Are you one of those people who every night before going to bed, put a glass of water on the nightstand in case you wake up in the middle of the night feeling thirsty? Have you ever noticed that the water does not have the same taste in the morning?
Well, there is a good explanation why nightstand water changes its taste and texture. Water exposed to air for a longer time absorbs carbon dioxide, which later transforms into carbonic acid on small parts. Carbonic acid converts into carbonate or bicarbonate when it releases one or two protons, which in turn changes the water pH and affects its taste. That’s how water changes its chemical structure and has a strange taste. It means there is only dust and airborne bacteria left in.
Drinking nightstand water isn’t harmful to your health, but it’s always the best choice to drink fresh water every time. Next time when you wake up thirsty in the middle of the night, go to the kitchen and drink water instead of drink a water full with dust and bacteria.