Hm....this is a very interesting story about me (drinking water)...
I was sales agent for 10 years, and I travelled across the country. Need to know, that in Romania (especially on the East part of Transsylvania) it exist a volcanic mountain range, and a lot of mineral water sources. During a week, I went past atleast 100 mineral water sources (yes, natural sources, which flows out of the mountainside). Different sources, different tastes of water, and different "ingradients". Some waters was rich in magnesium, some in kalcium, and other in sulfur...some are most succinic acided, some less... At every morning I stopped at the first source, and I filled it my plastic bottle of 2 litre. When I drank it, I filled it again from an other source... Because of this (I drunked always every time from bottle, and it was measurable), I constientized that I drink more than 5 liter of water daily. Yes, it is not a joke. When I constientised this firstly, I was surprised, but I thought it was just a coinciddence...and I started to measure daily, and the results was the same...
I visited a doctor, to ask if this is OK, or not (drinking a lot of water can be a sign of diabetes). After some analisys the doctor found the cause...fortunately it was not a diabetes. The doctor said, that the succinic acid "wash out" a lot of magnesium and other minerales from human body. It was recommended to moderate my mineral water consum. Is added to this, that I don't consume salt, and there is nothing to bind the water in my body. After this, I started to consume a little bit of salt regulary, and to reduce the mineral water consumation (but I drink normal water instead). My daily water consumation is around 4 litre dayli right now :)