I vote NO to a merge. If Ultra pure water is merged, it would follow that "steam," "clouds," "rain," "ice" and "snow" should also be merged. Each is just water. I recognize the logical conundrum and am empathetic with the urge to merge, but water is a huge topic. To add to the conundrum, there is also an arguement that "Ultrapure water" should replace "Water" as the only true definition of "Water." The arguement goes "the definition of 'Water' is really a misnomer because it is based on properties of contaminated or impure water." I vote NO to a merge