The kidneys of a healthy person can process about 15 liters of water a day. The only caveat is that you can't drink it all at once! If you space your water consumption over a long enough time then it's very difficult to induce water intoxication.

If you were to drink all 5 liters in the span of an hour, say, you will start to get hyponatremia which is the dilution of salt in the body. When that happens you will start to see symptoms similar to being drunk - confusion, lack of balance, etc. If that occurs it's a serious medical condition that could result in your death.

I drink about a gallon or more of water a day and have been doing so for several years. The amount isn't as important as how long it takes you.

The kidneys of a healthy person can process about 15 liters of water a day - well beyond your current intake. The only caveat is that you can't drink it all at once! If you space your water consumption over a long enough time then it's very difficult to induce water intoxication.

If you were to drink your normal 5 liters in the span of an hour, say, you will start to get hyponatremia which is the dilution of salt in the body. When that happens you will start to see symptoms similar to being drunk - confusion, lack of balance, etc. If that occurs it's a serious medical condition that could result in your death.

I drink about a gallon or more of water a day and have been doing so for several years. The amount isn't as important as how long it takes you.