• Holden Caulfield

    Somebody with more chemistry can jump in any time, but molecular lead is not the same as lead in a compound/alloy such as brass. The lead in solder that was used in plumbing did not actually fuse with the copper pipe; it melted around the copper pipe and was still in it’s original elemental form. Therefore, where there was a negative ion capable of disassociating the lead ion from the molecular lead, the lead then became free and in solution with the water.

    When lead bonds with some other metal, such as copper (which is how brass is made) that lead ion is permanently bonded to the copper ion in the metal and cannot disocciate back into the water stream.

    That’s my understanding; perhaps someone with more education can explain it more clearly.

    The brass in your faucet, in other words, is not affected by your water to the degree that it was free to enter your water from sources like solder.

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