Wisconsin Oral Health Program:
The Wisconsin Public Water Supply Fluoridation Census
The Wisconsin Public Water Supply Fluoridation Census provides information on the fluoride status of public water systems. This document is designed to assist local public health departments as well as medical and dental professionals to determine the level of fluoride of a public water supply to assess risk for oral disease prior to prescribing fluoride supplements. This census is conducted by the Division of Public Health, Department of Health Services, in collaboration with the Department of Natural Resources. Information is obtained from the Centers for Disease Control and Prevention’s Water Fluoridation Reporting System (WFRS) and the Department of Natural Resource’s community water system pumpage reports. A public water supply is a public water system that serves at least 15 service connections used by year-round residents or that regularly serves at least 25 year-round residents.
The benefits of fluoridation are summarized below:
Systems listed as “Adjusted” ensure the amount of fluoride in the water is at the level recommended for optimal oral health benefits. The optimal level for fluoridated systems in Wisconsin is 0.7 part per million (ppm) of fluoride.
Systems listed as “Natural” have a natural fluoride content at or above 0.6 ppm. Contact the public water supply for information on the exact content of fluoride in the “Natural” systems.
Systems listed as “Non-Adjusted” do not have adequate fluoride in the water to protect adults or children from tooth decay. Contact the public water supply for information on the exact content of the fluoride in the “Non-Adjusted” systems.
Approximately 90 percent of the population in Wisconsin on public water supplies has access to the benefits of optimal levels of fluoride. Children drinking water from systems with less than 0.6 ppm fluoride may need to take dietary fluoride supplements. More information regarding dietary fluoride supplements can be found on the Fluoride Supplementation fact sheet P-44531 (PDF, 112 KB) available from the Division of Public Health.
Wisconsin Public Water Supply Fluoridation Census – 2013, P-00103 (PDF, 38 KB)
Fluoride Supplementation P-44531 (PDF, 111 KB)
Last Revised: January 28, 2014