where you would buy distilled water? ive never seen it in any shop in the UK, only in the science labs back when I was at school
Pharmacies, like Boots, often sell deionized water - not as pure as distilled water, but all the hard-water minerals will have been removed. (I used to buy it in big 5L bottles back when I had some carnivorous plants that couldn't handle tap water, and they were fine with it.)