From what I have heard the inside of old lead water pipes is usually covered in several layers of calcium carbonate, at least in areas with hard water, these layers prevent the water from getting in contact with the lead. So if you live in an old house with lead pipes you do not need to panic. New lead pipes that lack this calcium carbonate layer are what is in fact dangerous to health and therefore should not be installed anymore.
Edit: Downvotes for stating facts that do not fit the popular narrative, really? Reddit moment …