the water from you FW tank? I've read where some people don't and i don't understand why not. If you have sanitized your system what is there to be afraid of??
We brush teeth and wash dishes with water from the tank, but use bottled water to drink and make coffee. Gallon jugs of drinking water are under $.90 in my area and typically we go through a gallon every other day, so this is not a big expense and we have room for eight jugs...