F the water supply (in other words what is Fluride levels in world water supply)

Seems a bit of a look is needed into the actual numbers.

5.4% of the people in the world have regulated water supplies for Fluride.

"Public water fluoridation was first practiced in the U.S.^[16] As of 2012, 25 countries have artificial water fluoridation to varying degrees, 11 of them have more than 50% of their population drinking fluoridated water. A further 28 countries have water that is naturally fluoridated, though in many of them the fluoride is above the recommended safe level.^[17] As of 2012 about 435 million people worldwide received water fluoridated at the recommended level (i.e., about 5.4% of the global population).^[17] About 214 million of them living in the United States.^[18] Major health organizations such as the World Health Organization and FDI World Dental Federation supported water fluoridation as safe and effective.^[19] The Centers for Disease Control and Prevention lists water fluoridation as one of the ten great public health achievements of the 20th century in the U.S.^[20] " ref Wikipedia.

So 435 million people in 2012 have F moderated drinking water.

For a local town of 12,243 people.

In a distinct of 24,000 people 50% relieve F moderated water.