Laura says: "I came across this post where this teacher compares the disappearance of public drinking fountains and the rise of bottled water to the rise in popularity of charter schools."
Public water fountains are not dangerous (unless cooties are real). Tap water is safe, and the spigots are designed to prevent contamination.
The rise of bottled water here in the States shows how a public institution can be demonized and replaced by a much more expensive privatized solution.
Charter schools are like bottled water–they're believed to be superior, and their standards are less stringent that their more public counterparts. (Yes, I know that charter schools are part of the public school systems, but they are not public in the sense that they equally accept all students. This difference matters.)