Did you even know that there is lithium in most of our drinking water? And it might be protective of the brain?

I did not know either of those things. 

It's like adding flouride to our drinking water to help protect tooth enamel.

The pineal gland is supposed to be the source of the Third Eye function, and excess fluoridation causes it to shrink and diminish in power. So, adding fluoride to the water may reduce your ability to meditate. http://en.wikipedia.org/wiki/Third_eye  - Dont know about Lithium

Well, here's more about lithium in water:

http://theblaze.com/stories/2014/09/15/theres-a-mood-altering-drug-in-the-water-supply-and-you-probably-didnt-even-know-it/