I am not referring to you. I was using as an example Philadelphia and cited reports that showed high levels of lead content in schools in that City. Schools are PUBLIC and the plumbing not the responsibility of the Children that attend them.
I was also pointing out the fact that up until the 1980s lead pipes were still used to distribute water from mains to those houses and these remain the responsibility of the municipal Government in charge.I gave links to reports indicating that until those restrictions passed in the mid 1980s , Municipal Governments were still installing lead pipes.
Contrary to claims made that water mains were cast iron and only the solder at joints was of lead, what are referred to as service lines were in many cases made of lead. These are the lines that run up to the home.
So get off your "Science" kick. Science showed lead not safe which is why laws passed to limit further use my Municipalities in their water distribution systems. The failure to replace the infrastructure that still uses that lead is a failure on the part of the Governments.
Most of the infrastructure here in Canada that delivers water is newer but there still segments of older cities that used lead in the pipes. Again it up to Governments to replace.