Andrew Welser wrote: The solder normally used to join copper pipes and fittings might be more of a toxic gick issue...
There is a distinction now for solder safe for water pipes vs other uses, and more awareness about solder dangers, so even the non-pipe version is safer than it was from the lead perspective. Of course the problem becomes, what is the long term effect of the new version vs the one we knew the dangers of?
Soldering is a skill, just like every other skill. If I was planning to work on house pipes, I'd be looking for lower risk soldering projects that I could practice on. I have seen old soldering jobs with gobs of solder all over the place. I've also seen jobs where the minimum solder was used, and in particular, there were no big globs of solder on the inside where the water was going to be. The dose does make the poison.
I also recognize that there are humans who are *much* more sensitive to certain metals than other humans. Doctors have documented people whose bodies simply don't eliminate nasty metals as effectively as other people. If you are one of those unlucky ones, avoidance is *much* more critical. If anyone reading this thinks they might be one of those humans, please get yourself tested. One of my in-laws had hemochromatosis, which prevents the body from eliminating extra iron. Luckily they determined this before any damage was done and the solution was literally, taking a pint of blood off him every few months.