We have a .2 micron filter on our kitchen taps, so I do drink, cook, make ice, etc with tap water. Away from home, I drink water I bring along or bottled spring water.

I mentioned in my earlier post that I am maybe more risk-tolerant than some people, and I do not have GERD, so I don't worry a lot about about what I drink.

All that said, I do boil my nebulizer/airway clearance equipment.