An oz for each lb you weigh

8 glasses a day. Too much water is apparently bad for you:
http://www.dailymail.co.uk/health/article-2014112/Drinking-water-bad-health-Benefits-myth.html

http://chemistry.about.com/cs/5/f/blwaterintox.htm

There's a few more articles out there; just google "too much water not healthy"

I drink about 50 ounces a day, 2-3 16.9 ounce bottles but more so 3 then 2.
It keeps me going thro the day and it works for me so im sticking to that lol