pb/g water

< 5 ppb

What to do?

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