Fluoride in Drinking Water

What is Water Fluoridation?

Fluoride is a naturally occurring element found in all fresh and salt water. Water fluoridation is the process of adjusting the fluoride level in drinking water to the optimal range recommended for the prevention of tooth decay.

Water Fluoridation in Lake County

Fluoridation of public water supplies in Illinois is monitored by the Illinois Department of Public Health and regulated by the Illinois Environmental Protection Agency. Lake County Public Works customers can find the concentration of fluoride in their drinking water by viewing the current Water Quality Reports.

More Information

For other questions about drinking water in Illinois contact the Illinois Environmental Protection Agency, Bureau of Water, at 217-785-0561.
Glass of Water