you can use home RO if you boil it but distilled is best. I used to work in industrial water purification and I would never use water that hasn't been boiled fi

you can use home RO if you boil it but distilled is best. I used to work in industrial water purification and I would never use water that hasn't been boiled first. edit: and yes... look at the news every now and again where you hear of some kids swimming in a lake and dying from an amoeba or something else that jumped the brain barrier.