The second season was released 8 months ago and confirmed over 2 years ago. You may slightly misremember something here.

It is and you shouldn’t drink it. At least not a lot of it or for a long time, otherwise your electrolytes could get to low. And while I don’t remember the specifics(biology class was like 15 years ago), I think that can make the osmosis between your cells and your blood not work anymore or even reverse.