For the candida diet that is correct (no water will affect the candida), but in general, I will only drink distilled or bottled where I trust the source.
Knowing how many times tap water gets recycled from sewage water, and how many supposed "bottle water" companies use filtered tap water, I only trust distilled or something like Fiji brand.
I bought this home water distiller off of Amazon a year ago, and it works brilliantly. I found it on eBay for about $115 total.