Why does pure spring water bottles have a nutritions facts chart?!

Why does pure spring water bottles have a nutritions facts chart?

I looked at my bottled water today and on it was a nutritions facts chart on it. And for everything ti had a 0. Why do these people even bother putting on the 0s! I mean everyone knows that water is pure and has nothing in it! The water was pure spring water. It's not on of those vitamin water things and those fruit2os. It has nothing added. It's just plain water.

perhaps the food and drug administration requires all food and beverages to have nutrition fact labels. sometimes there are strange/silly laws/rules.

water is not pure. water has various metals/elements in it ie - calcium, sulfur, etc. some cities add fluroide to their water. granted that is usually more the case with tap water. when looking on the interent for information for you, i found an interesting msnbc article that bottled water can be filtered municipal water/ tap water (1). even "natural" water is not pure of other minerals and elements it just has not been treated (1). even in mineral water the minerals are not added they are naturally in the water (1). the minerals found naturally in all water except distilled water are said to be good for you, so your body actually does not want pure water (1, 2).

you are probably drinking from a plastic bottle which allows chemicals from the plastic to get into the water (that is why it is recommended to use glass cups. when i looked for a source to support what i was saying, the one i found said polyethylene bottles are ok but not plastic pvc containers. (2)