I live in Rockland County, NY. It is a fairly metropolitan place, just north of New York City. There are lots of people here. And a giant mall. And a nuclear power plant (or is that across the river in Westchester County? I can never remember).
We found out that they don’t fluoridate the water here. Doesn’t that seem odd? So, my kids have to continue taking those kelpy looking fluoride drops. Thank goodness the kids like them.