You will find that distilled or reverse osmosis water is acidic. Buy a bottle and test it to see. On a pH test strip it showed up as very yellow (green neutral, blue alkaline). Tap water showed up us blue and my filtered water also showed up as a blue/green
The yellow one was probably from absorbing the carbon dioxide in the air.
Regular tap water is considered 'positive' It has so much crap in it it leaves deposits behind (like the scum and calcium deposits). Distilled and R.O water is 'negative' meaning it will try and take in whats in its surroundings. Water is an exellent solvent.
To me that kind of water is lifeless and does not represent health. It has zero oxygen and no nutrients of any kind. Nowhere on the planet can you find water like that. For short term use its very effective in 'detoxing' the body. But I would not recommend it for long term. I still like to have things somewhat how nature intended.
Your all welcome to your own opinions though
The water filter I use is from
http://www.wellness.com.au/