In areas where fluoride does occur naturally, it was found that children had less cavities. This is how scientists came to realize what fluoride does, and encouraged that it be added to drinking water in areas where fluoride does not occur naturally. Approximately ten inches of snow equals one inch of water. It could easily cost between 500 and 2000 gallons of water to- produce a typical American meal. On average, it takes about 1,630,000 gallons of water to feed one American for a year.
Chlorine is used to disinfect water.
Since the adoption of chlorine in our drinking water, diseases such as typhoid and cholera have all but disappeared. The disinfection of water has saved more lives than all the doctors and hospitals in the world.