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How Do I Find Out How Much Fluoride is in My Water?

If you receive your tap water from a public water system, you can find out the water's fluoride content by calling your local government office. Request the phone number of the water plant and call the water plant to ask about the fluoride content of the water.

Or, visit your community's government website and look under the section on "Utilities". Often the phone number of the water plant will be listed. 

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. Find out how to have your water tested for the fluoride content.

Currently, the optimum recommended level of fluoride in drinking water in Ohio to prevent tooth decay is 1.0 part per million (ppm) or 1.0 mg/L. Fluoride is naturally found in almost all water, and there are many communities in Ohio that naturally have enough fluoride in the water to protect teeth from tooth decay. Many other communities adjust the amount of fluoride in the water to provide this protection. 

Overall, more than nine out of 10 people living in Ohio who are served by public water systems have fluoridated water. This is almost 11 million people.


Page Updated: 02/26/2018