Originally Posted by
tdracer
and some houses actually had lead pipes
Have lead pipes.
Oct 2022
"
$100M headed to Detroit to replace lead service lines over next three years
...
replacement of its estimated 80,000 lead services lines in the city"
Might also be still working on it in Flint.
September 30, 2022
"
final phase of lead service line replacement targeting roughly 1,600 remaining water service lines."
My understanding is that in Flint the lead was more or less captive in the pipes until they changed the water source in 2014. The new water source had different chemistry. It's complicated - https://en.wikipedia.org/wiki/Flint_water_crisis
Likely many others round the world. Some old buildings in UK (pre-1970) will still have them.