Besides, in the wild they drink water out of little mud puddles or rivers and streams. Fish and other aquatic creatures have sex in rivers and streams - and this does not seem to affect T's
No seriously, tap water is all I use. The only reason I would used boiled water for misting is to prevent the calcification build up on my glass enclosures, which is just a little extra work to clean off the glass.
We really should not try to over-love our pets, this never seems to work out well. Most experienced keepers will agree, T"s can do very well in simple set-ups with simple care.
HS