If you receive your tap water from a local water utility, you can find out its fluoride content. Use the table below to locate your county. Click on the county name to view information on the community water systems in that county. The number of persons served and the fluoride content of each system are provided. The optimal level of fluoride in drinking water in Ohio to prevent tooth decay is 1.0 part per million (ppm) or 1.0 mg/L.
If you receive your tap water from a private well, a laboratory will need to analyze a sample of your water to determine the fluoride content.
