We still use lead pipes to this day. It’s not a major problem unless you do some dumbass shit like in Flint Michigan. They had and used lead pipes for like 50 years and they treated the water so it didn’t corrode the pipes, and created some protective layer.

Then they switched water sources to save money besides being told not to, and the water was naturally corrosive and dissolved the protective layer and their water was fucked by lead.