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The top infrastructure priority in the entire United States should be to remove all lead pipes. It would cost a lot but it would have an enormous effect on health and reduce crime/violence.

It would also result in a very large number of jobs.

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Where I come from, the advice is to just leave them as a protective layer has formed on the inside of the pipes through oxidation.

Where I come from, the main problem isn't the lead pipes, it's the lead solder used on the lead pipes.

Where I come from, the solder is not much of a problem. We paid everyone a ton of money to replace their pipes, leaving only solder and fittings as lead sources, and we have very little lead in our water to speak of.

https://www.npr.org/2016/03/31/472567733/avoiding-a-future-c...

Where I come from

https://www.npr.org/2016/03/16/470512927/before-flint-lead-c...

It's a CaCO3 layer that keeps lead out of solution by raising pH.

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