There are no safe levels of lead exposure and there plenty of homes with lead piping as well as lead service lines: https://www.nrdc.org/resources/lead-pipes-ar

There are no safe levels of lead exposure and there plenty of homes with lead piping as well as lead service lines: https://www.nrdc.org/resources/lead-pipes-are-widespread-and-used-every-state https://www.nrdc.org/resources/lead-pipes-are-widespread-and...