[TheNewGirl]

Well your kidneys can handle about 1 liter an hour if they're healthy (if your body is under stress of any kind though it will be much less). But that's total liquid intake including liquids from food and other beverages.

If you exceed that (unless you're sweating heavily or in a very hot environment, there for getting rid of liquids via other means) you're at risk of hyperhydrosis. If you exceed it by a lot you can give yourself a stroke. (There used to be a hydrophelic ward at Riverview when I worked there, with people who deliberately downed huge doses of water to get a high. Don't to it. You can kill yourself or damage your brain since that's exactly where the "high" comes from, it shifts the electrolyte balance in your body and starts sending miss fires in the neurons in your brain. It was the oddest thing I'd ever seen but really gave me an appreciation for how important the balance between H2O and Electrolytes in your body is).

This is all also a risk if you don't get enough salt and electrolytes with your liquids in any quantity (so water is great, but you do need some salts and sugars with it if you're taking in a lot at a time).