What Is CWF and Which Massachusetts Communities Are Fluoridated?
Community water fluoridation (CWF) is the adjustment of sub-optimally fluoridated water levels up to the levels recommended for optimal dental health. The United States Public Health Service determined the optimal fluoride concentration levels range from 0.7 - 1.2 ppm.
One milligram per liter (mg/L) of fluoride in water equals one part per million (ppm). One ppm of fluoride is diluted in a million parts of water. The following comparisons give an idea of the amount of one part per million: 1 inch in 16 miles; 1 minute on 2 years; 1 cent in $10,000.
At this range, dental decay is effectively reduced while minimizing the risks of dental fluorosis. The optimal level for a location depends on the annual average maximum daily air temperature of the geographic area.
There are three types of additive options approved by the American Water Works Association and NSF International: sodium fluoride, sodium fluorosilicate, and fluorosilic acid. The benefits of community water fluoridation are the same regardless of the source.