Really important about drinking water!!?

well here it goes I love to drink alot of water well who doesn't but i chug it really fast because i'm hot or really thirsty i can chug like 3 or 4 gles in a short amount of time sometimes at once and i know you are supposed to drink 8 gles a day but i feel as though i drink way to much at one time like today i chuged 2 soda pops (cans)but before that today i drank like 3 water bottles and i just put 2 more in the frige right now to get cold i'm kinda scared because i hear and read online that drinking too much water can actually kill u what should i do plus it's hot so it does'nt help