About 75% of US community water supplies have added fluoride, which helps prevent tooth decay. Water fluoridation is considered a top public health achievement. Over 200 million Americans have access to fluoridated water, and it is estimated to save $1 for every $1 invested. The cost for communities with over 38 people is approximately $20,000 per person.
About three-quarters of the water that comes from community water supplies in the United States is fluoridated, meaning it has the mineral fluoride added. This mineral has been found to prevent and reduce tooth enamel decay, which leads to tooth decay. Although water naturally contains fluoride, it is at levels below what is thought to be optimal for dental health. Water fluoridation was introduced in the United States in 1945, and health experts have ranked the practice as one of the 10 greatest public health works of the 20th century.
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More than 200 million Americans live in communities where the water supply contains fluoride.
In 1945, Grand Rapids, Michigan became the first city to add fluoride to its municipal water supply.
It is estimated that every US dollar (USD) invested in water fluoridation will result in savings of approximately US$1. For communities with a population greater than 38, the estimated cost of water fluoridation is $20,000 USD per person.
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