Iron replaced lead in water pipes.
lead
the pipes were old, rotten and corroded and should have been replaced years ago!
The lead will leach into the water and give you lead poisoning.
Lead abatement refers to the treatment and/or removal of building materials containing ingestible lead which were commonly used until the mid-1970s when they were banned in the United States. Most commonly these include lead water pipes and lead-based paint. Typically, lead water pipes are replaced and lead-based paint is sealed and painted over.
I can't think you are talking drinking water pipes because anitfreeze is poisonous. Nor should you have lead pipes or lead solder in drinking water pipes. So either sleeve pipes or heating pipes then. Antifreeze has inhibitors designed to prevent corrosion.
The word plumber derives from the Latin word plumbum, meaning lead. Plumbing was originally done with lead pipes, although those are now considered to be obsolete, and are mostly replaced. Modern plumbing is done with copper, steel, or PVC pipes.
Lead.
lead
Copper
It does use the first letter, the first letter of its Latin name Plumba Its where word plumber comes because up to the 20th century water pipes were made from lead.
Lead free solder for potable water pipes
It can be... especially if it travels through lead pipes.