I don't think you'll die from that much water, but please be ware that if you are drinking a lot of extra water for no good reason, you will urinate a lot, and in so you will be losing a lot of electrolytes and minerals. I find when I drink too much water I get that dizzy feeling from lack of potassium.

IMO, just drink the basic amount of water, recommended and more as desired if you are thirstier than that.