For formula fed babies do any mommys just use purified water and warm or do you all boil the purified water

I just used the baby water but I never boiled it

I boil a couple of gallons and keep them in empty Arizona tea bottles in the fridge. Then when I make formula I make enough for the day in a shaker bottle then I pour in to the baby bottles and warm as I need it.

You're suppose to boil the water first until their. Or you can use water bottles