I'm talking about mountainous springs. Distilled water is obviously preferred.
Do your research on distilled water. And I mean do your research; do not simply accept the first couple of search results on Google. Remember, your brain is the most powerful tool you have in this fight. Do not let the enemy cloud it. Clean, fluoride-free water is, by conventional standards, a human right.
Distilled water follows nature's principle in that it works just like the weather cycle. Water is condensed into clouds, and clouds rain distilled water down onto the Earth. Read about it, do NOT take my word for it. Take everything with a pinch of salt.