I have never had it tested and the only concern I have at all is that the mat under my dish drainer/dryer eventually collects what I would guess is limestone deposits.
If I use a spray for removing limestone deposits, it seems to work well.
Probably not necessary to boil but it is no problem. I simply use an old coffee carafe, which is made of pyrex. I fill it then place in the microwave for 9 minutes. It will boil for maybe 2 minutes of that.
I then pour the hot water into a “Pure” water filter. I must have 2 dozen spare filters as I found them on clearance and bought them all. I then pour my drinking water from the carafe.
That’s cool.