Here are seven statistics on water fluoridation for 2018, the most recent year data is available:
- Total number of people on fluoridated drinking water systems: 207,426,536
- Number of Community Water Systems (CWS) providing fluoridated water: 17,917
- Number of people on CWS: 284,075,868
- Percentage of U.S. population on CWS receiving fluoridated water: 73 percent
- Percentage of U.S. population receiving fluoridated water: 63.4 percent
- Number of CWS adjusting fluoride: 5,753
- Number of CWS with naturally occurring fluoride at or above optimal levels: 5,727
