Since I started with purified water in June 2014, when I started treating, I have gotten to where even spring water tastes too salty or something, for me, so we keep purified water in the house. You can get it
in bottles at Wal*Mart, etc., or
in gallon jugs at
the grocery story, or anywhere gallons of water are sold.
I prefer it at room temperature, but you can keep it in the fridge or put over ice.