Vapour distilled water with added electrolytes. GLACAU Smartwater is made from British spring water which is vapour-distilled before electrolytes are added. It has a distinctive, crisp, clean taste and is produced and bottled in Morpeth, Northumberland. All our Smartwater bottles are now made from 100% rPET. We don't just bottle our British spring water. Oh no. We vapour distil every drop for purity before adding electrolytes to create our distinctive, clean, crisp taste. Made from vapour-distilled British spring water and added electrolytes, GLACAU Smartwater has a distinctive, crisp, clean taste.