Daily ingestion of optimal amounts of fluoride has been shown to significantly reduce the incidence of tooth decay in children. Fluoridated drinking water is the most effective and efficient primary source of fluoride. Children who do not drink sufficient fluoridated water should receive supplemental fluoride in the form of drops and tablets. Fluoride supplements beginning with the newborn infant at two weeks of age should be prescribed in accordance with the dosage schedules of the American Academy of Pediatrics and the American Dental Association. Fluoride levels of the drinking water source must be determined before prescribing a fluoride supplement. The Arkansas Department of Health offers dentists and physicians a program to analyze the fluoride content of private well or spring water. The program operates through local County Health Departments. Information about the fluoride level in the drinking water of a CWS is available by contacting either that particular CWS or the Engineer Division, Arkansas Department of Health. Questions about fluoride supplementation and/or optimally fluoridated CWS's should be directed to Dr. Wharton A. Nichols, Office of Dental Health, Arkansas Department of Health, 4815 West Markham, Little Rock, AR 72205, (501) 661-2483.