I really want to try this, but can't get distilled water (I've tried about 7 different chemists and garages, all of which tried to tell me de-ironized or purified water was the same as distilled - which I gather is a big lie!

I already use a water filter at home. If I can't get distilled, might that be ok?
Sorry if this has already been asked, I've only got through the first 60 pages so far, though I do intend to read the whole thread - gradually!