One of the interesting things about water running through 'undisturbed' lead pipe is that mineral deposits build up on the inside of the pipe, which means not as much lead will leach through into the water. Hot water will allow more lead leaching and acidic water certainly creates problems with the lead too.
The problem with lead in Flint Michigan had more to do with the water source. As I understand it, the city changed where their water supply came from and didn't fully test it first.
I just mentioned that to Meyer about hot water and lead in pipes. Most of the problem in ghetto housing was paint chips. Lead poisoning really works on the brain.
Flint was sending lead contaminated water out to everybody.
We have one of the best wells ever! It’s 300 feet deep and goes through rock. The person that tested it said that it was the best water she had ever tested. Still, it has to go from the well to the house. It’s the house end I worry about.
We have had it worked on a few times (pump replacement, tank replacement, etc) and the well person never said anything about the pipes being old or dangerous. He did always put a quart of bleach in the well when he was finished though for microbes.
The PUR filter filters lead and other heavy metals.