I use purified water. After 8 months, we just used filtered water from the fridge. I believe if the baby is premature water needs to be boiled.
Distilled or purified
Cooled boiled water
We use purified water.
I used bottled water but I had the tomme tippe machine which has a filter as well
Were doing formula from birth and once we switch to powder we're doing cooled boiled water (gotta save money somehow lol)
Distilled is what I heard
I use boiling water that has cooled. I know it’s sterile and safe.
In the UK its boiled tap water
I think it's distilled water